1978 GMC C25 Performance Engines

Name: Cam Bolt Lock Plate Kit
Brand: Mr. Gasket
SKU: 948G
Price: 21.49 USD
Rating: 5.0 (2 reviews)

Please Select your Vehicle to See Exact Fit Parts

Keep Your 1978 GMC C25 in Top Shape with Quality Performance Engines

Whether you’re repairing or upgrading your Performance Engine, using high-quality parts is key to keeping your 1978 GMC C25 looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Performance Engine Cylinder Head Gaskets, Performance Engine Intake Manifold Gaskets, and Performance Intake Manifolds. Whether you’re replacing a damaged part or enhancing your truck’s style and protection, you’ll find exactly what you need to get the job done right.

Top-Rated Performance Engines from Trusted Brands

Looking for a reliable Performance Engine? We’ve got you covered with options from brands you know and trust like Competition Cams, Edelbrock, and FEL-PRO Performance. For example, Competition Cams Performance Engines start at just $33.99 with an average 4.2 star rating. Edelbrock and FEL-PRO Performance offer similar pricing and quality, backed by strong customer feedback. With over 470 reviews and a solid 5 star average, you can shop with confidence knowing other GMC C25 owners approve.

Competitive Prices and Extensive Inventory

The average price for a 1978 GMC C25 Performance Engine at Advance Auto Parts is around $272.15, with a range that starts at $7.99 and goes up to $1,201.99. With 219 options in stock from 8 trusted brands, finding the right fit is easy. Popular picks like Performer EPS Intake Manifold for 1955-86 Small-Block Chevy, Ultra Seal: Harmonic Balancer Bolt/Washer Kit, and Intake Manifold Gasket for 1958-1986 Small-Block Chevy start at just $15.49 and offer a great balance of form and function.

Explore Related Parts

While you’re upgrading or replacing your Performance Engine, don’t forget to check out other key components like Performance Fuel Systems and Performance Oil Filters. At Advance Auto Parts, we’re here to help you keep your 1978 GMC C25 in peak condition, inside and out.

Looking for the perfect Performance Engine for your 1978 GMC C25? You’re in the right place. Below, you’ll find links to various types of Performance Engines that fit your vehicle. At Advance Auto Parts, we offer only the highest quality OEM and aftermarket Performance Engines, ensuring durability and a precise fit for your GMC C25. Whether you’re driving a 1978 model or another popular model year like 1975, 1976, and 1977, we’ve got you covered. Purchasing Performance Engines from Advance Auto Parts is a smart choice, giving you access to trusted brands and parts built to perform. Below, you’ll find links to various types of Performance Engines that fit your vehicle.

Essential 1978 GMC C25 Performance Engines

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$21.49

Mr. Gasket cam locking plates feature a steel retainer plate designed to secure the cam gear bolts from coming loose and backing out, preventing costly engine damage. Retainer plate fits under bolt heads allowing tabs to be bent against hex head flats creating a secure positive lock.

Product Features:

Black oxide finished steel
Includes (3) grade 5 bolts & locking plate
Fits Chevrolet Small and Big Block without OE roller cam
Tabs bend up around bolt head to secure

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$42.99

This Mr. Gasket Water Pump Bolt Set includes chrome plated grade 5 hex head fasteners and AN style washers to install the water pump on your small block Chevrolet with the short style water pump. AN washers have no exposed shoulder which offers a professional appearance. Includes one 3/8 inch-16 x 2-1/2 bolt, three 3/8 inch-16 x 1-3/4 inch bolts, and four 3/8 inch AN washers.

Product Features:

Chrome plated
Grade 5
AN washers with no exposed shoulder for a professional appearance

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$401.99

Product Features:

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$272.99

Tool Steel 10 Degree Retainer Set Of 16 For All Valves With 1.250" O.D. Springs

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$15.49

This is a high quality bolt set that is made of grade 8 steel and will meet your requirements for a quality bolt set, this set will work on original equipment, high performance street, drag or circle track applications.

Product Features:

Has A Zinc Dichromate Finish
Made Of High Quality Grade 8 Steel
Has A Tall Hex Head To Prevent Wrench Slipping Off
Extra Thick Parallel Ground Washer
Washer Provides More Accurate And Uniform Torque

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$972.99

HoleShot 3600 for GM 1965 to 1991 TH400, 425, 375 and 1968 to 1981 TH350, 375B (not 350C) APPLICATION: HoleShot 3600 for GM 1965 to 1991 TH400, 425, 375 and 1968 to 1981 TH350, 375B (not 350C) A higher than stock stall speed as delivered by the Holeshot converter will provide several advantages and benefits in vehicles with modified engines. Many modifications, particularly big cams, tend to reduce low end power and torque. The high stall converter allows the engine to launch the car at higher rpm where more torque is available. The Holeshot is generally a very good choice for the typical street machine that is looking for better launch capability and more strength. Street rods with modified engines will also benefit from a Holeshot converter. If your vehicle is equipped with a plate type nitrous system, you will need a Nitrous Holeshot!! Stall speed listings are based on engines producing 230lb. ft. of torque at 2,500 rpm. More torque at 2,500 rpm will give you more stall speed, less torque at 2,500 rpm will give you less stall speed than the stall speed ratings indicated. Furnace brazed impeller. New precision steel alloy pump drive tube. New heavy duty needle bearing between stator and impeller (not a thrust washer). Needle bearing between stator and turbine. Furnace brazed turbine. Dual pattern drive lugs on some GM Holeshots. New turbine hub. New springs and rollers in stator.

Product Features:

Furnace Brazed Impeller
Steel Alloy Pump Drive Tube
Heavy Duty Needle Bearing
Between Stator and Turbine
Furnace Brazed Turbine
Dual Pattern Drive Lugs
New Turbine Hub
New Springs/Rollers In Stator

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$65.99

Fel-Pro Performance Gaskets deliver reliable sealing under grueling racing conditions

Product Features:

Rigid core, molded silicone rubber gaskets utilize the one-piece molded rubber technology for a perfect fit, ease of installation and include compression limiters to prevent overtightening.
Not intended for use in emission controlled vehicles.

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$64.99

Springs made of highest quality spring wire. Springs precision wound to close tolerances. Non-Rotator style: Dyno tested and street proven. Great match to Edelbrock camshaft kit.

Product Features:

For Use With Cast Iron Heads
Springs Made of Highest Quality Spring Wire
Springs Precision Wound To Close Tolerances
Use with Original Equipment Heads Only

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$342.99

BIG BLOCK CHEVY HYDRAULIC CAM AND LIFTER KIT – Xtreme Energy: Street/strip, 2800+ stall, rough idle. 9.5:1+ compression.

Product Features:

Cam and lifter kit for Big Block Chevy engines
CL-Kit includes cam, lifters, assembly lube, instructions and decals
HYDRAULIC – Xtreme Energy: Street/strip, 2800+ stall, rough idle. 9.5:1+ compression.
284/296 Advertised Duration, 240/246 Duration @ .050″, .574″/.578″ Lift, 110 Lobe Separation
Valve spring upgrade required

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$480.99

Edelbrock camshafts are matched to Edelbrock Total Power Package components for proven performance, taking the guesswork out of camshaft selection. They are compatible with OEM or Edelbrock hydraulic roller tappets which reduce friction, virtually eliminate break-in problems, and permit higher valve velocities for increased performance. Designed to work with Torker II manifolds for performance from 2500 to 6500 RPM, these camshafts are ideal for high-performance street, drag or marine applications. Torker-Plus cams have a slightly rough idle and are not suitable for trucks or towing applications. Hydraulic flat tappet lifters are included with each camshaft.

