1968 GMC K35/K3500 Pickup Performance Engines

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Keep Your 1968 GMC K35/K3500 Pickup 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 1968 GMC K35/K3500 Pickup looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Performance Engine Intake Manifold Gaskets, Performance Engine Cylinder Head 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 B & M, FEL-PRO Performance, and Competition Cams. For example, B & M Performance Engines start at just $399.99 with an average 4.3 star rating. FEL-PRO Performance and Competition Cams offer similar pricing and quality, backed by strong customer feedback. With over 167 reviews and a solid 4.4 star average, you can shop with confidence knowing other GMC K35/K3500 Pickup owners approve.

Competitive Prices and Extensive Inventory

The average price for a 1968 GMC K35/K3500 Pickup Performance Engine at Advance Auto Parts is around $281.52, with a range that starts at $10.39 and goes up to $1,623.99. With 95 options in stock from 7 trusted brands, finding the right fit is easy. Popular picks like FEL-PRO Performance Engine Intake Manifold Gasket Set, 1212, Mr. Gasket O-Ring Style Chrome Water Neck, 2557, and Mr. Gasket Intake Gasket, 121 start at just $27.99 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 Air Filters and Performance Fuel Systems. At Advance Auto Parts, we’re here to help you keep your 1968 GMC K35/K3500 Pickup in peak condition, inside and out.

Essential 1968 GMC K35/K3500 Pickup Performance Engines

Mr. Gasket – "Mr. Gasket Intake Gasket Set – Big Block Chevy, 396-454, Gen Iv, 1965-1990 – Rect Stock Port 1.75"" X 2.5"", 110" (Part No.110)

"Mr. Gasket Intake Gasket Set - Big Block Chevy, 396-454, Gen Iv, 1965-1990 - Rect Stock Port 1.75"" X 2.5"", 110"

from

$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. Comes complete with front & rear manifold end seals. For original equipment replacement, high performance street, drag race and oval track.
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Spectre – Spectre Chevrolet Small Block V8 Harmonic Balancer Bolt Kit, 4699 (Part No.4699)

Spectre Chevrolet Small Block V8 Harmonic Balancer Bolt Kit, 4699

from

$8.99
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.
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Mr. Gasket – Mr. Gasket Water Outlet Gasket, 740C (Part No.740C)

Mr. Gasket Water Outlet Gasket, 740C

from

$10.39
This is a high quality gasket that will seal that leaking water neck, and provide you with years of service. This gasket works well in all applications.
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Competition Cams – Competition Cams Xtreme Energy 206/212 Hydraulic Flat Cam and Lifter Kit, CL12-230-2 (Part No.CL12-230-2)

Competition Cams Xtreme Energy 206/212 Hydraulic Flat Cam and Lifter Kit, CL12-230-2

from

$305.99
Featuring a quicker valve opening, the Xtreme Energy camshaft profile provides increased responsiveness and more area under the lift curve than older, slower grinds. Designed to increase performance without sacrificing driveability and creature comforts.
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Edelbrock – Edelbrock Sure Seat Valve Springs for Big-Block Chevy 396-402-427-454 V8, 5862 (Part No.5862)

Edelbrock Sure Seat Valve Springs for Big-Block Chevy 396-402-427-454 V8, 5862

from

$85.99
Complete kit includes retainers and locks. Springs made of highest quality spring wire. Springs precision wound to close tolerances. Includes superior quality steel retainers. Includes 7 degree heat-treated valve stem locks. Retainers and locks black oxide coated. Non-Rotator style: Dyno tested and street proven. Great match to Edelbrock camshaft kit.
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Competition Cams – "Competition Cams SUPER VALVE LOCKS, 3/8"" 1 ST, 612-16" (Part No.612-16)

"Competition Cams SUPER VALVE LOCKS, 3/8"" 1 ST, 612-16"

