1970 GMC K25/K2500 Pickup Performance Engines

Essential 1970 GMC K25/K2500 Pickup Performance Engines

Weiand – Action Plus Water Pumps (Part No.9240P)

Action Plus Water Pumps

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$215.99
Weiand’s light weight, performance aluminum mechanical Action-Plus water pumps give a weight saving of 30 percent to 50 percent over stock cast-iron pumps. These pumps feature a premium quality bearing and seal that have twice the load capacity of stock pumps. Weiand’s exclusive housing counter bore keeps the bearing form walking out. All pumps are designed with the necessary bracket bosses and water connections to fit popular street applications.

Product Features:
  • Twisted Snout Water Pump Design For Updated Style
  • Street Performance
  • Heavy Duty Shaft w/5/8 in. Pilot
  • Six-Blade Stamped Steel
  • Anti-Cavitation Impeller
  • 100 Percent Leak Tested
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Spectre – Chevrolet Small Block V8 Harmonic Balancer Bolt Kit (Part No.4699)

Chevrolet Small Block V8 Harmonic Balancer Bolt Kit

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$7.99
Spectre’s Harmonic Balancer Bolt Kit is designed to fit Chevrolet Small Block 265-400 V8 engines. This grade 8 bolt is 2-1/2 inches long, and features a plated finish for corrosion resistance. This kit also includes a security lock washer.

Product Features:
  • Fits Chevrolet Small Block 265-400 V8 engines
  • Features a corrosion resistant plated finish
  • Gold iridite finish
  • Grade 8 bolt, 7/16 inch-20 by 2-1/2 inches
  • Includes security lock washer
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Mr. Gasket – Mls Head Gasket (Part No.3132G)

Mls Head Gasket

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$102.99
Our unique Multi-Layered steel head gasket embossment formation process optimizes the embossment radius, reduces stress points, enhances gasket conformability, and provides uniform clamp load distribution. This all results in superior surface contact between block and cylinder head. All head gasket layers/spacers go through an additional process to significantly reduce forming induced stress. Advantages are reduced brittleness in material, increased flexibility and deformation retention. This stabilizes the gasket, resulting in reduced cylinder bore distortion and improved combustion seal fro the extreme cylinder pressures found in high compression, supercharged and turbocharged applications. A proprietary polymer coating ensures the micro-seal of engine coolant and oil fluids.brbrA typical MLS head gasket requires a smoother (30Ra) surface finish than composite head gaskets. Mr. Gasket’s proprietary polymer coating will seal a surface finish twice as rough (60Ra) as a typical MLS head gasket. For high performance street, drag race and oval track use.

Product Features:
  • Gasket bore – 4.165 inch: Compressed thickness – .040 inch
  • Manufactured from 3-layer premium grade stainless steel and state of the art laser cutting
  • Optimized sealing embossments seals extreme cylinder pressure
  • Provides excellent stability and reduces cylinder bore distortion.
  • Proprietary polymer coating ensures the micro seal of engine coolant and oil fluids.
  • Ideal for supercharged, turbocharged, nitrous oxide and extreme compression ratio engines
  • For high-performance street, drag race and oval track use
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Competition Cams – Magnum Double Row Timing Set for ’65-’91 396-454 Chevrolet Big Block (Part No.2110)

Magnum Double Row Timing Set for '65-'91 396-454 Chevrolet Big Block

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$104.99
COMP Cams Magnum Double Roller Timing Sets include induction hardened cast iron camshaft gears, billet steel crank sprockets and heavy-duty, heat-treated double roller timing chains. They feature 3 keyway crank sprockets for 4° incremental adjustability w

Product Features:
  • Features 3 keyway crank sprocket for 4-degree incremental adjustability, 4-degree maximum advance/retard
  • Induction hardened cast iron camshaft gear & billet steel crank sprocket
  • Ideal for mild street performance
  • Heavy-duty, heat-treated double row timing chain; chain available separately
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Mr. Gasket – Intake Bolt Kit (Part No.5004)

Intake Bolt Kit

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$61.99
Finish your custom engine job with these show quality grade 5 chromed bolts, includes AN washers which have no exposed shoulder for a professional appearance. Includes (12) 3/8-16 x 1-1/4 inch bolts and (12) 3/8 inch AN washers.

