1981 GMC Jimmy Performance Engines

Essential 1981 GMC Jimmy Performance Engines

Mr. Gasket – Valve Cover Gasket Set (Part No.182)

Valve Cover Gasket Set

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$42.99
Mr. Gasket Performance Valve Cover Gaskets are high-density cork/rubber blend gaskets that use evenly sized cork particles distributed evenly throughout the rubber binder. The result is a compressible valve cover gasket without leak paths. These gaskets create a positive seal by controlled swelling of the gasket material when exposed to hot engine oil. Provides excellent flange sealing and durability. For original equipment replacement, high performance street, drag race and oval track use.brbrThese gaskets are .312 inch thick. That’s substantially thicker than stock which can allow for additional valve train clearance.brbrFits Chevrolet 396,402,427,454,502 Gen IV, Gen V and Gen VI Big Block.

Product Features:
  • This Gasket Has A Cork Rubber Blend
  • Provides Excellent Sealing And Durability
  • Extra Thick For The Hard To Seal Applications
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Edelbrock – Performer Series Retainer (Qty 16) (Part No.9730)

Performer Series Retainer (Qty 16)

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$99.99
Product Features:
  • Use W/ Valve Springs Part #5703, 5794
  • Set of 16
  • 1.50 in. Outside Diameter
  • Steel Material
  • Black Oxide Finish
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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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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

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$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 – 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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Mr. Gasket – Ultra Seal: Competition Screw-In Rocker Arm Studs (Part No.1075)

Ultra Seal: Competition Screw-In Rocker Arm Studs

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$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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Edelbrock – Street Tunnel Ram Big Block Chevy 2-O Intake Manifold (Part No.7115)

Street Tunnel Ram Big Block Chevy 2-O Intake Manifold

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$798.99
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.

Product Features:
  • For 3500 to 7500 RPM
  • Use Where Low-End Torque is Not a Prime Factor
  • Great For Engines w/Slightly Modified Heads
  • Top Has Vacuum Outlet for Power Brakes
  • Will Accept Forward and Sideways Mounted Carbs
  • Carburetor Center-to-Center Dimensions 9.38 in
  • HEI Ignition Will Not Clear Manifold
  • Street Machines; Street Rods; Pro-Street; Marine
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FEL-PRO Performance – Oil Pan Gasket Set: High-Temperature Rubber-Coated Fiber, 5 Piece Set (Part No.1802)

Oil Pan Gasket Set: High-Temperature Rubber-Coated Fiber, 5 Piece Set

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$25.49
Fel-Pro Performance Gaskets deliver reliable sealing under grueling racing conditions

Product Features:
  • Felcoid/Plus gaskets have a fiber sheet core and a latex rubber coating to eliminate potential leakage paths. The core material resists crushing and splitting, while providing excellent blowout resistance.
  • With steel core to provide ultimate excellent blowout resistance.
  • Not intended for use in emission controlled vehicles.
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Mr. Gasket – Rear Main Seal Gasket (Part No.1960)

Rear Main Seal Gasket

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$23.99
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 – Thumpr 227/241 Hydraulic Flat Cam (Part No.11-600-4)

Thumpr 227/241 Hydraulic Flat Cam

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$542.99
HYDRAULIC – Thumpr: High performance street, stock converter ok, best with 2000+ converter and gears. Choppy/thumping idle.

Product Features:
  • HYDRAULIC – Thumpr: High performance street, stock converter ok, best with 2000+ converter and gears. Choppy/thumping idle.
  • 279/296 Advertised Duration, 227/241 Duration @ .050″, .498″/.483″ Lift, 107 Lobe Separation
  • Valve spring upgrade required
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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

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$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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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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Mr. Gasket – Water Neck (Part No.9141G)

Water Neck

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$58.99
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 To Prevent Leaks
  • Swivels For Hard To Fit Applications
  • Comes With Allen Head Bolts
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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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FEL-PRO Performance – Engine Timing Cover Gasket (Part No.2335)

Engine Timing Cover Gasket

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$20.29
Fel-Pro Performance Gaskets deliver reliable sealing under grueling racing conditions

Product Features:
  • Steel core gasket construction
  • Exclusive design permits significantly faster gasket installation while eliminating potential sealing leak paths.
  • 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 – XX Performer Big-Block Chevy Oval Port Hydraulic Flat Tappet Cam Polished (Part No.604919)