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$43.99
Inside tang-to-taper relationship held tightly for repeatable valve spring installed heights
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FEL-PRO Performance – FEL-PRO Performance Steel core laminate Engine Cylinder Head Gasket, 1010 (Part No.1010)

FEL-PRO Performance Steel core laminate Engine Cylinder Head Gasket, 1010

from

$51.99
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.
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Mr. Gasket – Mr. Gasket Cylinder Head Dowel Pins, 4377 (Part No.4377)

Mr. Gasket Cylinder Head Dowel Pins, 4377

from

$21.69
Big Block Chevrolet tubular head dowel, .638/.639 inch o.d. (outer diameter) by 1/2 inch. Packaged two per set. These hard to find dowel pins are precision machined then case hardened for accurate alignment in engine assembly.
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Competition Cams – Competition Cams Magnum/Oval Track 244/244 Hydraulic Flat Cam K-Kit, K11-213-3 (Part No.K11-213-3)

Competition Cams Magnum/Oval Track 244/244 Hydraulic Flat Cam K-Kit, K11-213-3

from

$698.99
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.
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Mr. Gasket – Mr. Gasket Ultra Seal: Oil Pan Gasket, 5884 (Part No.5884)

Mr. Gasket Ultra Seal: Oil Pan Gasket, 5884

from

$44.39
Manufactured from cellulose/nitrile composition gasket material. A black latex rubber coating is applied to outside of gasket to help seal minor oil pan rail irregularities and eliminate the possibility of oil leakage. Provides excellent sealing and durability. Complete with molded rubber front/rear oil pan seals where applicable. For original equipment replacement, high performance street, drag race and oval track.
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Mr. Gasket – Mr. Gasket High Performance Thermostat – 160 Degree Brass & Copper, 4363 (Part No.4363)

Mr. Gasket High Performance Thermostat - 160 Degree Brass & Copper, 4363

from

$31.99
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.
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Competition Cams – Competition Cams Xtreme Energy 212/218 Hydraulic Roller Cam, 11-413-8 (Part No.11-413-8)

Competition Cams Xtreme Energy 212/218 Hydraulic Roller Cam, 11-413-8

from

$577.99
Featuring a quicker valve opening, the Xtreme Energy camshaft profile provides increased responsiveness and more area under the lift curve than older, slower grinds. Designed to increase performance without sacrificing driveability and creature comforts.
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Edelbrock – Edelbrock RPM Air-Gap Dual Quad Big Block Chevy Intake Manifold, 7520 (Part No.7520)

Edelbrock RPM Air-Gap Dual Quad Big Block Chevy Intake Manifold, 7520

from

$595.99
Air gap cooler and denser mixture for more power. Street and high performance compatible. Available in cast, polished and endurashine finish.
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Edelbrock – Edelbrock Performer-Link Adjustable True-Roller Timing Chain Set, 7809 (Part No.7809)

Edelbrock Performer-Link Adjustable True-Roller Timing Chain Set, 7809

from

$64.99
Edelbrock part No: 7809 Performer-Link timing chain is for use with Edelbrock or stock cams. They have a solid-bushing chain for a true bearing surface that rolls with the sprockets, eliminating chain stretch. Cam sprockets are made from 35,000 psi tensile strength cast iron. Crank sprockets are made from billet SAE-1144 steel and induction heat treated. Four Performer-Link sets are stock replacement parts and 50-state legal (see listings in bold type). All other sets have three keyway setting points to ensure accurate timing selection for early or late-model vehicles. Performer-Link timing sets are not for use above 6500 rpm. Performer roller chain sets are engineered to operate up to 6500 rpm. Never hammer directly on chain or sprockets. You can crack the hardened links and pins and cause early failures. Use a sleeve for installations that require hammering, a brass drift punch may be used if you carefully alternate blows on either side of the sprocket to avoid cocking. Never stretch the chain with a screwdriver. Check for clearance between the timing chain and block and between the chain and front cover before reassembly. Be sure that both cam and crank sprockets are exactly in line with each other. Misalignment can cause chain to break.
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B & M – B & M Holeshot 3000, 20413 (Part No.20413)