Product Features:

Designed for 2500 to 6500 Performance
Designed for Hi-Perf Street; Drag or Marine Use
Matched to Edelbrock Torker II Intakes
Includes Hydraulic Lifters and Assembly Lube
Dyno Matched/Street Proven Performance
Take The Guesswork Out Of Camshaft Selection

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$1065.99

Product Features:

50-State Street Legal Aluminum Cylinder Head
Out-of-the-Box Bolt-On Performance
70cc Combustion Chambers Improve Performance
Retain Stock Compression Ratio

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$17.79

Dowel pins are precision machined and case hardened for accurate head alignment. Two per set. 5/16 inch x 5/8 inch

Product Features:

Precision Machined
Case Hardened
Give Accurate Alignment
2 Per Set

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$270.99

These High Energy Die Cast Aluminum Roller Rocker Arms for Chevy V8 396-454 applications are perfect for street and moderate race use. With a 7/16″ stud diameter and 1.7 ratio, the die cast, larger-than-stock body of the rocker arms is made of aluminum for superior strength with light overall weight. High Energy Die Cast Aluminum Roller Rocker Arms from COMP Cams are an affordable option that feature a die cast, aluminum body with a needle bearing fulcrum and roller tip. Designed to be stiffer and more durable, these cost effective rocker arms are capable of providing added valve lift while withstanding the rigors of a performance application. Their specially engineered fulcrum and roller tip create far less friction than sliding factory models to lower oil temperatures, thus improving both response and horsepower. Snap rings are used to hold the trunion and bearings locked in place.

Product Features:

Cost effective aluminum construction provides superior strength to weight ratio
Needle bearing fulcrum and roller tip reduce friction and lower oil temperatures for improved response and horsepower
Durable design increases valve lift while withstanding the rigors of moderate race use
Die-formed aluminum body is larger than stock, and may require modifications to stock valve covers for clearance.

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$35.49

Mr. Gasket Ultra-Seal Intake Manifold Gasketss are manufactured from cellulose/nitrile composition gasket material. Provides excellent sealing and durability. Incorporates Silicone beading around each intake and water outlet port to provide additional sealing strength on both sides of each gasket. No gasket sealer required. For original equipment replacement, high performance street, drag race and oval track use. Includes manifold end seals and distributor gasket.

Product Features:

Manufactured from cellulose/nitrile composition gasket material
Provides excellent sealing and durability
Silicone beading on both sides of each gasket
Complete with manifold end seals and distributor gasket
For OE replacement, high performance street, drag race and oval track use

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$28.49

This Mr. Gasket Rear Main Seal is made from silicone to allow the seal to handle extreme engine oil temperature. It also provides for an upgrade for that leaky rope style seal and is a direct replacement for a rubber main seal. It’s also injection molded for a precise fit.

Product Features:

Repairs That Leaky Rear Main Sail
Silicone Rubber to Withstand Extreme Engine Oil Temperatures
Upgrade for Rope Seal Equipped Cars or Direct Replacement for Rubber Main Seal
Injection Molded for Precise Fit

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$35.49

Edge molded rubber water outlet gasket is reusable, great for engines that require regular disassembling for maintenance. Incorporates solid aluminum carrier for strength and rigidity. Can be used with OE replacement or aftermarket chrome water outlets. Requires no gasket sealer.

Product Features:

Edge Molded Rubber Water Outlet Gasket Is Reusable
Requires No Gasket Sealer
Solid Aluminum Carrier For Strength/rigidity
Reusable – Ideal for Engines That Are Frequently Taken Apart & Reassembled

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$350.99

HYDRAULIC – Thumpr: High performance street, stock converter ok, best with 2000+ converter and gears. Choppy/thumping idle.

Product Features:

HYDRAULIC – Thumpr: High performance street, stock converter ok, best with 2000+ converter and gears. Choppy/thumping idle.
279/296 Advertised Duration, 227/241 Duration @ .050″, .498″/.483″ Lift, 107 Lobe Separation
Valve spring upgrade required

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$479.99

Magnum Pushrods from COMP Cams offer an affordable solution for your .080″ wall chromemoly pushrod needs. Designed to withstand the stresses of a high performance engine, Magnum Pushrods are head-treated for extended durability and have precision formed, reinforced ends. Magnum Pushrods are black-oxide finished with their part number and length laser etched onto the surface for easy identification. Available individually and in sets of 8 or 16.

Product Features:

3/8″ Diameter, 8.280″ intake length (qt. 8), 9.250″ exhaust length (qt.8) for Big Block Chevy
One-piece .080″ wall chromemoly steel tubing
Heat-treated for extended durability and guide plate compatibility
Precision formed and reinforced pushrod end
Black-oxide finished with laser-etched part number and length

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$35.99

Precision die-cast for a great fit, these water necks are first polished to a high luster, then chrome plated. Comes with gasket and mounting bolts.

Product Features:

Prevents Water Leaks
Precision Die Cast

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$54.99

Raised 1 Piece Guide Plate Set Chevrolet Big Block With 3/8" Pushrod 7/16" Stud

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$24.99

Fel-Pro Performance Gaskets deliver reliable sealing under grueling racing conditions

Product Features:

Blue Stripe performance cork-rubber gaskets use cork particles evenly distributed throughout a rubber binder resulting in a compressible gasket without leak paths.
Not intended for use in emission controlled vehicles.

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$126.99

Spectre’s Engine Dress-Up Kit was designed for the ’58-’86 Chevrolet small block 265-400. This kit includes: stock height baffled covers, chrome T-bar hold downs, chrome PCV breather, chrome breather, chrome oil filler cap, grommets, and a stainless steel braided PCV hose with red/blue Magna-Clamps. Designed for use with OE specifications for fit and function, Spectre products are engineered to perform as good as they look.

Product Features:

For Chevrolet small block 265 and 400
Kit includes: stock height baffled covers, chrome T-bar hold downs, chrome PCV breather, chrome breather, chrome oil filler cap, grommets, and a stain
Designed for use with OE specifications for fit and function
Made from high quality material

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$223.99

VALVE SEALS, O-RING 11/32″ 1 ST

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$89.99

Finish your custom engine job with these show quality grade 5 chromed 12-point bolts, includes AN washers which have no exposed shoulder for a professional appearance. Includes (12) 3/8-16 x 1 inch bolts with (12) 3/8 inch AN washers.

Product Features:

Chrome plated
Grade 8
12-point head
AN washers with no exposed shoulder for a professional appearance

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$29.99

Mr. Gasket High Performance Thermostats are designed to resist large variations of coolant pressure at high RPM (revolutions per minute). This allows them to fully open at correct temperature consistently regardless of engine RPM. The design also provides the high flow that engines operated a higher RPM need. This thermostat also features a copper/brass construction to further resist corrosion. Mr. Gasket High Performance / High Flow Thermostats are suitable for street, drag race, or oval track applications.

