GMC K15 Performance Engines

Your One-Stop Shop For Trusted GMC K15 Performance Engines

If you’re in search of GMC K15 Performance Engines aftermarket or OEM parts, consider your search over! Advance Auto Parts carries 218 Performance Engines from top brands with prices ranging from $7.99 to $1,201.99.

Beyond great prices, we stock trusted brands manufacturing all types of Performance Engines for your GMC K15.

And don’t forget to read customer reviews across all Performance Engines categories in our catalog. Buy with confidence by leveraging past customer experiences of our aftermarket and OEM parts.

At Advance Auto Parts, we don’t think top quality Performance Engines have to cost top dollar, and we prove it. Browse our top GMC K15 Performance Engines below, order online to ship to your home, or head into your nearest Advance Auto Parts location to get started.

Please Select your Vehicle to See Exact Fit Parts

Essential GMC K15 Performance Engines

Mr. Gasket – Engine Sealing (Part No.6560)

Engine Sealing

from

$79.99
Manufactured from cellulose and 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 OE replacement, high performance street, drag race and oval track.

Product Features:
  • Made of high temp silicone or nitrile blend rubber
  • Torque limiters to prevent over tightening
  • One piece molded rubber
  • Fits left and right hand dipsticks
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Mr. Gasket – Premium Quality Thermostat Gasket with Solid Aluminum Carrier (Part No.738G)

Premium Quality Thermostat Gasket with Solid Aluminum Carrier

from

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

W3 Engine Kit Sb Chevy

from

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

Rear Main Seal Gasket

from

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

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

from

$54.99
Raised 1 Piece Guide Plate Set Chevrolet Big Block With 3/8" Pushrod 7/16" Stud

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

Lower Intake Manifold Gasket Set: 9 Piece Set

from

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

O-Ring Style Chrome Water Neck

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

Cam Bolt Lock Plate Kit

from

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

Ultra Seal: Harmonic Balancer Bolt/Washer Kit

from

$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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B & M – Holeshot 3600 (Part No.20425)

Holeshot 3600

from

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

Action Plus Water Pumps

from

$255.99
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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Mr. Gasket – Intake Bolt Kit (Part No.5003)

Intake Bolt Kit

from

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

Performance Cylinder Head Gasket

from

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

RPM Small-Block Chevy Cylinder Head SBC 70cc Hydraulic Flat Tappet Cam

from

$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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FEL-PRO Performance – Engine Valve Cover Gasket Set (Part No.1603)

Engine Valve Cover Gasket Set

from

$31.99
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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Competition Cams – (16) Positive Stop PTFE Valve Seals: for 3/8" Valves and .530" Guides (Part No.505-16)

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

from

$33.99
COMP Cams offers a complete line of valve stem seals, from the umbrella seals to the positive-stop Teflon seal. These seals are a must to keep unwanted oil from entering the combustion chamber through the clearance in the valve guides. The umbrella seal is normally used when a larger-than-stock diameter spring is used, in the case of a double spring, the positive-stop Teflon seal is used. The umbrella seals require no machining, but with the Teflon seal it is necessary to disassemble the heads and machine the top of the guide with a special .530 diameter cutter. Whenever you are planning an engine overhaul or a cam change, don’t forget the valve seals.

Product Features:
  • Work with .530″ guides and 3/8″ valve stem diameter
  • Valve stem oil seals keep unwanted oil from entering the combustion chamber
  • Several different types of valve seals are offered
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Weiand – Stealth; Intake Manifold (Part No.8018)

Stealth; Intake Manifold

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

Torker-Plus Camshaft Kit for Big-Block Chevy 396-427-454 V8

from

$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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Mr. Gasket – High Performance Thermostat (Part No.4365)

High Performance Thermostat

from

$32.49
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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Competition Cams – Magnum 8.280" and 9.250" Long, .080" Wall, 3/8" Diameter Pushrod Set (Part No.7154-16)

Magnum 8.280" and 9.250" Long, .080" Wall, 3/8" Diameter Pushrod Set

from

$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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Competition Cams – Ultra Pro Magnum Rocker Arm Set with 1.6 Ratio for Chevrolet SBC with 7/16" Stud (Part No.1605-16)

