Chevrolet G20 Performance Engines

Your One-Stop Shop For Trusted Chevrolet G20 Performance Engines

If you’re in search of Chevrolet G20 Performance Engines aftermarket or OEM parts, consider your search over! Advance Auto Parts carries 467 Performance Engines from top brands with prices ranging from $7.99 to $1,712.00.

Beyond great prices, we stock trusted brands manufacturing all types of Performance Engines for your Chevrolet G20.

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 G20 Performance Engines below, order online to ship to your home, or head into your nearest Advance Auto Parts location to get started.

Essential Chevrolet G20 Performance Engines

Competition Cams – Magnum 230/230 Hydraulic Flat Cam K-Kit (Part No.K11-208-3)

Magnum 230/230 Hydraulic Flat Cam K-Kit

from

$614.99
BIG BLOCK CHEVY HYDRAULIC COMPLETE KIT – Magnum: Great for street machines. Use headers and 9:1+ compression. In 396-402 use 2500+ stall and lower gears. Rough idle.

Product Features:
  • K-Kit includes cam, lifters, valve springs, valve locks, retainers, valve stem seals, timing set, assembly lube, instructions and decals
  • HYDRAULIC – Magnum: Great for street machines. Use headers and 9:1+ compression. In 396-402 use 2500+ stall and lower gears. Rough idle.
  • 280/280 Advertised Duration, 230/230 Duration @ .050″, .520″/.520″ Lift, 110 Lobe Separation
  • Can be used with mild ratio rocker arms and traditional performance valve springs.
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Mr. Gasket – Engine Dress-Up Kit (Part No.9834BP)

Engine Dress-Up Kit

from

$134.99
Includes: 2 short flat black valve covers 2 valve cover gaskets 1 flat black push-on breather 1 flat black dipstick & tube 1 flat black timing chain cover 1 flat black timing tab 1 rubber grommet for valve cover PCV hole 1 breather grommet

Product Features:
  • Ideal Starter Kit
  • Enhances Appearance
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Mr. Gasket – Bolt Water Pump (Part No.4998)

Bolt Water Pump

from

$37.99
This Mr. Gasket Water Pump Bolt Set includes chrome plated grade 5 hex head fasteners to install the water pump on your small or big block Chevrolet with the long style water pump. Includes four 3/8 inch-16 x 2 inch bolts with four 3/8 inch AN washers. AN washers have no exposed shoulder which offers a professional appearance.

Product Features:
  • Chrome Plated
  • Grade 5
  • AN washers with no exposed shoulder for a professional appearance
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Mr. Gasket – Cylinder Head Dowel Pins (Part No.4375)

Cylinder Head Dowel Pins

from

$17.99
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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Competition Cams – High Energy Aluminum 1.7 Ratio Roller Rocker Set for BBC 396-454 w/ 7/16" Stud (Part No.17021-16)

High Energy Aluminum 1.7 Ratio Roller Rocker Set for BBC 396-454 w/ 7/16" Stud

from

$270.99
These High Energy Die Cast Aluminum Roller Rocker Arms for Chevy V8 396-454 applications are perfect for street and moderate race use. With a 7/16″ stud diameter and 1.7 ratio, the die cast, larger-than-stock body of the rocker arms is made of aluminum for superior strength with light overall weight. High Energy Die Cast Aluminum Roller Rocker Arms from COMP Cams are an affordable option that feature a die cast, aluminum body with a needle bearing fulcrum and roller tip. Designed to be stiffer and more durable, these cost effective rocker arms are capable of providing added valve lift while withstanding the rigors of a performance application. Their specially engineered fulcrum and roller tip create far less friction than sliding factory models to lower oil temperatures, thus improving both response and horsepower. Snap rings are used to hold the trunion and bearings locked in place.