XX Performer Big-Block Chevy Oval Port Hydraulic Flat Tappet Cam Polished

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$1084.99
The Edelbrock #604919 Performer Bare High Compression Cylinder Heads are designed for Big-Block Chevy Oval Port V8 applications. These Edelbrock Performer Series Cylinder heads are 50-state street legal and provide outstanding performance from Idle-5,500

Product Features:
  • High Compression
  • 100cc Combustion Chamber Volume
  • 290cc Intake/110cc Exhaust Runner Volume
  • 2.19 in. Intake/1.88 in. Exhaust Valve Diameter
  • 0.562 in. Deck Thickness
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Edelbrock – Engine Cylinder Head (Part No.60849)

Engine Cylinder Head

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

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

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$299.99
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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B & M – Holeshot 2400 (Part No.20412)

Holeshot 2400

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$499.99
HoleShot 2400 for GM 1965 to 1991 TH400, 425, 375 and 1968 to 1981 TH350, 375B (not 350C) Application: HoleShot 2400 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 c

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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Weiand – Action Plus Water Pumps (Part No.9208P)

Action Plus Water Pumps

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$215.99
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 – Bolt Water Pump (Part No.4998)

Bolt Water Pump

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$32.99
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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Competition Cams – Set of 16 Single Springs w/ 1.254" O.D., 1.254" I.D., 1.700" Installed Height (Part No.981-16)

Set of 16 Single Springs w/ 1.254" O.D., 1.254" I.D., 1.700" Installed Height

from

$126.99
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.

Product Features:
  • Seat pressure: 105 lbs. @ 1.700″, Open Pressure: 273 lbs. @ 1.250″
  • O.D.: 1.254″, I.D.: .880″
  • Single valve springs with damper
  • Approximately .490″ max lift at recommended installed height
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Edelbrock – Sure Seat Valve Springs for Big-Block Chevy 396-402-427-454 V8 (Part No.5862)

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

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$80.99
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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Mr. Gasket – Cylinder Head Dowel Pins (Part No.4377)

Cylinder Head Dowel Pins

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$17.79
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.

Product Features:
  • Precision Machined
  • Case Hardened
  • Give Accurate Alignment
  • 2 Per Set
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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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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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Mr. Gasket – Advance And Retard Cam Bushings (Part No.85)

Advance And Retard Cam Bushings

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$42.49
With Mr. Gasket cam degree bushings you fine tune the camshaft timing of your engine to as little as 1 degree. Even aftermarket timing sets with multiple keyways can’t give the range of adjustment these bushings allow. Retard your camshaft to lower the powerband for more low end torque and midrange horsepower, or advance for more top end power. This kit does even number adjustment 0-8 degrees.

Product Features:
  • Advance the cam for increased torque and horsepower
  • Tune your powerband for more end torque or increase top end horsepower
  • Includes (4) offset bushings and (1) 0 degree bushing
  • Cam sprocket dowel pin hole must be drilled to .406¿ (13/32¿) dia.
  • Cam sprocket dowel pin hole must be drilled to .406┐ (13/32┐) dia.
  • Increase Top-End Horsepower
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1981 GMC Jimmy Performance Engines

Maybe you’re in the middle of a full rebuild of that 1981 GMC Jimmy. Maybe you just need a couple of Performance Engines. Either way, Advance Auto Parts has 83 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 1981 GMC Jimmy 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 1981 GMC Jimmy. 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 1981 GMC Jimmy, but don’t take our word for it – read our customer ratings and reviews and buy with confidence. Out of the 198 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 1981 GMC Jimmy 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 1981 GMC Jimmy Last

Simple repair, complete replacement, or a full rebuild. No matter the job, your 1981 GMC Jimmy 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 Jimmy 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 1981 GMC Jimmy, 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 1981 GMC Jimmy Performance Engines from Mr. Gasket

Mr. Gasket products are another trusted brand when it comes to Performance Engines for your 1981 GMC Jimmy. 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 1981 GMC Jimmy Performance Engines

What are the most purchased Performance Engines for the 1981 GMC Jimmy?

Out of 83 Performance Engines for the 1981 GMC Jimmy, 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 1981 GMC Jimmy Performance Engines?

Top-rated Performance Engines for your 1981 GMC Jimmy 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”
MAGNUM ROLLER ROCKERS, SMALL BLOCK CHEVY 1.52 1 ST
from $213.99
(1)
MAGNUM ROLLER ROCKERS, SMALL BLOCK CHEVY 1.52 1 ST
“just spill on break in oil on rocker wheels,adjust nut down till u can’t go any more and then back off 1/2 turn and your done no noise on start up eve”