Ultra Pro Magnum Rocker Arm Set with 1.6 Ratio for Chevrolet SBC with 7/16" Stud

from

$476.99
Ultra Pro Magnum Rocker Arm Set with 1.6 Ratio for Chevrolet SBC with 7/16" Stud

Edelbrock – RPM-LINK Big-Block Chevy Timing Chain (Part No.7334)

RPM-LINK Big-Block Chevy Timing Chain

from

$223.99


Product Features:
  • Dial-In Your Camshaft With Ease
  • Made From Induction Hardened Billet Steel
  • Solid Bushing Chain Resists Stretching
  • Billet SAE-1144 Steel Crank Sprockets
  • Multiple Keyways
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Competition Cams – Tool Steel 10 Degree Retainer Set Of 16 For All Valves With 1.250" O.D. Springs (Part No.1750-16)

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

from

$272.99
Tool Steel 10 Degree Retainer Set Of 16 For All Valves With 1.250" O.D. Springs

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

Cylinder Head Dowel Pins

from

$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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Performance Engines Brands You Can Trust For Your GMC K15

8 trusted brands of Performance Engines line our shelves, ready to help keep your GMC K15 running smooth. Below are some of the most popular brands and their top Performance Engines offerings:

Popular B & M Performance Engines

B & M products for the GMC K15 span several categories. Some of the highest-rated B & M Performance Engines that will fit your GMC K15 are:
Tork Master 2400
from $382.99
(1)
Tork Master 2400
Performance Torque Converters
Tork Master 3000
from $562.99
(1)
Tork Master 3000
Performance Torque Converters

Top GMC K15 Performance Engines from Mr. Gasket

Your GMC K15 will be purring again thanks to Mr. Gasket brand Performance Engines available for online order or in-store pick up. Popular Mr. Gasket parts include:
High Performance 180 Degree Thermostat for Increased Flow
from $29.99
(20)
High Performance 180 Degree Thermostat for Increased Flow
Performance Engine Coolant Thermostats
Ultra-Seal Intake Manifold Gasket with Silicone Beading
from $35.49
(18)
Ultra-Seal Intake Manifold Gasket with Silicone Beading
Performance Engine Intake Manifold Gaskets
High Performance Thermostat - 160 Degree Brass & Copper
from $29.99
(12)
High Performance Thermostat – 160 Degree Brass & Copper
Performance Engine Coolant Thermostats

Most Purchased GMC K15 Performance Engines from Edelbrock

When you buy the most frequently purchased Edelbrock brand Performance Engines, you can be confident it will be the right part for your GMC K15. Here are the Edelbrock Performance Engines Advanced Auto customers buy the most:
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
Ultra-Seal Intake Manifold Gasket with Silicone Beading
from $35.49
(18)
Ultra-Seal Intake Manifold Gasket with Silicone Beading
Performance Engine Intake Manifold Gaskets
High Performance 180 Degree Thermostat for Increased Flow
from $29.99
(20)
High Performance 180 Degree Thermostat for Increased Flow
Performance Engine Coolant Thermostats

FAQs for GMC K15 Performance Engines

What are the most purchased Performance Engines for the GMC K15?

Out of 218 Performance Engines for the GMC K15, 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
Ultra Seal: Harmonic Balancer Bolt/Washer Kit
from $15.49
(12)
Ultra Seal: Harmonic Balancer Bolt/Washer Kit
Performance Engine Harmonic Balancers

What are the top-rated GMC K15 Performance Engines?

Top-rated Performance Engines for your GMC K15 based on customer reviews/ratings are:
Intake Manifold Gasket for 1958-1986 Small-Block Chevy
from $28.99
(12)
Intake Manifold Gasket for 1958-1986 Small-Block Chevy
“Edlebrock gasket is what I needed, they had in stock! Ordered online and picked up at the counter”
Ultra Seal: Intake Gasket
from $58.99
(5)
Ultra Seal: Intake Gasket
“I bought this to replace the CV Axle because the inner boot on my old axle was flinging grease. This part was a perfect replacement for my 2008 Honda ”