Product Features:
  • Chrome plated
  • Grade 5
  • AN washers with no exposed shoulder for a professional appearance
  • Ideal For Street Rods/Machines
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Mr. Gasket – Water Neck (Part No.9142G)

Water Neck

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$64.99
Chrome water neck with a swivel top allows you to place your coolant hose where you want it to be, not just where the neck allows. Precision die cast for better fitment, 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:
  • Chrome plated Aluminum
  • O-Ring Style To Prevent Leaks (o-ring included)
  • Swivels for Hard to Fit Applications
  • Comes With Allen Head Bolts
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FEL-PRO Performance – PERFORMANCE OIL PAN GASKET SET (Part No.1819)

PERFORMANCE OIL PAN GASKET SET

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$31.49
Fel-Pro Performance Gaskets deliver reliable sealing under grueling racing conditions

Product Features:
  • Felcoid/Plus gaskets have a fiber sheet core and a latex rubber coating to eliminate potential leakage paths. The core material resists crushing and splitting, while providing excellent blowout resistance.
  • With steel core to provide ultimate excellent blowout resistance.
  • Not intended for use in emission controlled vehicles.
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Mr. Gasket – Valve Cover Gasket Set (Part No.182)

Valve Cover Gasket Set

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$42.99
Mr. Gasket Performance Valve Cover Gaskets are high-density cork/rubber blend gaskets that use evenly sized cork particles distributed evenly throughout the rubber binder. The result is a compressible valve cover gasket without leak paths. These gaskets create a positive seal by controlled swelling of the gasket material when exposed to hot engine oil. Provides excellent flange sealing and durability. For original equipment replacement, high performance street, drag race and oval track use.brbrThese gaskets are .312 inch thick. That’s substantially thicker than stock which can allow for additional valve train clearance.brbrFits Chevrolet 396,402,427,454,502 Gen IV, Gen V and Gen VI Big Block.

Product Features:
  • This Gasket Has A Cork Rubber Blend
  • Provides Excellent Sealing And Durability
  • Extra Thick For The Hard To Seal Applications
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Competition Cams – CAMSHAFT, SBC 268 HIGH ENERGY HYDRAULIC 1 EA (Part No.12-210-2)

CAMSHAFT, SBC 268 HIGH ENERGY HYDRAULIC 1 EA

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$537.99
Ideal for use with mainly stock components like rocker arms, intake manifolds, cylinder heads, compression ratio, torque converters and rear gear ratios, the High Energy camshaft grind family is a great choice for street performance applications. Offering

Product Features:
  • Good blend of efficiency and performance.
  • Perfect choice for performance street rebuilds.
  • Work well with mainly stock components such as rockers, manifolds, heads, compression, torque converters and gears.
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Competition Cams – Set of 16 Single Springs w/ 1.254" O.D., 1.254" I.D., 1.700" Installed Height (Part No.981-16)

Set of 16 Single Springs w/ 1.254" O.D., 1.254" I.D., 1.700" Installed Height

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$126.99
Single Outer Valve Springs from COMP Cams allow you to build the perfect spring assembly for your application. The valve spring creation process is far more involved than most people realize. Selecting the right metal stock and creating the best design is not done by chance. COMP Cams has developed a process that creates the highest quality valve spring available. The result is a product that meets and exceeds the expectations of today’s engine builders and racers.