Product Features:

Opens at 160 Degrees
Designed to Resist Large Variations of Coolant Pressure at High RPM
Fully opens at Correct Temperature Consistently Regardless of engine RPM
For High Performance Street, Drag Race, and Oval Track
Copper & Brass Construction – Resists Corrosion
High Flow

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$61.99

Product Features:

4.125 in. Cylinder Bore Diameter
0.039 in. Thickness
8.7cc Volume
Charcoal Color
Two Piece Configuration

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$64.99

Product Features:

Solid Bushing Chain Resists Stretching
For Use with Stock or Edelbrock Camshafts
Stressproof Steel Crank Gears
3 Keyway Setting Points To Ensure Accurate Timing
True Bearing Surface Rolls with the Sprockets
50 State Street Legal

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$49.99

With Mr. Gasket cam degree bushings you fine tune the camshaft timing of your engine to as little as 1 degree. Even aftermarket timing sets with multiple keyways can’t give the range of adjustment these bushings allow. Retard your camshaft to lower the powerband for more low end torque and midrange horsepower, or advance for more top end power. This kit does even number adjustment 0-8 degrees.

Product Features:

Advance the cam for increased torque and horsepower
Tune your powerband for more end torque or increase top end horsepower
Includes (4) offset bushings and (1) 0 degree bushing
Cam sprocket dowel pin hole must be drilled to .406¿ (13/32¿) dia.
Cam sprocket dowel pin hole must be drilled to .406┐ (13/32┐) dia.
Increase Top-End Horsepower

Popular 1978 GMC C25 Performance Engines Categories

Performance Engine Coolant Thermostats

Performance Intake Manifolds

Performance Water Outlet Gaskets

Performance Engine Dress-Up Kits

Performance Engine Water Pumps

Performance Water Outlets

Performance Engine Cylinder Head Gaskets

Performance Engine Camshaft and Lifter Kits

Performance Engine Harmonic Balancers

Performance Engine Intake Manifold Gaskets

Performance Engine Timing Sets and Components

Performance Engine Valve Springs

Performance Engine Valve Cover Gasket Sets

Performance Camshaft and Lifter Kits

Performance Engine Rocker Arms

Performance Engine Camshafts

Performance Engine Oil Pan Gaskets

Performance Intake Manifold Hardware

Performance Engine Valve Lifters

Performance Engine Main Bearing Gasket Sets

Performance Engine Push Rod Guideplates

Performance Engine Cylinder Head Installation Kits

Performance Engine Push Rods

Performance Engine Valve Spring Retainer

Performance Torque Converters

Performance Engine Cylinder Heads

Performance Engine Valve Stem Seal Sets

Performance Engine Camshaft Bolts

Most Popular Performance Engine Cylinder Head Gaskets for 1978 GMC C25s

Enhance your 1978 GMC C25 with one of the 10 Performance Engine Cylinder Head Gaskets we have in stock, starting at just $38.99.

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$42.49

Fel-Pro Performance Gaskets deliver reliable sealing under grueling racing conditions

Product Features:

PROPRIETARY COATING – Nonstick anti-friction coating seals small surface imperfections
NO RETORQUE DESIGN – Steel core helps eliminate the need for retorquing head bolts
SUPERIOR SEAL – Precise embossed Printoseal sealing beads at all vital areas to eliminate leak paths
STRONG AND DURABLE – Features graphite or reinforced fiber facing material and steel armor for strength and durability
DESIGNED FOR IMPERFECT SEALING SURFACES – Engineered and manufactured specifically for the repair environment to help seal imperfect sealing surfaces

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$44.99

Fel-Pro Performance Gaskets deliver reliable sealing under grueling racing conditions

Product Features:

Fel-Pro Performance head gaskets accommodate the high cylinder pressures and cylinder head movement associated with performance engines.
Inserted within a stainless steel armor surrounding each cylinder, wire ring design provides highly concentrated sealing around the combustion chamber.
Raises combustion sealing force to roughly three times that of standard head gaskets.
Steel wire rings for the greatest combustion seal strength.
Not intended for use in emission controlled vehicles.

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$64.99

Fel-Pro Performance Gaskets deliver reliable sealing under grueling racing conditions

Product Features:

PROPRIETARY COATING – Nonstick anti-friction coating seals small surface imperfections
NO RETORQUE DESIGN – Steel core helps eliminate the need for retorquing head bolts
SUPERIOR SEAL – Precise embossed Printoseal sealing beads at all vital areas to eliminate leak paths
STRONG AND DURABLE – Features graphite or reinforced fiber facing material and steel armor for strength and durability
DESIGNED FOR IMPERFECT SEALING SURFACES – Engineered and manufactured specifically for the repair environment to help seal imperfect sealing surfaces

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$51.99

Fel-Pro Performance Gaskets deliver reliable sealing under grueling racing conditions

Product Features:

PROPRIETARY COATING – Nonstick anti-friction coating seals small surface imperfections
NO RETORQUE DESIGN – Steel core helps eliminate the need for retorquing head bolts
SUPERIOR SEAL – Precise embossed Printoseal sealing beads at all vital areas to eliminate leak paths
STRONG AND DURABLE – Features graphite or reinforced fiber facing material and steel armor for strength and durability
DESIGNED FOR IMPERFECT SEALING SURFACES – Engineered and manufactured specifically for the repair environment to help seal imperfect sealing surfaces

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$38.99

Mr. Gasket Steel Shim Cylinder Head Gaskets are for high performance street machines, drag racing and oval track racing. With today’s extreme compression ratios you need stronger more durable gaskets. Mr. Gasket steel shim gaskets are made from .020 inch steel shim stock which is thinner than most composite gaskets increasing engine compression. Stress formed embossments will seal the extreme cylinder pressure.

Product Features:

Manufactured from .020″ steel shim stock.
Thinner than composition head gaskets – increases engine compression.
Stress formed embossments seal extreme cylinder pressures.
For high performance street, drag race and oval track use.

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$74.99

Fel-Pro Performance Gaskets deliver reliable sealing under grueling racing conditions.

Product Features:

Fel-Pro Performance head gaskets accommodate the high cylinder pressures and cylinder head movement associated with performance engines.
Inserted within a stainless steel armor surrounding each cylinder, wire ring design provides highly concentrated sealing around the combustion chamber.
Raises combustion sealing force to roughly three times that of standard head gaskets.
Steel wire rings for the greatest combustion seal strength.
Not intended for use in emission controlled vehicles.

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$53.99

Fel-Pro gaskets are specifically designed for the repair environment to deliver a reliable seal on even the most troublesome applications. Designed for imperfect sealing surfaces and manufactured with proprietary materials, you can count on Fel-Pro for innovative sealing solutions for the real-world repair environment.

Product Features:

PROPRIETARY COATING – Nonstick anti-friction coating seals small surface imperfections
NO RETORQUE DESIGN – Steel core helps eliminate the need for retorquing head bolts
SUPERIOR SEAL – Precise embossed Printo seal sealing beads at all vital areas to eliminate leak paths
STRONG AND DURABLE – Features graphite or reinforced fiber facing material and steel armor for strength and durability
DESIGNED FOR IMPERFECT SEALING SURFACES – Engineered and manufactured specifically for the repair environment to help seal imperfect sealing surfaces

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$71.99

Mr. Gasket Ultra-Seal Head Gaskets are a five layer (graphite core/perforated steel outer layers) composite construction. The graphite core has excellent thermo conductivity (transfers heat) away from hot spots in head preventing gasket burn-out. They provide excellent stability, compressibility and high temperature endurance. A high temperature silicone coating ensures sealing of engine fluids. Compatible with cast iron or aluminum heads, they will not brinell (indent) aluminum cylinder heads. Suitable for high performance street, drag race and oval track use. Sold individually. Gasket bore 4.100 inch, Compressed thickness 0.028 inch

Product Features:

Five layer (graphite core/perforated steel outer layers) composite construction
Graphite core is excellent transferring heat away from hot spots in head preventing gasket burn-out.
Provides excellent stability, compressibility and high temperature endurance
Coated with high temperature silicone to ensure sealing of engine fluids
Will not brinell (indent) aluminum cylinder heads
For high performance street, drag race and oval track use

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$38.99

Manufactured from .020″ steel shim stock.
Thinner than composition head gaskets – increases engine compression.
Stress formed embossments seal extreme cylinder pressures.
For high performance street, drag race and oval track use.