B & M Holeshot 3000, 20413

from

$921.99
This Holeshot 3000 fits 1965-91 GM TH400, 425, 375 and 1968-81 TH350, 375B (not 350C). Holeshot torque converters are for serious-minded performance enthusiasts and offer additional strength and durability features not found in our Tork Master or Traveler series of converters. The Holeshot 3000 converter is an excellent choice for vehicles with some performance engine modifications, particularly big cams that tend to reduce low-end power and torque. The higher stall speed of this converter will launch the car in a higher rpm range where more torque is readily available, resulting in quicker acceleration. Holeshot converters feature furnace brazed impeller fins and turbine, new precision alloy impeller hub and new heavy duty needle bearings. Other features include fully balanced and pressure tested by expert technicians. If your vehicle is equipped with a plate type nitrous system or supercharger, please refer to the Nitrous Holeshot line of converters. Notes: 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. Higher stall converters can generate more heat, so we highly recommend adding a transmission cooler. This converter is Not recommended for supercharged, plate-type nitrous oxide or trans-brake applications. The product images shown are for illustration purposes only and may not be an exact representation of the product. Has both 10.75 and 11.50-inch bolt circles.
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B & M – B & M Torque Converter, Nitrous Holeshot 3600, 20482 (Part No.20482)

B & M Torque Converter, Nitrous Holeshot 3600, 20482

from

$799.99
B&M Nitrous HoleShot 3600 stall for 1965-91 TH400, 425 and 1968-81 TH350, 375 (Not TH350C) transmissions is an excellent choice for vehicles with engine modifications, particularly big cams that tend to reduce low end power and torque. The higher stall speed of this converter will launch the car in a higher rpm range where more torque is readily available, resulting in quicker acceleration. Nitrous Holeshot converters feature furnace brazed impeller and turbine, new precision steel alloy pump drive tube, new heavy duty needle bearings between the stator and impeller (not a thrust washer) and needle bearings between the stator and turbine. Other features include dual pattern 10.75 and 11.50-inch bolt circle, a new turbine hub, new springs and rollers in the stator and anti-balloon plates. The anti-balloon plates will allow these converters to stand up to the instant horsepower that a nitrous plate system delivers. 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. These are serious converters for serious performance street cars. To prevent contamination left from worn parts being circulated in your new components causing premature wear, we strongly recommend protecting your investment by adding a B&M transmission cooler with all new transmission installations. Listed converters are NOT to be used in trans-brake applications. Not for use in trans-brake applications.
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Edelbrock – Edelbrock Performer Big-Block Chevy Oval Port Hydraulic Flat Tappet Cam, 60499 (Part No.60499)

Edelbrock Performer Big-Block Chevy Oval Port Hydraulic Flat Tappet Cam, 60499

from

$1367.99
Edelbrock Performer Big-Block Chevy Oval Port Hydraulic Flat Tappet Cam, 60499.
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Edelbrock – Edelbrock RPM Big-Block Chevy Rectangular Port Cylinder Head Hydraulic Roller Cam, 60555 (Part No.60555)

Edelbrock RPM Big-Block Chevy Rectangular Port Cylinder Head Hydraulic Roller Cam, 60555

from

$1394.99
Edelbrock RPM Big-Block Chevy Rectangular Port Cylinder Head Hydraulic Roller Cam, 60555.
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Mr. Gasket – Mr. Gasket Timing Cover Seal, 17 (Part No.17)

Mr. Gasket Timing Cover Seal, 17

from

$37.09
If you are changing your camshaft or replacing the timing set, make sure to replace this seal at the same time! Made from Nitrile rubber.
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Edelbrock – Edelbrock Replacement Timing Cover Gasket, 4243 (Part No.4243)