Product Features:
  • Seat pressure: 105 lbs. @ 1.700″, Open Pressure: 273 lbs. @ 1.250″
  • O.D.: 1.254″, I.D.: .880″
  • Single valve springs with damper
  • Approximately .490″ max lift at recommended installed height
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Edelbrock – Front Timing Cover Gasket Set #6997 For Small-Block Chevy, With Front Seal (Part No.6997)

Front Timing Cover Gasket Set #6997 For Small-Block Chevy, With Front Seal

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$17.99
Product Features:
  • For Small-Block Chevy
  • One Piece Configuration
  • Includes Front Cover Gasket & Front Seal
  • Includes Necessary Gaskets & Crankshaft Oil Seal
  • For Replacement Or Installation
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Mr. Gasket – Lts Throttle Cable Brkt Chev (Part No.9885)

Lts Throttle Cable Brkt Chev

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$14.99
The throttle cable bracket is designed for small block Chevy engines thru 1979 and is to be used in conjunction with the kick down cable Pn9886 for the Turbo 350 transmission. The throttle cable bracket mounts on the intake manifold and will hold cables with round or square mounts. It has a 2 inch adjustable range and is finished off in a beautiful chrome plating.

Product Features:
  • 2 in. adjustable range
  • Includes necessary hardware
  • Chrome plated
  • Individually packaged
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FEL-PRO Performance – PERFORMANCE REAR MAIN SEAL SET (Part No.2904)

PERFORMANCE REAR MAIN SEAL SET

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$16.29
Fel-Pro Performance Gaskets deliver reliable sealing under grueling racing conditions

Product Features:
  • Meets or exceeds all original equipment specifications
  • Application specific design to ensure a perfect fit
  • Engineered and manufactured specifically for repair applications
  • Unsurpassed quality you can trust
  • Validated for fit, form, and function
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FEL-PRO Performance – Engine Crankshaft Seal Kit (Part No.2918)

Engine Crankshaft Seal Kit

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$42.99
Fel-Pro Performance Gaskets deliver reliable sealing under grueling racing conditions

Product Features:
  • Fluoroelastomer compound combines optimum resistance to heat, oils and abrasion for longivity.
  • Optimizes performance under high crankcase vacuum conditions, elevated temperatures and high RPM levels.
  • Not intended for use in emission controlled vehicles.
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Edelbrock – Intake Manifold Gasket for 1991 & Later Rectangular port 454 B/B Chevy (Part No.7202)

Intake Manifold Gasket for 1991 & Later Rectangular port 454 B/B Chevy

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$26.99


Product Features:
  • Clean Positive Seal
  • Embossed Silicone Bead Surrounding The Port
  • Matched To Manifolds And Cylinder Heads
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Mr. Gasket – Ultra Seal: Intake Gasket (Part No.5817)

Ultra Seal: Intake Gasket

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$42.99
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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Competition Cams – Xtreme Energy 250/256 Hydraulic Flat Cam and Lifter Kit Chevrolet Small Block (Part No.CL12-254-3)

Xtreme Energy 250/256 Hydraulic Flat Cam and Lifter Kit Chevrolet Small Block

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$321.99
SMALL BLOCK CHEVY HYDRAULIC CAM AND LIFTER KIT – Xtreme Energy: Pro Street/bracket, needs good intake, headers, gear and 3300+ stall.

Product Features:
  • Cam and lifter kit for Small Block Chevy engines
  • CL-Kit includes cam, lifters, assembly lube, instructions and decals
  • HYDRAULIC – Xtreme Energy: Pro Street/bracket, needs good intake, headers, gear and 3300+ stall.
  • 294/306 Advertised Duration, 250/256 Duration @ .050″, .519″/.523″ Lift, 110 Lobe Separation
  • Valve spring upgrade required
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Competition Cams – Magnum 253/253 Hydraulic Flat Cam and Lifter Kit for Chevrolet Big Block 396-454 (Part No.CL11-214-4)

Magnum 253/253 Hydraulic Flat Cam and Lifter Kit for Chevrolet Big Block 396-454

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$376.99
An older member of the COMP Cams grind family, the Magnum series of camshafts offers excellent performance gains over stock without the added wear and tear associated with more aggressive camshafts. Ideal for use with higher compression ratio engines that