Product Features:
  • Cost effective aluminum construction provides superior strength to weight ratio
  • Needle bearing fulcrum and roller tip reduce friction and lower oil temperatures for improved response and horsepower
  • Durable design increases valve lift while withstanding the rigors of moderate race use
  • Die-formed aluminum body is larger than stock, and may require modifications to stock valve covers for clearance.
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Edelbrock – Performer Series Retainer (Qty 16) (Part No.9721)

Performer Series Retainer (Qty 16)

from

$100.99
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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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

$44.99
Product Features:
  • Replacement Gasket Set For PN[4242]
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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

$78.99


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

Engine Crankshaft Seal Kit

from

$43.99
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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Competition Cams – .795" Long Roller Thrust Button for Chevrolet 265-400 Small Block (Part No.200)

.795" Long Roller Thrust Button for Chevrolet 265-400 Small Block

from

$20.99
Roller cam lobes are ground flat rather than tapered like a flat tappet cam; it is necessary to provide some means of holding the cam back to the rear of the engine. The thrust button rides between the front of the timing gear and the back of the front cover and can be shimmed for proper end play of the cam. COMP Cams has both the solid nylon button and the roller thrust bearing available for the ultimate in performance.

Product Features:
  • .795″ Length
  • Ride between the front of the timing gear and the back of the timing cover
  • Can be shimmed to achieve proper endplay
  • Solid nylon and roller thrust bearing styles available
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Edelbrock – Sure Seat Valve Springs for Chevy 262-400 V8 1957-95 (Part No.5802)

Sure Seat Valve Springs for Chevy 262-400 V8 1957-95

from

$64.99
Springs made of highest quality spring wire. Springs precision wound to close tolerances. Non-Rotator style: Dyno tested and street proven. Great match to Edelbrock camshaft kit.

Product Features:
  • For Use With Cast Iron Heads
  • Springs Made of Highest Quality Spring Wire
  • Springs Precision Wound To Close Tolerances
  • Use with Original Equipment Heads Only
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Edelbrock – Engine Gasket Set (Head / Intake / Exhaust / Valve Cover) for Chevrolet (Part No.7362)

Engine Gasket Set (Head / Intake / Exhaust / Valve Cover) for Chevrolet

from

$139.99
Product Features:
  • Head: 4.370″ Bore/0.039″ Thick/9.70cc Vol.
  • Intake: 1.82″x2.54″ Port/.060″ Thick
  • Exhaust: 1.940″ Round Port
  • 5/16″ Valve Cover
  • Multi Piece Configuration
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Edelbrock – Pushrod Set for S/B Chevy (Part No.9630)

Pushrod Set for S/B Chevy

from

$199.99


Product Features:
  • Case-Hardened Tubing
  • Welded Ends
  • 5/16 in. Diameter
  • Use with or without Hardened Steel Guideplates
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Edelbrock – Victor Ram 23-Degree Intake Manifold Top for Small-Block Chevy (Part No.7073)

Victor Ram 23-Degree Intake Manifold Top for Small-Block Chevy

from

$201.99
Product Features:
  • For use on Small Block Chevys with 4150 series carb (side mounting) and the Victor Ram base manifold #7075 only
  • Made of aluminum with a natural finish
  • Hardened washers must be used with intake bolts
  • Single Plane
  • Made In The USA
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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 – Water Neck (Part No.9142G)

Water Neck

from

$74.99
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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Mr. Gasket – Cam Bolt Lock Plate Kit (Part No.948G)

Cam Bolt Lock Plate Kit

from

$20.99
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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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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Mr. Gasket – Premium Quality Thermostat Gasket with Solid Aluminum Carrier (Part No.738G)

Premium Quality Thermostat Gasket with Solid Aluminum Carrier

from

$34.99
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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B & M – Performance Torque Converter for GM TH400, 350, & 375 Transmissions (Part No.20400)

Performance Torque Converter for GM TH400, 350, & 375 Transmissions

from

$329.99
Torque Converter – Tork Master 2000 for GM 1965 to 1991 TH400, 425, 375 and 1968 to 1981 TH350, 375B (not 350C) APPLICATION: Tork Master 2000 for GM 1965 to 1991 TH400, 425, 375 and 1968 to 1981 TH350, 375B (not 350C) The Tork Master is B&M’s lowest cost

Product Features:
  • New Precision Pump Drive Tube
  • Pressure Tested
  • Fully Balanced
  • Needle Thrust Bearing
  • New Thrust Washer
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Mr. Gasket – Ultra Seal: Harmonic Balancer Bolt/Washer Kit (Part No.945G)

Ultra Seal: Harmonic Balancer Bolt/Washer Kit

from

$15.99
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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Competition Cams – Set of 16 O-Ring Valve Seals for Stock Guide Size, 11/32" Valve Stem (Part No.501-16)

