1978 Chevrolet G20 Performance Engines

Essential 1978 Chevrolet G20 Performance Engines

Edelbrock – Intake Manifold replacement top gasket (Part No.6988)

Intake Manifold replacement top gasket

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$24.99
Product Features:
  • Replacement Gasket For PN[7070] Edelbrock Intake
  • One Gasket Only
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Mr. Gasket – High Performance 180 Degree Thermostat for Increased Flow (Part No.4364)

High Performance 180 Degree Thermostat for Increased Flow

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$26.99
Mr. Gasket High Performance Thermostats are designed to resist large variations of coolant pressure at high RPM (revolutions per minute). This allows them to fully open at correct temperature consistently regardless of engine RPM. The design also provides the high flow that engines operated a higher RPM need. This thermostat also features a copper/brass construction to further resist corrosion. Mr. Gasket High Performance / High Flow Thermostats are suitable for street, drag race, or oval track applications.

Product Features:
  • Opens At 180 Degrees
  • Designed to Resist Large Variations of Coolant Pressure at High RPM
  • Fully Opens at Correct Temperature Consistently Regardless of Engine RPM
  • For High Performance Street, Drag Race, and Oval Track
  • Copper & Brass Construction – Resists Corrosion
  • High Flow
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Edelbrock – Pushrod Set for S/B Chevy (Part No.9646)

Pushrod Set for S/B Chevy

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$203.99
Edelbrock part #9646 Pushrods are designed for small-block Chevy V-8 engine applications. These one-piece pushrods are manufactured from high quality 4130 Chromoly steel tubing that has been surface hardened for maximum durability. They have precise forme

Product Features:
  • 7.25 in. Length
  • 0.312 in. Diameter
  • 4130 Chromoly Steel Material
  • Black Oxide Finish
  • Made In The USA
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Edelbrock – Performer-Link Adjustable True-Roller Timing Chain Set (Part No.7810)

Performer-Link Adjustable True-Roller Timing Chain Set

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

Cylinder Head Dowel Pins

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$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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Mr. Gasket – Intake Gasket (Part No.116)

Intake Gasket

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$40.19
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.

Product Features:
  • Manufactured from cellulose/nitrile composition gasket material.
  • Provides excellent sealing and durability.
  • Can be trimmed if necessary for modified port applications.
  • Complete with manifold end seals and distributor gasket.
  • For OE replacement, high performance street, drag race and oval track use.
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FEL-PRO Performance – PERFORMANCE OIL PAN GASKET SET (Part No.1884 R)

PERFORMANCE OIL PAN GASKET SET

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$64.99
Fel-Pro Performance Gaskets deliver reliable sealing under grueling racing conditions

Product Features:
  • Rigid core, molded silicone rubber gaskets utilize the one-piece molded rubber technology for a perfect fit, ease of installation and include compression limiters to prevent overtightening.
  • Not intended for use in emission controlled vehicles.
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Mr. Gasket – Timing Cover Seal (Part No.17)

Timing Cover Seal

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$30.19
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.

Product Features:
  • Nitrile Rubber And High Density Cork
  • Will Not Shrink Or Stick
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Edelbrock – Water Pump Big-Block Chevy Standard/Long in Polished Finish (Part No.8861)

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

from

$475.99
Maximum cooling for street and racing engines. Internal passages are balanced for maximum flow. Impeller is larger than others for maximum pressure. Impeller vanes dramatically increase flow rates. Equal distribution to both sides of block. Only flows in one direction for optimum efficiency. In the early days of the automotive performance industry, you either ran what was available, or you fabricated something you thought met your needs. Such needs were the building blocks of this industry, and it was through the efforts of many that we have the automotive aftermarket, but it was through the work of one name in particular to which many in the industry owe a great debt, and that name is Edelbrock.

Product Features:
  • Maximum Cooling for Street and Racing Engines
  • Internal Passages Are Balanced for Maximum Flow
  • Impeller is Larger than Others For Max Pressure
  • Impeller Vanes Dramatically Increase Flow Rates
  • Equal Distribution to Both Sides of Block
  • Only Flows in One-Direction for Optimum Efficiency
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Mr. Gasket – Ultra Seal: Valve Cover Gasket Set (Part No.5867)

Ultra Seal: Valve Cover Gasket Set

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$38.49
Ultra-Seal is Mr. Gasket premium valve cover gasket material. It’s manufactured from a high density cork and rubber blend with a black latex coat applied to the outside to help seal minor flange irregularites and eliminate oil leakage. It creates a positive seal by controlled swelling of the gasket material when exposed to hot oil. For original equipment replacement, high performance street, drag race and oval track use. Sold as a pair, these gaskets are .187 inch thick. They fit both 1987-2002 Gen I Chevrolet Small Blocks as well as 1992-1997 Gen II LT-Based Small Blocks.