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$61.99

Product Features:

4.125 in. Cylinder Bore Diameter
0.039 in. Thickness
8.7cc Volume
Charcoal Color
Two Piece Configuration

Best-Selling 1978 GMC C25 Performance Engine Intake Manifold Gaskets

Upgrade your C25 with one of our 12 best-selling Performance Engine Intake Manifold Gaskets, earning an average 3.88 stars rating across 36 reviews.

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$50.99

Edelbrock part #7215 Intake Gaskets for 1958-1986 E-Tec 200 Small-Block Chevy allow for optimum flow and performance. Any gasket can create a seal, but a good gasket can do it with less clamping force, and for a longer period of time. The new MP-2N Microp

Product Features:

1.26″x2.24″
E-Tec Port Style
.120″ Thick
Two Piece Configuration
Composite Material

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$35.49

Manufactured from cellulose/nitrile composition gasket material
Provides excellent sealing and durability
Silicone beading on both sides of each gasket
Complete with manifold end seals and distributor gasket
For OE replacement, high performance street, drag race and oval track use

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$28.99

Product Features:

Clean Positive Seal
Embossed Silicone Bead Surrounding The Port
Matched To Manifolds And Cylinder Heads

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$58.99

Ultra-Seal intake manifold gaskets are manufactured from cellulose/nitrile composition gasket material. Provides excellent sealing and durability. Incorporates Silicone beading around each intake and water outlet port to provide additional sealing strength on both sides of each gasket. No gasket sealer required. For OE replacement, high performance street, drag race and oval track use. Includes manifold end seals and distributor gasket.

Product Features:

Manufactured from cellulose/nitrile composition gasket material
Provides excellent sealing and durability
Silicone beading on both sides of each gasket
Complete with manifold end seals and distributor gasket
For OE replacement, high performance street, drag race and oval track use
Creates Tight Leak proof Seal

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$27.99

Fel-Pro Performance Gaskets deliver reliable sealing under grueling racing conditions

Product Features:

DESIGNED FOR IMPERFECT SEALING SURFACES — Engineered and manufactured specifically for the repair environment to help seal imperfect sealing surfaces
SEALING TECHNOLOGIES — Exclusive sealing innovations and technologies with proprietary materials and unique design features to ensure a superior seal for your repair
ENGINEERING EXPERTISE — Parts are designed, reviewed, validated and approved by Fel-Pro engineers through rigorous research and development
REAL-WORLD TESTED — Parts are tested on-vehicle and validated to ensure optimal performance on the road
EVERY PART FOR THE REPAIR — Fel-Pro gasket sets include every part needed for the repair unless otherwise noted

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$32.49

Mr. Gasket Performance Intake Gaskets are manufactured from cellulose/nitrile composition gasket material. They provide excellent sealing and durability. Can be trimmed if necessary for modified port applications. For original equipment replacement, high performance street, drag race and oval track.

Product Features:

Made From Cellulose/nitrile Composition Material
Provides Excellent Sealing And Durability
Can Be Trimmed If Necessary For Modified Port App

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$34.99

Product Features:

Clean Positive Seal
Embossed Silicone Bead Surrounding The Port
Matched To Manifolds And Cylinder Heads

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$44.49

Manufactured from cellulose/nitrile composition gasket material
Provides excellent sealing and durability
Silicone beading on both sides of each gasket
Complete with manifold end seals and distributor gasket
For OE replacement, high performance street, drag race and oval track use

from

$60.99

Manufactured from cellulose/nitrile composition gasket material
Provides excellent sealing and durability
Silicone beading on both sides of each gasket
Complete with manifold end seals and distributor gasket
For OE replacement, high performance street, drag race and oval track use
Creates Tight Leak proof Seal

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$49.99

Mr. Gasket Performance Intake Gaskets are manufactured from cellulose/nitrile composition gasket material. This is a low density material that conforms well to irregular surfaces and has very good crush resistance at high flange pressures. They provide excellent sealing and durability as the material is designed for sealing gasoline, oils, water and coolant in applications up to 350 degrees Fahrenheit. While die-cut for an excellent fit, they can be trimmed if necessary for modified port applications. For original equipment replacement, high performance street, drag race and oval track.

Product Features:

Manufactured from cellulose/nitrile composition gasket material
Provides excellent sealing and durability
Die-cut for an excellent fit
Can be trimmed if necessary for modified port applications
For OE replacement, high performance street, drag race and oval track use

from

$51.99

Manufactured from cellulose/nitrile composition gasket material
Provides excellent sealing and durability
Silicone beading on both sides of each gasket
Complete with manifold end seals and distributor gasket
For OE replacement, high performance street, drag race and oval track use
Creates Tight Leak proof Seal

from

$28.99

Product Features:

Clean Positive Seal
Embossed Silicone Bead Surrounding The Port
Matched To Manifolds And Cylinder Heads

Top-Quality Performance Intake Manifolds for 1978 GMC C25s

Choose a high-quality OEM or aftermarket Performance Intake Manifold for GMC C25s and enjoy top-notch performance from $18.99.

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from

$195.99

Edelbrock part No. 2701 Performer EPS intake manifold is designed for 1986 and earlier 262-400 cubic-inch Chevys. Edelbrock’s Patented Dual-plane, low-rise design with a 180-degree firing order greatly improves torque over a wide rpm range for excellent throttle response. With that the Edelbrock Performer EPS intake manifold has a runner design that’s “tuned” for peak torque at 3500 rpm on a 350-inch engine making it ideal for power from off-idle to 5500 rpm. Dyno tests showed gains of 5 hp and 9 ft-lbs. of torque over the Edelbrock Performer manifold No. 2101 on a 350 Chevy. From 3000 to 4500 rpm, the power increases averaged 5+ ft-lbs. of torque for more performance where you need it most. PLEASE NOTE: Will not fit under stock Corvette hood!

Product Features:

Maximizes Performance with Edelbrock Carburetors
Runners Tuned to Match Square Bore Carburetor
Maximizes Peak Torque Around 3500 RPM
Excellent Throttle Response and Mid-Range Power
For Idle to 5500 RPM Street-Driven Performance
Dual-Plane Low-Rise Intake w/180 deg. Firing Order
Prod. +5 HP and +9 ft/lbs. of Torque Over PN[2101]
PLEASE NOTE: Will not fit under stock Corvette hood!

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$346.99

Product Features:

For Idle to 5500 RPM Street-Driven Performance
Dual-Plane Low-Rise Intake w/180 Deg Firing Order
Patented Runner Design Ensures Broad Torque Curve
Excellent Throttle Response and Mid-Range Power
50-State Street Legal if Correct Carburetor Used
Accepts Late-Model Choke; Waterneck; and HEI
Accepts A/C And Alternator
Accepts Exhaust Heated Chokes

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$279.99

Product Features:

For Idle to 5500 RPM Street-Driven Performance
Dual-Plane Low-Rise Intake w/180 Deg Firing Order
Patented Runner Design Ensures Broad Torque Curve
Excellent Throttle Response and Mid-Range Power
50-State Street Legal if Correct Carburetor Used
Accepts Late-Model Choke; Waterneck; and HEI
Accepts A/C And Alternator
Accepts Exhaust Heated Chokes

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$374.99

Based on performer RPM-series with unique air gap. Air gap cooler and denser mixture for more power. Designed for 1500 to 6500 RPM. Dual-plane high-rise intake. For square bore carburetors only. For street and high performance use. Available in cast, polished or endurashine finish.