Edelbrock Replacement Timing Cover Gasket, 4243

from

$44.99
Edelbrock part No: 4243 Replacement Gasket Kit Edelbrock Two-Piece Small-Block Chevy timing covers.
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Mr. Gasket – Mr. Gasket Ultra Seal: Valve Cover Gasket Set, 5862 (Part No.5862)

Mr. Gasket Ultra Seal: Valve Cover Gasket Set, 5862

from

$44.39
These are high quality gaskets that works well on those hard to seal applications. The low density fiber & rubber blend gasket material seals those minor head imperfections with a low clamp force. At .187 inch, the extra thickness can also offer slightly more clearance for roller rockers. Ideal for all those high performance applications where you take the valve covers off and on a lot, and sticking is a problem.brbrFits all 1965-2000 Chevy Big Blocks: 366,396,402,427,454 including GM (General Motors) Gen VI Crate Engines like the 502 and 572.
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FEL-PRO Performance – FEL-PRO Performance PERFORMANCE VALVE COVER GASKET SET, 1640 (Part No.1640)

FEL-PRO Performance PERFORMANCE VALVE COVER GASKET SET, 1640

from

$22.99
Fel-Pro Performance Gaskets deliver reliable sealing under grueling racing conditions
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Mr. Gasket – Mr. Gasket O-Ring Style Chrome Water Neck, 2557 (Part No.2557)

Mr. Gasket O-Ring Style Chrome Water Neck, 2557

from

$33.59
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.
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Mr. Gasket – Mr. Gasket Precision Chrome Water Neck With O-Ring Style Seal For Leak-Free Operation, 2661 (Part No.2661)

Mr. Gasket Precision Chrome Water Neck With O-Ring Style Seal For Leak-Free Operation, 2661

from

$32.99
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.
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Edelbrock – Edelbrock Performer-Plus Hydraulic Flat Tappet Lifter Set, 9738 (Part No.9738)

Edelbrock Performer-Plus Hydraulic Flat Tappet Lifter Set, 9738

from

$134.99
Edelbrock part No: 9738 Performer-Plus lifter set for S/B & B/B Chevy is designed for use with Edelbrock Performer-Plus or equivalent camshafts. Sold in complete sets.
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Edelbrock – Edelbrock Water Pump Cartridge for Small-Block Chevy (Race Style), 8827 (Part No.8827)

Edelbrock Water Pump Cartridge for Small-Block Chevy (Race Style), 8827

from

$469.99
Edelbrock Water Pump Cartridge for Small-Block Chevy (Race Style), 8827.
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Edelbrock – Edelbrock Engine Water Pump Gasket Set, 7251 (Part No.7251)

Edelbrock Engine Water Pump Gasket Set, 7251

from

$14.99
Edelbrock No: 7251 Engine Water Pump Gasket Set Chevy Small Block. Is it time to rebuild your Edelbrock mechanical water pump- No problem- these Edelbrock water pump gaskets will keep your water pump leak-free. They are manufactured from quality materials and can be installed easily without any modifications
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Edelbrock – Edelbrock Water Pump for Small-Block Chevy in Polished Finish (Short), 8820 (Part No.8820)

Edelbrock Water Pump for Small-Block Chevy in Polished Finish (Short), 8820

from

$499.99
Edelbrock Water Pump for Small-Block Chevy in Polished Finish (Short), 8820.
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Most Popular Performance Engine Intake Manifold Gaskets for 1968 GMC K35/K3500 Pickups

Enhance your 1968 GMC K35/K3500 Pickup with one of the 7 Performance Engine Intake Manifold Gaskets we have in stock, starting at just $27.99.