Set of 16 O-Ring Valve Seals for Stock Guide Size, 11/32" Valve Stem

from

$223.99
VALVE SEALS, O-RING 11/32″ 1 ST
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Competition Cams – VALVE SEALS, TEFLON 3/8" 1 ST (Part No.505-16)

VALVE SEALS, TEFLON 3/8" 1 ST

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

High Performance Thermostat - 160 Degree Brass & Copper

from

$29.49
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 160 Degrees
  • Designed to Resist Large Variations of Coolant Pressure at High RPM
  • Fully opens at Correct Temperature Consistently Regardless of engine RPM
  • For High Performance Street, Drag Race, and Oval Track
  • Copper & Brass Construction – Resists Corrosion
  • High Flow
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Mr. Gasket – High Performance 180 Degree Thermostat for Increased Flow (Part No.4364)

High Performance 180 Degree Thermostat for Increased Flow

from

$29.99
Mr. Gasket High Performance Thermostats are designed to resist large variations of coolant pressure at high RPM (revolutions per minute). This allows them to fully open at correct temperature consistently regardless of engine RPM. The design also provides the high flow that engines operated a higher RPM need. This thermostat also features a copper/brass construction to further resist corrosion. Mr. Gasket High Performance / High Flow Thermostats are suitable for street, drag race, or oval track applications.

Product Features:
  • Opens At 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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Performance Engines Brands You Can Trust For Your Chevrolet G20

8 trusted brands of Performance Engines line our shelves, ready to help keep your Chevrolet G20 running smooth. Below are some of the most popular brands and their top Performance Engines offerings:

Popular FEL-PRO Performance Performance Engines

FEL-PRO Performance products for the Chevrolet G20 span several categories. Some of the highest-rated FEL-PRO Performance Performance Engines that will fit your Chevrolet G20 are:
Cylinder Head Gasket: Steel Core Composite, Without Head Bolts
from $64.99
(1)
Cylinder Head Gasket: Steel Core Composite, Without Head Bolts
Performance Engine Cylinder Head Gaskets
Cylinder Head Gasket: Steel Core Composite, Without Head Bolts
from $44.99
(1)
Cylinder Head Gasket: Steel Core Composite, Without Head Bolts
Performance Engine Cylinder Head Gaskets
Cylinder Head Gasket: Multi-Layered Steel, Without Head Bolts
from $42.49
(1)
Cylinder Head Gasket: Multi-Layered Steel, Without Head Bolts
Performance Engine Cylinder Head Gaskets

Top Chevrolet G20 Performance Engines from Mr. Gasket

Your Chevrolet G20 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
High Performance Thermostat - 160 Degree Brass & Copper
from $29.49
(12)
High Performance Thermostat – 160 Degree Brass & Copper
Performance Engine Coolant Thermostats
Ultra Seal: Harmonic Balancer Bolt/Washer Kit
from $15.99
(12)
Ultra Seal: Harmonic Balancer Bolt/Washer Kit
Performance Engine Harmonic Balancers

Most Purchased Chevrolet G20 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 G20. 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 $29.99
(20)
High Performance 180 Degree Thermostat for Increased Flow
Performance Engine Coolant Thermostats
Cylinder Head Gasket: Multi-Layered Steel, Without Head Bolts
from $42.49
(1)
Cylinder Head Gasket: Multi-Layered Steel, Without Head Bolts
Performance Engine Cylinder Head Gaskets

FAQs for Chevrolet G20 Performance Engines

What are the most purchased Performance Engines for the Chevrolet G20?

Out of 467 Performance Engines for the Chevrolet G20, 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
Intake Manifold Gasket for 1958-1986 Small-Block Chevy
from $28.99
(12)
Intake Manifold Gasket for 1958-1986 Small-Block Chevy
Performance Engine Intake Manifold Gaskets

What are the top-rated Chevrolet G20 Performance Engines?

Top-rated Performance Engines for your Chevrolet G20 based on customer reviews/ratings are:
Big Mutha' Thumpr 243/257 Hydraulic Flat Cam/Lifter Kit
from $914.99
(13)
Big Mutha’ Thumpr 243/257 Hydraulic Flat Cam/Lifter Kit
“Worked prefect. Gave me the Hi speed blower back”
Ultra Seal: Intake Gasket
from $56.99
(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 ”