Chevrolet K20 Performance Engines

Your One-Stop Shop For Trusted Chevrolet K20 Performance Engines

If you’re in search of Chevrolet K20 Performance Engines aftermarket or OEM parts, consider your search over! Advance Auto Parts carries 153 Performance Engines from top brands with prices ranging from $14.99 to $1,322.99.

Beyond great prices, we stock trusted brands manufacturing all types of Performance Engines for your Chevrolet K20. Of the 7 OEM and aftermarket parts brands we carry, some of the most popular are Mr. Gasket, Edelbrock, and FEL-PRO Performance.

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 Chevrolet K20 Performance Engines below, order online to ship to your home, or head into your nearest Advance Auto Parts location to get started.

Essential Chevrolet K20 Performance Engines

Mr. Gasket – Intake Manifold Bolt Set – Chevrolet Small Block – Socket Head 3/8"-16 X 1" Bolts & Washers (Part No.956G)

Intake Manifold Bolt Set - Chevrolet Small Block - Socket Head 3/8"-16 X 1" Bolts & Washers

from

$17.49
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 twelve (12) 3/8 inch-16 x 1 inch bolts & washers

Product Features:
  • Zinc plated to resist corrosion and provide a clean professional appearance
  • Made from Grade 5 steel for strength and durability
  • Flat washers provide uniform clamp load and prevent galling on aluminum intake manifolds
  • Allen (socket) Head
  • Zinc Plated For Protection
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B & M – Holeshot 3600 (Part No.20425)

Holeshot 3600

from

$825.99
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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Mr. Gasket – High Performance 180 Degree Thermostat for Increased Flow (Part No.4364)

High Performance 180 Degree Thermostat for Increased Flow

from

$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.9721)

Performer Series Retainer (Qty 16)

from

$95.99
Valve spring retainers for use OE cast iron heads. Superior quality heat-treated steel. Machined for strength with black oxide finish. Finish ensures rust and corrosion protection.

Product Features:
  • Valve Spring Retainers for Use OE Cast Iron Heads
  • Superior Quality Heat-Treated Steel
  • Machined for Strength with Black Oxide Finish
  • Finish Ensures Rust and Corrosion Protection
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Mr. Gasket – Valve Cover Gasket Set (Part No.585G)

Valve Cover Gasket Set

from

$29.49
Molded rubber gaskets are reusable, great for engines that require valve lash maintenance. These gaskets feature Nitrile material for long life, solid steel carrier for strength and rigidity. Incorporates compression limiters to prevent fastener over-tightening.

Product Features:
  • Features Nitrile Rubber Material For Long Life
  • Molded Rubber Gaskets Are Reusable
  • Ideal For Engine Requiring Valve Lash Maintenance
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Mr. Gasket – Ultra Seal: Cylinder Head Bolts (Part No.941G)

Ultra Seal: Cylinder Head Bolts

from

$73.99
These grade 8 alloy steel, longer length bolts are designed to compensate for thread length lost when using head bolt washers. This allows increased torque and clamping. Set of 16 does one cylinder head.

Product Features:
  • Cylinder Head Bolts
  • Longer-Than-Stock
  • High Quality Grade 8 Alloy
  • Increase Torque Settings
  • Higher Clamp Loads On Gasket
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Weiand – X-CELerator; Intake Manifold (Part No.7547-1)

X-CELerator; Intake Manifold

from

$259.99


Product Features:
  • 2000-6500 RPM Power Band
  • Single Plane/Open Plenum Design
  • No Provision For Divorced Or Hot Air Choke
  • Square Flange Carburetor Mounting
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Mr. Gasket – Ultra Seal: Intake Gasket (Part No.5818)

Ultra Seal: Intake Gasket

from

$48.49
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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Mr. Gasket – Engine Sealing (Part No.6560)

Engine Sealing

from

$499.99
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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Spectre – Throttle Body Injection Spacer (Part No.11252)

Throttle Body Injection Spacer

from

$94.99
Manufactured from high quality machine finished aluminum, Spectre’s Throttle Body Spacers are engineered to improve engine performance. By providing added volume to the intake manifold and directing air through a tapered internal constriction, this spacer utilizes the Venturi effect to increase the speed of air flowing into your intake manifold. Spectre has designed a number of kits to fit a wide range of specific applications. Each kit includes the necessary gaskets and hardware to bolt directly to the factory components, making installation quick and easy.