Product Features:

Based on Performer RPM-Series with Unique Air Gap
Air Gap Cooler and Denser Mixture for More Power
Designed for 1500 to 6500 RPM Street-Driven Power
Dual-Plane High-Rise Intake
For Square Bore Carburetors Only

from

$30.49

These grade 5 hex head bolts are brite zinc plated for protection and appearance. Hardened flat washers provide uniform torque & prevent galling on aluminum manifolds. Includes sixteen (16) 3/8 inch-16 x 1-1/4 inch bolts & washers

Product Features:

Zinc plated Grade 5 steel
Flat washers provide uniform clamp load and prevent galling on aluminum intake manifolds
Ideal For Minimal Space
12-Point Head And Flange
Zinc Plated For Protection

from

$356.99

Product Features:

For Idle to 5500 RPM Street-Driven Performance
Dual-Plane Low-Rise Intake w/180 Deg Firing Order
Patented Runner Design Ensures Broad Torque Curve
Excellent Throttle Response and Mid-Range Power
50-State Street Legal if Correct Carburetor Used
Accepts Late-Model Choke; Waterneck; and HEI
Accepts A/C And Alternator
Accepts Exhaust Heated Chokes and Accepts EGR

from

$339.99

Edelbrock part #2703 Performer EPS intake manifold is designed for 1986 and earlier 262-400 cubic-inch Chevys. Edelbrock’s Patented Dual-plane, low-rise design with a 180-degree firing order greatly improves torque over a wide rpm range for excellent thro

Product Features:

Idle-5500 RPM Range
Dual Plane Type-4150 Style Flange
3.74 in. Front Height, 4.27 in. Center Height, 4.8 in. Rear Height
Satin Finish
Non-EGR W/ Oil Fill Tube

from

$18.99

Replacement gasket for top to bottom. See PN(7110) complete. PN(7067) bottom. PN(7032) top. Includes base and top for intake manifold PN(7110).

Product Features:

Replacement Gasket for Top to Bottom
See PN[7110]Complete; PN[7067]Bottom; PN[7032] Top

from

$26.99

Product Features:

Replacement Gasket For PN[7070] Edelbrock Intake
One Gasket Only

from

$844.99

Based on performer RPM-series with unique air gap. Air gap cooler and denser mixture for more power. Designed for 1500 to 6500 RPM street-driven power. Dual-plane high-rise intake with 180 degree firing order. Produces incredible top-end horsepower. Retai

Product Features:

Polished Version of Edelbrock PN[7562]
Based on Performer RPM-Series with Unique Air Gap
Air Gap Cooler and Denser Mixture for More Power
Designed for 1500 to 6500 RPM Street-Driven Power
Dual-Plane High-Rise Intake w/180 deg Firing Order
Produces Incredible Top-End Horsepower
Retains Good Throttle Response and Acceleration
Larger Plenum and Runners Maximizes Other Upgrades

from

$838.99

For 3500 to 7500 PRM. Use where low-end torque is not a prime factor. Great for engines with slightly modified heads. HEI ignition will not clear manifold. Street machines, street rods, pro-street and marine.

Product Features:

For 3500 to 7500 RPM
Use Where Low-End Torque is Not a Prime Factor
Great For Engines w/Slightly Modified Heads
Top Has Vacuum Outlet for Power Brakes
Will Accept Forward and Sideways Mounted Carbs
Carburetor Center-to-Center Dimensions 9.38 in
HEI Ignition Will Not Clear Manifold
Street Machines; Street Rods; Pro-Street; Marine

from

$749.99

Polished Version Of Edelbrock PN[7501]
Polish is Hand-Buffed for Brilliant Shine
Based on Performer RPM-Series with Unique Air Gap
Air Gap Cooler and Denser Mixture for More Power
Designed for 1500 to 6500 RPM Street-Driven Power
Produces Incredible Top-End Horsepower
Retains Good Throttle Response and Acceleration
Larger Plenum and Runners Maximizes Other Upgrades

from

$663.99

For 3500 to 7500 RPM
Use Where Low-End Torque is Not a Prime Factor
Great For Engines w/Slightly Modified Heads
Top Has Vacuum Outlet for Power Brakes
Will Accept Forward and Sideways Mounted Carbs
Carburetor Center-to-Center Dimensions 8.875 in
HEI Ignition Will Not Clear Manifold
For Street Mach.; Street Rods; Pro-Street; Marine

from

$618.99

Edelbrock part #75613 RPM Air-Gap 2-O intake manifold is designed for street 396-502 c.i.d. Chevy V8’s with large oval-port cylinder heads (1975 and earlier) or Edelbrock Performer/Performer RPM heads. The RPM Air-Gap incorporates the same race-winning te

Product Features:

1500-6500 RPM Range
Dual Plane Type-4150 Style Flange
4.45 in. Front Height, 5.22 in. Center Height, 6 in. Rear Height
Black Powder Coated Finish
Non-EGR

from

$562.99

Product Features:

For Idle to 5500 RPM Street-Driven Performance
Dual-Plane Low-Rise Intake w/180 Deg Firing Order
Patented Runner Design Ensures Broad Torque Curve
Excellent Throttle Response and Mid-Range Power
50-State Street Legal for 1987-90GM Trucks
Accepts Stock Throttle Body EFI and EGR
Match w/Camshaft PN[2162] and Head PN[60499]
Package improves 0-60 mph times by 1.70 seconds

from

$530.99

Product Features:

Polished Version Of Edelbrock PN[2701]
Polish is Hand-Buffed for Brilliant Shine
Maximizes Performance with Edelbrock Carburetors
Maximizes Peak Torque Around 3500 RPM
Excellent Throttle Response and Mid-Range Power
Prod. +5 HP and +9 ft/lbs. of Torque Over PN[2101]
For Idle to 5500 RPM Street-Driven Performance
Dual-Plane Low-Rise Intake w/180 deg. Firing Order

from

$519.99

For 3500-8500 RPM high performance engines. Not for sale or use on pollution controlled motor vehicles. For racing use only. Extended Constant cross-section of runners. Great mid-range torque for short track power. Improved throttle response for 60 feet times. Direct line of sight flow path maximizes flow. For 4500 series carburetors and 23 degree heads. Highly efficient cloverleaf plenum design. Runners have large 3.20 square inch cross section. Not for sale or use on pollution controlled motor vehicles. For racing use only.

Product Features:

For 3500 to 8000 RPM High-Performance Engines
Extended Constant Cross-Section of Runners
Great Mid-Range Torque For Short Track Power
Improved Throttle Response For 60 ft. Times
Direct Line of Sight Flow Path Maximizes Flow
For 4500 Series Carburetors and Raised Port Heads
Highly Efficient Cloverleaf Plenum Design
Runners have Large 3.20 square in. Cross Section

from

$509.99

Air gap cooler and denser mixture for more power. Street and high performance compatible. Available in cast, polished and endurashine finish.