FEL-PRO Performance – FEL-PRO Performance Engine Intake Manifold Gasket Set, 1212 (Part No.1212)

FEL-PRO Performance Engine Intake Manifold Gasket Set, 1212

from

$27.99
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.
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Mr. Gasket – Mr. Gasket Intake Gasket, 121 (Part No.121)

Mr. Gasket Intake Gasket, 121

from

$33.59
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.
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Edelbrock – Edelbrock Intake Manifold Gasket, 7203 (Part No.7203)

Edelbrock Intake Manifold Gasket, 7203

from

$34.99
Edelbrock part No: 7203 Intake Gaskets for 1965-1990 & later Mark IV, Oval port 396-402-454 Big-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 Micropore technology does not use solvents making our gaskets environmentally friendly. Impervious to most chemicals, this synthetic fiber composite provides a high recovery under load. This means that when compressed, the gasket will conform to any imperfections on the sealing surface even using lower flange pressures. A nitrile bead around each port opening makes the seal even better.
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Mr. Gasket – Mr. Gasket Ultra Seal: Intake Gasket, 5828 (Part No.5828)

Mr. Gasket Ultra Seal: Intake Gasket, 5828

from

$49.99
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 is required. For OE replacement, high-performance street, drag race, and oval track use. Includes manifold end seals and distributor gasket.
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Mr. Gasket – Mr. Gasket Ultra Seal: Intake Gasket, 5818 (Part No.5818)

Mr. Gasket Ultra Seal: Intake Gasket, 5818

from

$59.39
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.
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Mr. Gasket – "Mr. Gasket Intake Gasket Set – Big Block Chevy, 396-454, Gen Iv, 1965-1990 – Rect Stock Port 1.75"" X 2.5"", 110" (Part No.110)

"Mr. Gasket Intake Gasket Set - Big Block Chevy, 396-454, Gen Iv, 1965-1990 - Rect Stock Port 1.75"" X 2.5"", 110"

from

$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. Comes complete with front & rear manifold end seals. For original equipment replacement, high performance street, drag race and oval track.
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Edelbrock – Edelbrock Intake Manifold Gasket, 7202 (Part No.7202)

Edelbrock Intake Manifold Gasket, 7202

from

$28.99
Edelbrock part No: 7202 Intake Gaskets for 1991 & later Gen V & VI, Rectangular port 454 Big-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 Micropore technology does not use solvents making our gaskets environmentally friendly. Impervious to most chemicals, this synthetic fiber composite provides a high recovery under load. This means that when compressed, the gasket will conform to any imperfections on the sealing surface even using lower flange pressures. A nitrile bead around each port opening makes the seal even better.
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Best-Selling 1968 GMC K35/K3500 Pickup Performance Engine Cylinder Head Gaskets

Upgrade your K35/K3500 Pickup with one of our 3 best-selling Performance Engine Cylinder Head Gaskets, earning an average 5 stars rating across 1 reviews.

FEL-PRO Performance – FEL-PRO Performance Stainless steel core laminate Engine Cylinder Head Gasket, 1037 (Part No.1037)

FEL-PRO Performance Stainless steel core laminate Engine Cylinder Head Gasket, 1037

from

$64.99
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.
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Mr. Gasket – Mr. Gasket Head Gasket, 1131G (Part No.1131G)

Mr. Gasket Head Gasket, 1131G

from

$40.29
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.
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FEL-PRO Performance – FEL-PRO Performance Stainless steel core laminate Engine Cylinder Head Gasket, 1047 (Part No.1047)

FEL-PRO Performance Stainless steel core laminate Engine Cylinder Head Gasket, 1047

from

$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.
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Top-Quality Performance Intake Manifolds for 1968 GMC K35/K3500 Pickups

Choose a high-quality OEM or aftermarket Performance Intake Manifold for GMC K35/K3500 Pickups and enjoy top-notch performance from $425.99.