Product Features:
  • Includes the necessary gaskets and hardware to bolt directly to the factory components
  • Each kit is designed for the applications listed
  • Manufactured from high quality machine finished aluminum
  • Can be installed in less than an hour using common hand tools with no drilling or cutting required
  • Simple to install
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Mr. Gasket – Head Gasket (Part No.1130G)

Head Gasket

from

$32.99
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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Edelbrock – Water Pump Big-Block Chevy Standard/Long in Satin Finish (Part No.8851)

Water Pump Big-Block Chevy Standard/Long in Satin Finish

from

$381.99
Product Features:
  • Standard Impeller Rotation
  • 0.625 in. Pilot Shaft
  • 0.750 in. Ball/Ball Bearing
  • 7.3125 in. Block To Hub Height
  • Satin Finish
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Edelbrock – Performer Small-Block Chevy Cylinder Head 64cc Flat Tappet Polished (Part No.609019)

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

from

$927.99
The Edelbrock #609019 Performer cylinder head is designed for 302, 327, 350 and 400 cid small-block Chevy engines up to 1986. This cylinder head includes your choice of 64cc (In order to retain stock compression ratio on 1970 and earlier small-blocks) or
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Edelbrock – Performer-Link Adjustable True-Roller Timing Chain Set (Part No.7810)

Performer-Link Adjustable True-Roller Timing Chain Set

from

$74.99


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
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Edelbrock – Sure Seat Valve Springs for Ford 429/460 V8 1969-1987 (Part No.5767)

Sure Seat Valve Springs for Ford 429/460 V8 1969-1987

from

$111.99
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.

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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FEL-PRO Performance – Engine Crankshaft Seal Kit (Part No.2918)

Engine Crankshaft Seal Kit

from

$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 – Pushrod Set for S/B Chevy (Part No.9630)

Pushrod Set for S/B Chevy

from

$189.99


Product Features:
  • Case-Hardened Tubing
  • Welded Ends
  • 5/16 in. Diameter
  • Use with or without Hardened Steel Guideplates
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Competition Cams – Thumpr 243/257 Hydraulic Flat Cam and Lifter Kit for Chevrolet Big Block 396-454 (Part No.CL11-602-4)

Thumpr 243/257 Hydraulic Flat Cam and Lifter Kit for Chevrolet Big Block 396-454

from

$1322.99
BIG BLOCK CHEVY HYDRAULIC CAM AND LIFTER KIT – Big Mutha’ Thumpr: Street/strip, needs 9.5:1 compression, 2800+ stall, intake, gears and headers, very rough idle.

Product Features:
  • Cam and lifter kit for Big Block Chevy engines
  • CL-Kit includes cam, lifters, assembly lube, instructions and decals
  • HYDRAULIC – Big Mutha’ Thumpr: Street/strip, needs 9.5:1 compression, 2800+ stall, intake, gears and headers, very rough idle.
  • 295/312 Advertised Duration, 243/257 Duration @ .050″, .522″/.507″ Lift, 107 Lobe Separation
  • Valve spring upgrade required
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Mr. Gasket – Ultra Seal: Competition Screw-In Rocker Arm Studs (Part No.1075)

Ultra Seal: Competition Screw-In Rocker Arm Studs

from

$94.99
Mr. Gasket competition screw-in rocker arm studs are manufactured from heat treated black oxide coated Grade 8 steel. Ideal for high performance street and race applications.