Product Features:
  • Best with aftermarket torque converters and 9.5:1 compression.
  • Great high RPM power.
  • Easy on valve train parts.
  • Can be used with mild ratio rocker arms and traditional performance valve springs.
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B & M – Torque Converter, Nitrous Holeshot 3000 (Part No.20481)

Torque Converter, Nitrous Holeshot 3000

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$766.99
Nitrous Holeshot Converters are Built with the same features as the other B&M Holeshots, with the addition of anti-balloon plates. The anti-balloon plates will allow these converters to stand up to the instant horsepower nitrous delivers.

Product Features:
  • 2800-3200 RPM
  • Small And Big Blocks
  • Serious Performance
  • Furnace Brazed
  • Fully Balanced
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B & M – Torque Converter, Nitrous Holeshot 3600 (Part No.20482)

Torque Converter, Nitrous Holeshot 3600

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$665.99
Nitrous Holeshot Converters are Built with the same features as the other B&M Holeshots, with the addition of anti-balloon plates. The anti-balloon plates will allow these converters to stand up to the instant horsepower nitrous delivers.

Product Features:
  • 3400-3800 RPM
  • Small And Big Blocks
  • Serious Performance
  • Furnace Brazed
  • Fully Balanced
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Edelbrock – Performer Small-Block Chevy Cylinder Head 64cc Hydraulic Flat Tappet (Part No.60909)

Performer Small-Block Chevy Cylinder Head 64cc Hydraulic Flat Tappet

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$1009.99
Product Features:
  • 50-State Street Legal Aluminum Cylinder Head
  • Out-of-the-Box Bolt-On Performance
  • 64cc Combustion Chambers Improve Performance
  • Retain Stock Compression Ratio
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Mr. Gasket – High Performance Thermostat (Part No.4365)

High Performance Thermostat

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$27.49
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 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
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Mr. Gasket – High Performance 180 Degree Thermostat for Increased Flow (Part No.4364)

High Performance 180 Degree Thermostat for Increased Flow

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$26.99
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 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
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Edelbrock – Performer Series Retainer (Qty 16) (Part No.9730)

Performer Series Retainer (Qty 16)

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$99.99
Product Features:
  • Use W/ Valve Springs Part #5703, 5794
  • Set of 16
  • 1.50 in. Outside Diameter
  • Steel Material
  • Black Oxide Finish
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Mr. Gasket – Super Intake Manifold Bolts (Part No.6081)

Super Intake Manifold Bolts

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$38.99
These grade 5 hex head bolts are black coated plated for protection and appearance. Hardened flat washers provide uniform torque and prevent galling on aluminum manifolds.

Product Features:
  • Assures Accurate Torque App
  • Prevents Galling Manifold
  • Grade 5 Material
  • Black Oxide Coasted
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Mr. Gasket – Intake Manifold Bolts (Part No.957G)

Intake Manifold Bolts

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$25.99
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
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Edelbrock – Performer EPS Intake Manifold for 1955-86 Small-Block Chevy, Polished Finish (Part No.27011)

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

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$504.99


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

C-357-B Triple-Deuce Manifold for S/B Chevy 4-Bolt Carb Pattern

from

$473.99
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)
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1970 GMC K25/K2500 Pickup Performance Engines

Maybe you’re in the middle of a full rebuild of that 1970 GMC K25/K2500 Pickup. Maybe you just need a couple of Performance Engines. Either way, Advance Auto Parts has 92 different Performance Engines in our inventory ranging from $7.99 to $1,009.99. That means you can find the exact parts or products you need to keep that 1970 GMC K25/K2500 Pickup running smoothly.

Performance Engines are only as good as their brand. We stock 7 different brands to make sure you have plenty of trusted parts to choose from for your 1970 GMC K25/K2500 Pickup. Mr. Gasket, Edelbrock, and FEL-PRO Performance are just some of the brands we stock. Search for brands you know or compare prices and reviews to help you decide!