Edelbrock – Edelbrock RPM Air-Gap Big Block Chevy 2-O Intake Manifold, 7561 (Part No.7561)

Edelbrock RPM Air-Gap Big Block Chevy 2-O Intake Manifold, 7561

from

$460.99
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. Retains good throttle response and acceleration. Larger plenum and runners maximize other upgrades. Edelbrock total power package maximizes gains. Available in cast, polished or endurashine finish.
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Edelbrock – Edelbrock Street Tunnel Ram Big Block Chevy 2-O Intake Manifold, 7115 (Part No.7115)

Edelbrock Street Tunnel Ram Big Block Chevy 2-O Intake Manifold, 7115

from

$895.99
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.
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Edelbrock – Edelbrock RPM Air-Gap Dual Quad Big Block Chevy Intake Manifold, 7520 (Part No.7520)

Edelbrock RPM Air-Gap Dual Quad Big Block Chevy Intake Manifold, 7520

from

$595.99
Air gap cooler and denser mixture for more power. Street and high performance compatible. Available in cast, polished and endurashine finish.
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Edelbrock – Edelbrock Performer 2-O Intake Manifold for 1965-90 Big-Block Chevy, Black Finish, 21613 (Part No.21613)

Edelbrock Performer 2-O Intake Manifold for 1965-90 Big-Block Chevy, Black Finish, 21613

from

$519.99
Edelbrock Performer 2-O Intake Manifold for 1965-90 Big-Block Chevy, Black Finish, 21613.
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Weiand – Weiand Stealth Intake Manifold, 8019 (Part No.8019)

Weiand Stealth Intake Manifold, 8019

from

$456.99
Weiand Stealth Intake Manifold, 8019.
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Weiand – Weiand Stealth Intake Manifold, 8018 (Part No.8018)

Weiand Stealth Intake Manifold, 8018

from

$449.99
Weiand Stealth Intake Manifold, 8018.
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Holley – Holley Intake Manifold, 300-4 (Part No.300-4)

Holley Intake Manifold, 300-4

from

$425.99
Holley Intake Manifolds feature a cast aluminum construction and have a long tradition of being one of the best products on the market. Review the information below for Holley intake specifications.
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Our Top Pick for a 1968 GMC K35/K3500 Pickup Performance Water Outlet Gasket

Invest in a durable Performance Water Outlet Gasket for your 1968 GMC, knowing you’re getting trusted brands and expert craftsmanship.

Mr. Gasket – Mr. Gasket Water Outlet Gasket, 740C (Part No.740C)

Mr. Gasket Water Outlet Gasket, 740C

from

$10.39
This is a high quality gasket that will seal that leaking water neck, and provide you with years of service. This gasket works well in all applications.
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Top-Rated Performance Water Outlets for 1968 GMC K35/K3500 Pickups

Make a smart move for your 1968 GMC K35/K3500 Pickup with products all priced from $32.99 to $33.59.

Mr. Gasket – Mr. Gasket Precision Chrome Water Neck With O-Ring Style Seal For Leak-Free Operation, 2661 (Part No.2661)

Mr. Gasket Precision Chrome Water Neck With O-Ring Style Seal For Leak-Free Operation, 2661

from

$32.99
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.
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Mr. Gasket – Mr. Gasket O-Ring Style Chrome Water Neck, 2557 (Part No.2557)

Mr. Gasket O-Ring Style Chrome Water Neck, 2557

from

$33.59
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.
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Top-Rated Performance Engine Brands For Your 1968 GMC K35/K3500 Pickup

When it comes to finding the perfect Performance Engine for your 1968 GMC K35/K3500 Pickup, Advance Auto Parts has you covered with a wide selection of high-quality OEM and aftermarket options from 7 trusted brands. We carry the most popular Performance Engine brands including B & M, FEL-PRO Performance, and Competition Cams, and more, all known for their exceptional customer ratings (average brand rating of 4.3 stars) and competitive prices, as low as $64.99. Purchasing a Performance Engine from us here at Advance Auto Parts is a smart move for both you and your 1968 GMC K35/K3500 Pickup, providing peace of mind with parts that meet or exceed OEM standards.