Product Features:
  • Manufactured from high-density cork /rubber blend gasket material
  • A black latex rubber coating is applied to outside of gasket to help seal minor flange irregularities and eliminate the possibility of oil leakage
  • Creates a positive seal by controlled swelling of the gasket material when exposed to hot engine oil
  • For OE replacement, high performance street, drag race and oval track
  • .187″ thick
  • Handles Ex Flange Pressure
  • Forms Leak Proof Seal
  • Black Latex Coating
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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

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$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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Edelbrock – Performer Series Retainer (Qty 16) (Part No.9721)

Performer Series Retainer (Qty 16)

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

CAMSHAFT, SBC 284 XTREME ENERGY HYDRAULIC 1 EA

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

Water Neck; Chevy Late Model

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$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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Mr. Gasket – Water Neck (Part No.2557)

Water Neck

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$27.49
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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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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B & M – Torque Converter, Holeshot 2000 (Part No.70417)

Torque Converter, Holeshot 2000

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$544.99
The Holeshot Converter is a very good choice for the typical street machine that is looking for better launch capability and more strength. With a furnace brazed turbine, new turbine hub and dual pattern drive lugs on some GM Holeshots.

Product Features:
  • Furnace Brazed Impeller
  • Steel Alloy Pump Drive Tube
  • Heavy Duty Needle Bearing
  • Between Stator and Turbine
  • Furnace Brazed Turbine
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FEL-PRO Performance – Cylinder Head Gasket: Steel Core Composite, Without Head Bolts (Part No.1004)

Cylinder Head Gasket: Steel Core Composite, Without Head Bolts

from

$52.99
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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FEL-PRO Performance – Cylinder Head Gasket: Steel Core Composite, Without Head Bolts (Part No.1047)

Cylinder Head Gasket: Steel Core Composite, Without Head Bolts

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$72.99
Fel-Pro Performance Gaskets deliver reliable sealing under grueling racing conditions

Product Features:
  • PROPRIETARY COATING – Nonstick anti-friction coating seals small surface imperfections
  • NO RETORQUE DESIGN – Steel core helps eliminate the need for retorquing head bolts
  • SUPERIOR SEAL – Precise embossed Printoseal sealing beads at all vital areas to eliminate leak paths
  • STRONG AND DURABLE – Features graphite or reinforced fiber facing material and steel armor for strength and durability
  • DESIGNED FOR IMPERFECT SEALING SURFACES – Engineered and manufactured specifically for the repair environment to help seal imperfect sealing surfaces
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Edelbrock – Complete Sure Seat Valve Spring Kit for Chevy 262-400 V8 1957-95 (Part No.5794)

Complete Sure Seat Valve Spring Kit for Chevy 262-400 V8 1957-95

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$151.99
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 are black oxide coated. Non-rotator style: Dyno tested and street proven. Great match to Edelbrock camshaft kit.

Product Features:
  • 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 deg. 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 – Engine Valve Spring Kit (Part No.911-16)

Engine Valve Spring Kit

from

$759.99
Single Outer Valve Springs from COMP Cams allow you to build the perfect spring assembly for your application. The valve spring creation process is far more involved than most people realize. Selecting the right metal stock and creating the best design is not done by chance. COMP Cams has developed a process that creates the highest quality valve spring available. The result is a product that meets and exceeds the expectations of today’s engine builders and racers.O.D. Dia. 1 I.D. Dia. 2 Damper Seat Load Open Load Coil Bind Rate (Lbs./In.) Titanium Retainer Steel Retainer Cup Seat Shims 1.524 1.110 Y 122 @ 1.900 309 @ 1.400 1.200 373 721, 732 1732, 741 4779* 4757

Product Features:
  • Seat pressure: 122 lbs. @ 1.900″, Open Pressure: 309 lbs. @ 1.400″
  • O.D.: 1.524″, I.D.: 1.110″
  • Single valve springs with damper
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Edelbrock – Performer Small-Block Chevy Cylinder Head 64cc Hydraulic Flat Tappet (Part No.60909)

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

from

$1009.99
Product Features:
  • 50-State Street Legal Aluminum Cylinder Head
  • Out-of-the-Box Bolt-On Performance
  • 64cc Combustion Chambers Improve Performance
  • Retain Stock Compression Ratio
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Edelbrock – Engine Cylinder Head (Part No.60849)