We know you’ll find the perfect Performance Engines for your 1970 GMC K25/K2500 Pickup, but don’t take our word for it – read our customer ratings and reviews and buy with confidence. Out of the 672 reviews in this category, some of the top rated parts include Action Plus Water Pumps with 3.7 stars and Performer-Link Adjustable True-Roller Timing Chain Set with 3.3 stars.

So if you’re in the market for aftermarket Performance Engines to keep your 1970 GMC K25/K2500 Pickup rolling for years to come, look no further. Shop online and have your products shipped direct to your door, or pick up at the nearest Advance Auto Parts location today!

Performance Engines Brands To Make Your 1970 GMC K25/K2500 Pickup Last

Simple repair, complete replacement, or a full rebuild. No matter the job, your 1970 GMC K25/K2500 Pickup demands trusted brand parts and products to keep it running. Many trusted brands of Performance Engines make up Advance Auto Parts’ inventory, and all are ready to help make your K25/K2500 Pickup the best it can be. Be sure to browse some of our top Performance Engines brands and parts.

Popular B & M Performance Engines

We carry B & M parts in our stock across Performance Torque Converters categories, plus more. For a 1970 GMC K25/K2500 Pickup, our most popular B & M Performance Engines include:
Tork Master 2400
from $339.99
(1)
Tork Master 2400
Performance Torque Converters

Top 1970 GMC K25/K2500 Pickup Performance Engines from Mr. Gasket

Mr. Gasket products are another trusted brand when it comes to Performance Engines for your 1970 GMC K25/K2500 Pickup. Popular Mr. Gasket parts include:
High Performance 180 Degree Thermostat for Increased Flow
from $26.99
(20)
High Performance 180 Degree Thermostat for Increased Flow
Performance Engine Coolant Thermostats
Ultra-Seal Intake Manifold Gasket with Silicone Beading
from $31.99
(18)
Ultra-Seal Intake Manifold Gasket with Silicone Beading
Performance Engine Intake Manifold Gaskets
Intake Manifold Bolts
from $32.09
(5)
Intake Manifold Bolts
Performance Intake Manifold Hardware

FAQs for 1970 GMC K25/K2500 Pickup Performance Engines

What are the most purchased Performance Engines for the 1970 GMC K25/K2500 Pickup?

Out of 92 Performance Engines for the 1970 GMC K25/K2500 Pickup, the most popular in our inventory are:
Performer EPS Intake Manifold for 1955-86 Small-Block Chevy
from $195.99
(7)
Performer EPS Intake Manifold for 1955-86 Small-Block Chevy
Performance Intake Manifolds
Cylinder Head Gasket: Multi-Layered Steel, Without Head Bolts
from $39.49
(1)
Cylinder Head Gasket: Multi-Layered Steel, Without Head Bolts
Performance Engine Cylinder Head Gaskets
Lower Intake Manifold Gasket Set: 9 Piece Set
from $27.49
This product is not rated
Lower Intake Manifold Gasket Set: 9 Piece Set
Performance Engine Intake Manifold Gaskets

What are the top-rated 1970 GMC K25/K2500 Pickup Performance Engines?

Top-rated Performance Engines for your 1970 GMC K25/K2500 Pickup based on customer reviews/ratings are:
Action Plus Water Pumps
from $215.99
(3)
Action Plus Water Pumps
“I bought this item for my 1979 Camaro SBC for Street/Strip application. Water pump weighs 4 LBS less than factory, comes with its own cork gaskets. N”
Performer-Link Adjustable True-Roller Timing Chain Set
from $62.99
(3)
Performer-Link Adjustable True-Roller Timing Chain Set
“Bolted right on, instructions were spot on. Great purchase. Hard to go wrong with an Edelbrock company product”
Engine Crankshaft Seal Kit
from $21.49
(2)
Engine Crankshaft Seal Kit
“Seals properly”