Product Features:

Based on C26 Low Profile with Unique Air Gap
Air Gap Cooler and Denser Mixture for More Power
1.625 in. Taller Than Low-Profile PN[5425]
Also Available In EnduraShine Finish PN[75254]
Also Available As Complete Kit PN[2025/20254]
Best When Matched with Edelbrock 500cfm Carburetor
Use Fuel Line Kit PN[8088/8091]
Use Progressive Throttle Linkage Kit PN[7094]

from

$497.99

Product Features:

Designed for Idle to 5500 RPM
Manifold has a Balanced 180+ Firing Order
Contains Exhaust Gas Heat Riser
Offers Excellent Performance Potential
Front Oil Filler Tube Boss Included
Carburetor Center-to-Center Dimensions = 5-1/2 in
Also Available Polished PN[5419] But Not Fit HEI
Use Rochester 2GC (small 1-7/16 in bore)

from

$487.99

Edelbrock part #2999 Victor Jr. 23 degree Tall intake manifold provides maximum performance for engines with standard port location, iron and aluminum cylinder heads. This versatile manifold is excellent for many applications from high-performance’s stree

Product Features:

Race Winning Design for all Types of Competition
Single Plane Maximizes Torque and Horsepower
For Performance in 3500 to 7500 RPM Range
Exit Ports Closely Match Unported GM Bowtie Heads
Ports Match GM PN[14011058/14011034/10134392]
Best for Classes Restricting Porting of Intakes
Features 1 in. Taller Carb Pad than PN[2972]

from

$454.99

use Performer 2-O #2161.

Product Features:

2500 to 6500 RPM High Performance Street Engines
Single-Plane Low-Rise Intake Good for High RPM
Ideal for Applications with Limited Hood Clearance
For Top-End HP and Adequate Throttle Response
Not for Mileage or Emissions Applications
Use with Large Oval Port Heads (1975 and Earlier)
Will fit Under Corvette Hood Without Modifications
Not For Tall Block V8 Engines

from

$435.99

Product Features:

High Rise/Dual Plane Design For Maximum Torque
Fully CNC Machined For A Perfect Fit
Square Bore Carburetor Flange
Exhaust Crossover For Improved Street Drivability
Permanent Mold Casting Process
Lighter/Smoother/Better Looking
More Consistent Castings

from

$427.99

Holley products have been the undisputed leader in fuel systems for over 100 years. Holley carburetors power every NASCAR Sprint Cup team and every NHRA Pro-Stock champion. Holley’s products include performance fuel pumps, fuel injection, intake manifolds, cylinder heads & engine dress-up products for street performance, race and marine applications. As a single solution, or partnered with products from other Holley companies, Hooker Headers, Flowtech Headers, NOS, Weiand, or Earl’s, Holley products can give you the edge you need over the competition.

Product Features:

Single Plane/Open Plenum Design
Deep Plenum Design With Isolated Runners
4150 Square Bore Carburetor Mounting Flange
Power Band 4500-8500 rpm
Height Front 4.77 in. Rear 6.16 in.
Port Size 2.30 in. Height 1.60 in. Width
50 State Legal

from

$425.99

Race winning design for all types of competition. Single plane maximizes torque and horsepower. Runners feature extra material for custom porting. For performance in 3500 to 7500 RPM range. Low profile design helps minimal hood clearance. Can use 1 or 2 inch spacers to tune performance. Use PN(2999) where 1 inch spacers are not allowed. Best for standard port heads.

Product Features:

Race Winning Design for all Types of Competition
Single Plane Maximizes Torque and Horsepower
Runners Feature Extra Material for Custom Porting
For Performance in 3500 to 7500 RPM Range
Low Profile Design Helps Minimal Hood Clearance
Can Use 1 Or 2 in. Spacers To Tune Performance
Use PN[2999] Where 1 in. Spacers Not Allowed
Best for Standard Port Heads

from

$401.99

Product Features:

from

$387.99

Product Features:

For Idle to 5500 RPM Street-Driven Performance
Dual-Plane Low-Rise Intake w/180 deg. Firing Order
Patented Runner Design Ensures Broad Torque Curve
Excellent Throttle Response and Mid-Range Power
50-State Street Legal if Correct Carburetor Used
Will Not Fit Under Corvette Hoods
Available in Multiple Finishes
Use Choke Rod PN[9179] for Stock Carburetor

from

$286.99

Product Features:

2000-6500 RPM Power Band
Single Plane/Open Plenum Design
No Provision For Divorced Or Hot Air Choke
Square Flange Carburetor Mounting

from

$236.99

Throttle linkage kit for street tunnel and Victor Ram. Use for sideways mounted carburetors only.

Product Features:

Throttle Linkage Kit for Street Tunnel/Victor Ram
Use for Sideways Mounted Carburetors Only

from

$224.99

Throttle linkage kit for street tunnel ram. Use for sideways mounted carburetors only. Use Holley PN(0-9776) for sideways mounted applications. Not legal for sale or use on pollution controlled motor vehicles.

Product Features:

Throttle Linkage Kit for Street Tunnel Ram
Use for Sideways Mounted Carburetors Only
Use Holley PN[0-9776] For Sideways Mount Apps

from

$201.99

For 6500 to 10000 RPM. Tope only- see footnotes for base choices. Mounts two standard flange carburetors sideways. Use with throttle linkage PN(7071). Includes top gasket PN(6988).

Product Features:

For 6500 to 10000 RPM
Top Only – See Footnotes For Base Choices
Mounts Two Standard Flange Carburetors Sideways
Use with Throttle Linkage PN[7071]
Includes Top Gasket PN[6988]

from

$87.99

Product Features:

Mounts Standard Flange Holley Carbs Sideways
Use on Tunnel Rams
0.550 in. Thick

from

$20.99

Replacement gasket for Edelbrock tunnel ram intake. Use with intake PN(7115). Base PN(7190). Top PN(7191). One gasket only.

Product Features:

Replacement Gasket for Edelbrock Tunnel Ram Intake
Use w/Intake PN[7115]/Base PN[7190]/Top PN[7191]
One Gasket Only

Top Picks for 1978 GMC C25 Performance Engine Coolant Thermostats

Invest in one of our 3 durable Performance Engine Coolant Thermostats for your 1978 GMC, knowing you’re getting trusted brands and expert craftsmanship.

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from

$29.99

Opens At 180 Degrees
Designed to Resist Large Variations of Coolant Pressure at High RPM
Fully Opens at Correct Temperature Consistently Regardless of Engine RPM
For High Performance Street, Drag Race, and Oval Track
Copper & Brass Construction – Resists Corrosion
High Flow

from

$29.99

Opens at 160 Degrees
Designed to Resist Large Variations of Coolant Pressure at High RPM
Fully opens at Correct Temperature Consistently Regardless of engine RPM
For High Performance Street, Drag Race, and Oval Track
Copper & Brass Construction – Resists Corrosion
High Flow

from

$32.49

Opens At 195 Degrees
Designed to Resist Large Variations of Coolant Pressure at High RPM
Fully Opens at Correct Temperature Consistently Regardless of Engine RPM
For High Performance Street, Drag Race, and Oval Track
Copper & Brass Construction – Resists Corrosion
High Flow

Our Performance Water Outlets for 1978 GMC C25s

Make a smart move for your 1978 GMC C25 with our Performance Water Outlet for $32.49.