Engine Cylinder Head

from

$605.99


Product Features:
  • 50-State Street Legal Aluminum Cylinder Head
  • Out-of-the-Box Bolt-On Performance
  • Hand-Blended Intake and Exhaust Bowls
  • CNC-Matched Intake/Exhaust Ports in Std Location
  • Thicker Deck Surfaces than Other Brands
  • Hardened Tip Stainless Swirl-Polished Valves
  • Heli-Coils Rocker Studs And Exhaust Bolt Holes
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Mr. Gasket – Intake Bolt Kit (Part No.5003)

Intake Bolt Kit

from

$75.99
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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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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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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Competition Cams – Ultra-Gold ARC Rocker Set w/ 1.6 Ratio for Chevrolet Small Block w/ 3/8" Stud (Part No.19002-16)

Ultra-Gold ARC Rocker Set w/ 1.6 Ratio for Chevrolet Small Block w/ 3/8" Stud

from

$412.99
These COMP Cams Ultra-Gold Aluminum Roller Rocker Arms with a 3/8″ stud diameter and 1.6 ratio are designed for Chevrolet V8 265-400 applications. The new modern design features of these Ultra-Gold Rockers are proven to withstand extremely aggressive spring pressure and valve lift. Designed specifically for high performance street and race engines, the Ultra-Gold Aluminum Rocker Arms are precision CNC-machined to strict tolerances. Developed to meet the demands of professional engine builders, these rockers include features never before possible in an aluminum rocker arm.

Product Features:
  • CNC-machined, lightweight design removes weight and yields unrivaled quality and ratio accuracy
  • Designed for high performance street and race engines
  • Precision-sorted trunion bearings withstand elevated valve spring pressure and valve lift
  • Additional clearance, up to 1.650″ O.D. valve spring
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1978 Chevrolet G20 Performance Engines

Maybe you’re in the middle of a full rebuild of that 1978 Chevrolet G20. Maybe you just need a couple of Performance Engines. Either way, Advance Auto Parts has 90 different Performance Engines in our inventory ranging from $14.99 to $1,268.99. That means you can find the exact parts or products you need to keep that 1978 Chevrolet G20 running smoothly.

Performance Engines are only as good as their brand. We stock 7 different brands to make sure you have plenty of trusted parts to choose from for your 1978 Chevrolet G20. Mr. Gasket, Edelbrock, and FEL-PRO Performance are just some of the brands we stock. Search for brands you know or compare prices and reviews to help you decide!

We know you’ll find the perfect Performance Engines for your 1978 Chevrolet G20, but don’t take our word for it – read our customer ratings and reviews and buy with confidence. Out of the 333 reviews in this category, some of the top rated parts include Action Plus Water Pumps with 3.7 stars and Action Plus Water Pumps with 1.5 stars.

So if you’re in the market for aftermarket Performance Engines to keep your 1978 Chevrolet G20 rolling for years to come, look no further. Shop online and have your products shipped direct to your door, or pick up at the nearest Advance Auto Parts location today!

Performance Engines Brands To Make Your 1978 Chevrolet G20 Last

Simple repair, complete replacement, or a full rebuild. No matter the job, your 1978 Chevrolet G20 demands trusted brand parts and products to keep it running. Many trusted brands of Performance Engines make up Advance Auto Parts’ inventory, and all are ready to help make your G20 the best it can be. Be sure to browse some of our top Performance Engines brands and parts.

Popular B & M Performance Engines

We carry B & M parts in our stock across Performance Torque Converters categories, plus more. For a 1978 Chevrolet G20, our most popular B & M Performance Engines include:
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 1978 Chevrolet G20 Performance Engines from Mr. Gasket

Mr. Gasket products are another trusted brand when it comes to Performance Engines for your 1978 Chevrolet G20. 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

FAQs for 1978 Chevrolet G20 Performance Engines

What are the most purchased Performance Engines for the 1978 Chevrolet G20?

Out of 90 Performance Engines for the 1978 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
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
Cylinder Head Gasket: Steel Core Composite, Without Head Bolts
from $52.99
(1)
Cylinder Head Gasket: Steel Core Composite, Without Head Bolts
Performance Engine Cylinder Head Gaskets

What are the top-rated 1978 Chevrolet G20 Performance Engines?

Top-rated Performance Engines for your 1978 Chevrolet G20 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”
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”
Performer-Plus Camshaft Kit for 1957-86 Small-Block Chevrolet
from $334.99
(1)
Performer-Plus Camshaft Kit for 1957-86 Small-Block Chevrolet
“put this cam and lifter kit in my 412 inch small block chevy. works well with patriot alum. heads and edelbrock duel quad intake. all this is running ”