Product Features:
  • Black Oxide Coated Grade 8 Steel
  • Kit Contains 16 Studs
  • Easy To Install
  • Heat Treated Steel
  • Prevents Stud Flexing
  • Black Plated Finish
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Mr. Gasket – Cylinder Head Dowel Pins (Part No.4375)

Cylinder Head Dowel Pins

from

$14.99
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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Spectre – Water Neck; Chevy Late Model (Part No.4730)

Water Neck; Chevy Late Model

from

$23.79
Spectre’s Chevrolet late model water neck offers the normal angled water neck and a 1/2 inch NPT threaded hole for a by-pass hose. This water neck has a chrome plated finish for a lasting look great and includes the bolts.

Product Features:
  • Fits Chevy engines
  • Includes a 1/2 inch NPT threaded hole for by-pass hose
  • Includes bolts
  • Chrome plated
  • Easy to install
  • O-ring/gasket not included
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Edelbrock – Front Timing Cover Gasket Set #6998 For Big-Block Chevy, With Front Seal (Part No.6998)

Front Timing Cover Gasket Set #6998 For Big-Block Chevy, With Front Seal

from

$31.99
Edelbrock part #6998 Front Timing Cover Gasket set for Big-Block Chevy. Includes front cover gasket and front seal.

Product Features:
  • Includes replacement timing cover and water pump gaskets and the crank oil seal for big block Chevrolet engines
  • Features a tough, scuff-resistant silicone rubber coating
  • Helps in sealing without the engine warming up
  • Reduces fluid migration through the gasket
  • Resists fatigue
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Edelbrock – Replacement Timing Cover Gasket #4243 For SB Chevy, Fits 2-Piece Part #4242 (Part No.4243)

Replacement Timing Cover Gasket #4243 For SB Chevy, Fits 2-Piece Part #4242

from

$41.99
Product Features:
  • Replacement Gasket Set For PN[4242]
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Competition Cams – CAMSHAFT, BBC 280 MAGNUM HYDRAULIC 1 EA (Part No.11-202-3)

CAMSHAFT, BBC 280 MAGNUM HYDRAULIC 1 EA

from

$235.99
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 – CAMSHAFT, SBC 284 XTREME ENERGY HYDRAULIC 1 EA (Part No.12-250-3)

CAMSHAFT, SBC 284 XTREME ENERGY HYDRAULIC 1 EA

from

$258.99
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,

Product Features:
  • Excellent performance in street carbureted applications.
  • More vacuum allows an increase in duration for improved performance and assists power brakes.
  • Quicker opening lobe profiles deliver increased responsiveness and more area under the lift curve.
  • Best performance with aftermarket intake manifolds, headers, lower gear ratios etc.
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Performance Engines Brands You Can Trust For Your Chevrolet K20

7 trusted brands of Performance Engines line our shelves, ready to help keep your Chevrolet K20 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 Chevrolet K20 span several categories. Some of the highest-rated B & M Performance Engines that will fit your Chevrolet K20 are:
Tork Master 2400
from $339.99
(1)
Tork Master 2400
Performance Torque Converters
Tork Master 3000
from $499.99
(1)
Tork Master 3000
Performance Torque Converters

Top Chevrolet K20 Performance Engines from Mr. Gasket

Your Chevrolet K20 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 $26.99
(20)
High Performance 180 Degree Thermostat for Increased Flow
Performance Engine Coolant Thermostats

Most Purchased Chevrolet K20 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 Chevrolet K20. 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
High Performance 180 Degree Thermostat for Increased Flow
from $26.99
(20)
High Performance 180 Degree Thermostat for Increased Flow
Performance Engine Coolant Thermostats
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

FAQs for Chevrolet K20 Performance Engines

What are the most purchased Performance Engines for the Chevrolet K20?

Out of 153 Performance Engines for the Chevrolet K20, 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 Chevrolet K20 Performance Engines?

Top-rated Performance Engines for your Chevrolet K20 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”
Throttle Body Injection Spacer
from $94.99
(2)
Throttle Body Injection Spacer
“Easy install and noticeable improvement in throttle response and torque. I would recommend”
Action Plus Water Pumps
from $215.99
(2)
Action Plus Water Pumps
“The twisted neck comes to far up on the hub. For a 2 groove pulley it causes the pulley to hit the water pump. You will also need new bolts for the”