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from

$32.49

Precision die cast, these water necks are first polished to a high luster, then chrome plated. Features an O-ring style seal to prevent water leaks. Comes with O-ring gasket and mounting bolts.

Product Features:

Complete with o-rings and mounting bolts
Features an o-ring style seal to prevent water leaks
Chrome plated
1/2″ NPT port can be used for various coolant temp related sensors or switches

Top-Rated Performance Engine Brands For Your 1978 GMC C25

When it comes to finding the perfect Performance Engine for your 1978 GMC C25, Advance Auto Parts has you covered with a wide selection of high-quality OEM and aftermarket options from 8 trusted brands. We carry the most popular Performance Engine brands including Edelbrock, Competition Cams, and FEL-PRO Performance, and more, all known for their exceptional customer ratings (average brand rating of 4.4 stars) and competitive prices, as low as $33.99. Purchasing a Performance Engine from us here at Advance Auto Parts is a smart move for both you and your 1978 GMC C25, providing peace of mind with parts that meet or exceed OEM standards.

Popular Edelbrock 1978 GMC C25 Performance Engines

If you’re looking for a top-quality Performance Engine for your 1978 GMC C25, Advance Auto Parts has exactly what you need with our selection of Edelbrock Performance Engines. We have 3 Edelbrock Performance Engines in stock for this fitment, all known for their durability and precision fit. With prices starting at just $195.99 and an average cost of $274.32, you’ll find the perfect Performance Engine for your needs and budget. Edelbrock Performance Engines for the 1978 GMC C25 come highly rated, with over 11 customer reviews and an impressive average rating of 4.4 stars. Choosing a Edelbrock Performance Engine from Advance Auto Parts is a smart move to ensure quality and value for your vehicle.

from $195.99

(7)

Performer EPS Intake Manifold for 1955-86 Small-Block Chevy

“Great product and great price”

from $279.99

(3)

Performer Intake Manifold for 1955-86 Small-Block Chevy, Satin Finish

“Get the matching carb, increased HP by 50 points”

from $346.99

(1)

Performer Intake Manifold for 1987-95 Small Block Chevy, Satin Finish

“product fit as described , no complaints”

Top-Quality Competition Cams 1978 GMC C25 Performance Engines

For those in search of a high-quality Performance Engine for their 1978 GMC C25, Advance Auto Parts offers a great selection of Competition Cams Performance Engines. With 3 Competition Cams Performance Engines in stock, you can trust you’re getting top-tier parts designed for durability and a perfect fit. Prices for these Performance Engines start at just $33.99, with an average price of $158.66, giving you a range of options to suit your budget. Backed by over 3 customer ratings and an average rating of 4.2 stars, Competition Cams Performance Engines provide both reliability and excellent performance. Choosing a Competition Cams Performance Engine from Advance Auto Parts is a smart investment in your vehicle’s performance and longevity.

from $217.99

(1)

MAGNUM ROLLER ROCKERS, SMALL BLOCK CHEVY 1.52 1 ST

“just spill on break in oil on rocker wheels,adjust nut down till u can’t go any more and then back off 1/2 turn and your done no noise on start up eve”

from $33.99

(1)

(16) Positive Stop PTFE Valve Seals: for 3/8" Valves and .530" Guides

“As good as OEM.”

from $223.99

(1)

Valve Seals, O-Ring 11/32" 1 St

“Replaced as original, super easy to install!”

FAQs for 1978 GMC C25 Performance Engines

What are the best-selling Performance Engines for 1978 GMC C25s?

Out of 219 Performance Engines that fit 1978 GMC C25s, the following parts are the top sellers:

Performer EPS Intake Manifold for 1955-86 Small-Block Chevy (17340006) – $195.99
Ultra Seal: Harmonic Balancer Bolt/Washer Kit (89012650) – $15.49
Intake Manifold Gasket for 1958-1986 Small-Block Chevy (17140110) – $28.99

What’s the price range for 1978 GMC C25 Performance Engines?

The prices of Performance Engines for the 1978 GMC C25 range from $7.99 up to $1,201.99 for the most premium parts.

What is the average price of a Performance Engine for a 1978 GMC C25?

The average price for Performance Engines for the 1978 GMC C25 is $272.15. Keep in mind the variety of part types within our Performance Engine category, where you are likely to find a wide range of prices across a variety of parts and components.

Does Advance Auto Parts sell Performance Engines for other GMC C25 model years?

Yes, we carry Performance Engines for 2 model years of GMC C25s between 1975 and 1977. The following model years are the most popular for Performance Engine purchases: 1977, 1976, and 1975.

What are the cheapest Performance Engines for my 1978 GMC C25?

The cheapest 1978 GMC C25 Performance Engines we carry are:

High Energy 7.794" Long, 5/16" Diameter Pushrod (50289688) – $7.99
Bolt Kit Intake Hex Head (22905656) – $10.99
10 Degree Steel Retainer for 26120 Beehive Spring (50289146) – $10.99
7 Degree Steel Retainer for 3/8" Valve with 1.437"-1.500" Spring (50289111) – $10.99
Ultra Seal: Harmonic Balancer Bolt/Washer Kit (89012650) – $15.49

Does Advance Auto Parts sell Performance Engines for any other 1978 GMC models?

Yes. We stock Performance Engines for 12 other popular 1978 GMC models. Some of the most popular are 1978 Jimmy Performance Engines, 1978 Caballero Performance Engines, 1978 K25 Performance Engines, 1978 K15 Performance Engines, and 1978 G25 Performance Engines.

What are the top-rated Performance Engines that fit the 1978 GMC C25?

Based on 470 reviews by customers, our 1978 GMC C25 Performance Engines have an average customer rating of 5 stars. These are the highest-rated categories of Performance Engines for the 1978 GMC C25 and their top-rated products:

Performance Engine Valve Springs
- Complete Sure Seat Valve Spring Kit for Chevy 262-400 V8 1957-95 (17140458) – $159.99
- Sure Seat Valve Springs for Chevy 262-400 V8 1957-95 (5027381) – $64.99
Performance Engine Timing Sets and Components
- TIMING SET, HIGH TECH SMALL BLOCK CHEVY 1 EA (10214923) – $83.99
- High Energy Timing Set (10214805) – $66.99

What types of Performance Engines do you sell for my 1978 GMC C25?

As of 6/2/26, these are some of the most in-demand types of Performance Engines for a 1978 GMC C25:

Can I get help with 1978 GMC C25 Performance Engine orders?

Contact our customer support team by chat or phone, through the help desk page, where you can find instant answers about GMC Performance Engines and more.

What is your return policy for GMC C25 Performance Engines?

Advance Auto Parts keeps returns simple. For new GMC C25 Performance Engines and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.

