1988 GMC C2500 Performance Engines

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

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

Mr. Gasket Performance Intake Gaskets are manufactured from cellulose/nitrile composition gasket material. This is a low density material that conforms well to irregular surfaces and has very good crush resistance at high flange pressures. They provide excellent sealing and durability as the material is designed for sealing gasoline, oils, water and coolant in applications up to 350 degrees Fahrenheit. While die-cut for an excellent fit, they 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
• Die-cut for an excellent fit
• Can be trimmed if necessary for modified port applications
• For OE replacement, high performance street, drag race and oval track use

Product Features:

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

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.

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

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

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

Product Features:

• Case-Hardened Tubing
• Welded Ends
• 5/16 in. Diameter
• Use with or without Hardened Steel Guideplates

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

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.

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

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 8.875 in
• HEI Ignition Will Not Clear Manifold
• For Street Mach.; Street Rods; Pro-Street; Marine

Product Features:

• 2000-6500 RPM Power Band
• Single Plane/Open Plenum Design
• No Provision For Divorced Or Hot Air Choke
• Square Flange Carburetor Mounting

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

Product Features:

• Complete Single For Flat Tappet
• 110cc Combustion Chamber Volume
• 290cc Intake/110cc Exhaust Runner Volume
• 2.19 in. Intake/1.88 in. Exhaust Valve Diameter
• 0.562 in. Deck Thickness

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

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

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

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

Designed to deliver an aggressive, hard-hitting exhaust note at idle, the Thumpr camshaft series from COMP Cams also delivers excellent horsepower gains and a broad torque curve. A perfect choice for muscle cars and street rods, the Thumpr series’ early i

Product Features:

• Early intake valve opening and long exhaust duration create optimum overlap for powerful, hard-hitting exhaust note.
• Best with aftermarket converters and more rear gear.
• Three unique cam designs for each application that deliver excellent horsepower gains and broad torque curve; perfect choice for muscle cars and street rods.

Designed to deliver an aggressive, hard-hitting exhaust note at idle, the Thumpr camshaft series from COMP Cams also delivers excellent horsepower gains and a broad torque curve. A perfect choice for muscle cars and street rods, the Thumpr series’ early i

Product Features:

• Early intake valve opening and long exhaust duration create optimum overlap for powerful, hard-hitting exhaust note.
• Best with aftermarket converters and more rear gear.
• Three unique cam designs for each application that deliver excellent horsepower gains and broad torque curve; perfect choice for muscle cars and street rods.

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

These Magnum Roller Rocker Arms for Chevy V8 265-400 and V6 200-262 applications are the ultimate street rocker. With a 3/8″ stud diameter and 1.52 ratio, they are designed for serious performance enthusiasts. All Magnum Roller Rocker Arms are constructed

Product Features:

• Roller tip reduces friction while stiff design and superior ratio accuracy yield more effective valve lift
• For applications with less than 350 lbs. of open spring pressure
• Constructed from 8620 chromemoly steel, a superior material that will not flex and ensures maximum lift
• Ultimate street roller rocker arm designed for serious performance enthusiasts

Product Features:

• Designed for Optimum Torque and Acceleration
• Maximum Performance From Idle through Mid-Range
• Matched to Edelbrock Performer Intakes
• Includes Hydraulic Lifters and Assembly Lube
• Major Improvement in Throttle Response and Torque
• Use For Daily Drivers/Trucks/Vans/RVs/4x4s
• Take The Guesswork Out Of Camshaft Selection

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

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

Product Features:

• 4.125 in. Cylinder Bore Diameter
• 0.039 in. Thickness
• 8.7cc Volume
• Charcoal Color
• Two Piece Configuration