Popular B & M 1968 GMC K35/K3500 Pickup Performance Engines

If you’re looking for a top-quality Performance Engine for your 1968 GMC K35/K3500 Pickup, Advance Auto Parts has exactly what you need with our selection of B & M Performance Engines. We have 2 B & M Performance Engines in stock for this fitment, all known for their durability and precision fit. With prices starting at just $399.99 and an average cost of $492.49, you’ll find the perfect Performance Engine for your needs and budget. B & M Performance Engines for the 1968 GMC K35/K3500 Pickup come highly rated, with over 2 customer reviews and an impressive average rating of 4.3 stars. Choosing a B & M Performance Engine from Advance Auto Parts is a smart move to ensure quality and value for your vehicle.
B & M Tork Master 3000, 20402
from $584.99
(1)
B & M Tork Master 3000, 20402
“good parts and very strong”
B & M Tork Master 2400, 20404
from $399.99
(1)
B & M Tork Master 2400, 20404
“The B&M 2400 stall converter was a great choice for my application. It works well on the street and track, increased performance by leaps and bounds. ”

Top-Quality FEL-PRO Performance 1968 GMC K35/K3500 Pickup Performance Engines

For those in search of a high-quality Performance Engine for their 1968 GMC K35/K3500 Pickup, Advance Auto Parts offers a great selection of FEL-PRO Performance Performance Engines. With 1 FEL-PRO Performance 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 $64.99, giving you a range of options to suit your budget. Backed by over 1 customer ratings and an average rating of 4.2 stars, FEL-PRO Performance Performance Engines provide both reliability and excellent performance. Choosing a FEL-PRO Performance Performance Engine from Advance Auto Parts is a smart investment in your vehicle’s performance and longevity.
FEL-PRO Performance Stainless steel core laminate Engine Cylinder Head Gasket, 1037
from $64.99
(1)
FEL-PRO Performance Stainless steel core laminate Engine Cylinder Head Gasket, 1037
“Have not had a chance to install, but have used FelPro in the past with good results.”

FAQs for 1968 GMC K35/K3500 Pickup Performance Engines

What are the best-selling Performance Engines for 1968 GMC K35/K3500 Pickups?

Out of 95 Performance Engines that fit 1968 GMC K35/K3500 Pickups, the following parts are the top sellers:

What’s the price range for 1968 GMC K35/K3500 Pickup Performance Engines?

The prices of Performance Engines for the 1968 GMC K35/K3500 Pickup range from $10.39 up to $1,623.99 for the most premium parts.

What is the average price of a Performance Engine for a 1968 GMC K35/K3500 Pickup?

The average price for Performance Engines for the 1968 GMC K35/K3500 Pickup is $281.52. 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 K35/K3500 Pickup model years?

Yes, we carry Performance Engines for 5 model years of GMC K35/K3500 Pickups between 1969 and 1974. The following model years are the most popular for Performance Engine purchases: 1974, 1973, 1972, 1971, 1970, and 1969.

What are the cheapest Performance Engines for my 1968 GMC K35/K3500 Pickup?

The cheapest 1968 GMC K35/K3500 Pickup Performance Engines we carry are:

Does Advance Auto Parts sell Performance Engines for any other 1968 GMC models?

What are the top-rated Performance Engines that fit the 1968 GMC K35/K3500 Pickup?

Based on 167 reviews by customers, our 1968 GMC K35/K3500 Pickup Performance Engines have an average customer rating of 4.4 stars. These are the highest-rated categories of Performance Engines for the 1968 GMC K35/K3500 Pickup and their top-rated products:

What types of Performance Engines do you sell for my 1968 GMC K35/K3500 Pickup?

As of 8/2/26, these are some of the most in-demand types of Performance Engines for a 1968 GMC K35/K3500 Pickup:

Can I get help with 1968 GMC K35/K3500 Pickup 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 K35/K3500 Pickup Performance Engines?

Advance Auto Parts keeps returns simple. For new GMC K35/K3500 Pickup Performance Engines and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.