1978 GMC C25 Performance Engines

Mr. Gasket – Cam Bolt Lock Plate Kit (Part No.948G)

Mr. Gasket – Bolt Water Pump (Part No.4996)

Edelbrock – Edelbrock Performer Intake Manifold Small-Block Chevy (Part No.3706)

Competition Cams – Tool Steel 10 Degree Retainer Set Of 16 For All Valves With 1.250" O.D. Springs (Part No.1750-16)

Mr. Gasket – Ultra Seal: Harmonic Balancer Bolt/Washer Kit (Part No.945G)

B & M – Holeshot 3600 (Part No.20425)

FEL-PRO Performance – PERFORMANCE OIL PAN GASKET SET (Part No.1884 R)

Edelbrock – Sure Seat Valve Springs for Chevy 262-400 V8 1957-95 (Part No.5802)

Competition Cams – XE 240/246 Hydraulic Flat Cam/Lifter Kit (Part No.CL11-250-3)

Edelbrock – Torker-Plus Camshaft Kit for Big-Block Chevy 396-427-454 V8 (Part No.5062)

Edelbrock – RPM Small-Block Chevy Cylinder Head SBC 70cc Hydraulic Flat Tappet Cam (Part No.60759)

Mr. Gasket – Cylinder Head Dowel Pins (Part No.4375)

Competition Cams – Rocker Arms, Die Cast Alum Big Block Chevy 1.7 1 St (Part No.17021-16)

Mr. Gasket – Ultra-Seal Intake Manifold Gasket with Silicone Beading (Part No.5821)

Mr. Gasket – Rear Main Seal Gasket (Part No.1960)

Mr. Gasket – Premium Quality Thermostat Gasket with Solid Aluminum Carrier (Part No.738G)

Competition Cams – Thumpr 227/241 Hydraulic Flat Cam for Chevrolet Big Block 396-454 (Part No.11-600-4)

Competition Cams – Magnum 8.280" and 9.250" Long, .080" Wall, 3/8" Diameter Pushrod Set (Part No.7154-16)

Mr. Gasket – Water Neck (Part No.9845)

Competition Cams – Raised 1 Piece Guide Plate Set Chevrolet Big Block With 3/8" Pushrod 7/16" Stud (Part No.4806-8)

FEL-PRO Performance – Engine Valve Cover Gasket Set (Part No.1606)

Spectre – W3 Engine Kit Sb Chevy (Part No.54083)

Competition Cams – Valve Seals, O-Ring 11/32" 1 St (Part No.501-16)

Mr. Gasket – Intake Bolt Kit (Part No.5003)

Mr. Gasket – High Performance Thermostat – 160 Degree Brass & Copper (Part No.4363)

Edelbrock – Cylinder Head Gasket Set for Chevrolet, 4.125 Bore Size (Part No.7310)

Edelbrock – Performer-Link Adjustable True-Roller Timing Chain Set (Part No.7809)

Mr. Gasket – Advance And Retard Cam Bushings (Part No.85)

FEL-PRO Performance – Cylinder Head Gasket: Multi-Layered Steel, Without Head Bolts (Part No.1003)

FEL-PRO Performance – Cylinder Head Gasket: Steel Core Composite, Without Head Bolts (Part No.1004)

FEL-PRO Performance – Cylinder Head Gasket: Steel Core Composite, Without Head Bolts (Part No.1037)

FEL-PRO Performance – Cylinder Head Gasket: Steel Core Composite, Without Head Bolts (Part No.1010)

Mr. Gasket – Head Gasket (Part No.1131G)

FEL-PRO Performance – Performance Cylinder Head Gasket (Part No.1025)

FEL-PRO Performance – Stainless steel core laminate Engine Cylinder Head Gasket (Part No.1047)

Mr. Gasket – Head Gasket (Part No.1134G)

Mr. Gasket – Head Gasket (Part No.1130G)

Edelbrock – Cylinder Head Gasket Set for Chevrolet, 4.125 Bore Size (Part No.7310)

Edelbrock – Intake Manifold Gasket for 1958-1986 E-Tec 200 Small-Block Chevy (Part No.7215)

Mr. Gasket – Ultra-Seal Intake Manifold Gasket with Silicone Beading (Part No.5821)

Edelbrock – Intake Manifold Gasket for 1958-1986 Small-Block Chevy (Part No.7201)

Mr. Gasket – Ultra Seal: Intake Gasket (Part No.5819)

FEL-PRO Performance – Lower Intake Manifold Gasket Set: 9 Piece Set (Part No.1212)

Mr. Gasket – Intake Gasket (Part No.121)

Edelbrock – Intake Manifold Gasket for 1965-1990, Oval port 396-402-454 B/B Chevy (Part No.7203)

Mr. Gasket – Ultra Seal: Intake Gasket (Part No.5827)

Mr. Gasket – Gskt Intake (Part No.5812)

Mr. Gasket – Intake Gasket (Part No.143)

Mr. Gasket – Ultra Seal: Intake Gasket (Part No.5817)

Edelbrock – Intake Manifold Gasket for 1991 & Later Rectangular port 454 B/B Chevy (Part No.7202)

Edelbrock – Performer EPS Intake Manifold for 1955-86 Small-Block Chevy (Part No.2701)

Edelbrock – Performer Intake Manifold for 1987-95 Small Block Chevy, Satin Finish (Part No.2104)

Edelbrock – Performer Intake Manifold for 1955-86 Small-Block Chevy, Satin Finish (Part No.2101)

Edelbrock – Performer RPM Small Block Chevy AIR-Gap Intake Manifold (Part No.7501)

Mr. Gasket – Intake Manifold Bolts (Part No.957G)

Edelbrock – Performer Small-Block Chevy Intake Manifold for Street Performance (Part No.3701)

Edelbrock – Performer EPS Intake Manifold w/ Oil Fill Tube for 1955-86 Small-Block Chevy (Part No.2703)

Edelbrock – Intake Manifold replacement base to top gasket (Part No.6999)

Edelbrock – Intake Manifold Replacement Top Gasket for No. 7070 Intake Manifold (Part No.6988)

Edelbrock – RPM Air-Gap Big Block Chevy 2-R Black Intake Manifold (Part No.75621)

Edelbrock – Street Tunnel Ram Big Block Chevy 2-O Intake Manifold (Part No.7115)

Edelbrock – Performer RPM AIR-Gap Small Block Chevy Polished Intake Manifold (Part No.75011)

Edelbrock – Street Tunnel Ram Small Block Chevy Intake Manifold (Part No.7110)

Edelbrock – RPM Air-Gap Big Block Chevy 2-O Black Intake Manifold (Part No.75613)

Edelbrock – Performer 454 T.B.I. Intake Manifold Big-Block Chevy (Part No.3764)

Edelbrock – Performer EPS Intake Manifold for 1955-86 Small-Block Chevy, Polished Finish (Part No.27011)

Edelbrock – Super Victor 4500 for Raised Port 23 Degree Intake Manifold Small-Block Chevy (Part No.2971)

Edelbrock – Performer RPM AIR-Gap Small Block Chevy Dual-Quad Intake Manifold (Part No.7525)

Edelbrock – C-357-B Triple-Deuce Manifold for S/B Chevy 4-Bolt Carb Pattern (Part No.5419)

Edelbrock – Victor Jr. 23 Degree Tall Intake Manifold Small-Block Chevy (Part No.2999)

Edelbrock – Torker II 2-O Big Block Chevy Intake Manifold (Part No.5061)

Weiand – Stealth; Intake Manifold (Part No.8018)

Holley – Intake Manifold (Part No.300-5)

Edelbrock – Victor Jr. 23 Degree Intake Manifold Small-Block Chevy (Part No.2975)

Edelbrock – Edelbrock Performer Intake Manifold Small-Block Chevy (Part No.3706)

Edelbrock – Performer 2-O Intake Manifold for 1965-90 Big-Block Chevy w/Oval Port Heads (Part No.2161)

Weiand – X-CELerator; Intake Manifold (Part No.7547-1)

Edelbrock – Side-Mount Throttle Linkage for B/B Chevy #7075 Victor 2-R Manifold (Part No.7077)

Edelbrock – Side-Mount Throttle Linkage for S/B Chevy #7110 Street Tunnel Ram Manifold (Part No.7071)