from

$350.99

HYDRAULIC – Mutha’ Thumpr: High performance street/strip, needs 9:1 compression, 2500+ stall, intake, gears and headers, rough idle.

Product Features:

HYDRAULIC – Mutha’ Thumpr: High performance street/strip, needs 9:1 compression, 2500+ stall, intake, gears and headers, rough idle.
287/305 Advertised Duration, 235/249 Duration @ .050″, .489″/.476″ Lift, 107 Lobe Separation
Valve spring upgrade required

from

$77.99

Mr. Gasket screw-in rocker arm studs are manufactured from heat treated black oxide coated Grade 8 steel. Ideal for high performance street applications. OE style press in rocker studs can actually pull out of the cylinder head when using high lift camshafts. Includes sixteen studs 3/8-24 x 1.47 inch long top x 7/16-14 bottom.

Product Features:

Black Oxide Coated Grade 8 Steel
Kit Contains 16 Studs
Easy To Install
Heat Treated Steel
Grade 8 Steel

from

$28.99

Product Features:

Clean Positive Seal
Embossed Silicone Bead Surrounding The Port
Matched To Manifolds And Cylinder Heads

from

$44.99

Product Features:

Replacement Gasket Set For PN[4242]

from

$432.99

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

from

$10.99

Spectre’s Intake Bolt and Washer Set is engineered to provide premium quality hardware for Chevrolet 265-400 and Chrysler 273-440 small block engines. Measuring 3/8 inch-16 by 1 inch, these grade 5 bolts feature a corrosion resistant zinc-plated finish and hex heads to ensure easy installation. This kit includes 12 bolts and washers.

Product Features:

Designed for Chevrolet 265-400 and Chrysler 273-440 small block engines
3/8 inch-16 by 1 inch bolts
Kit includes 12 bolts and washers
Manufactured from high quality steel
Bolts feature hex heads

from

$26.99

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.

from

$35.49

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

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

from

$159.99

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

from

$337.99

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

from

$43.99

Spectre’s Chevrolet water neck fits Chevy V8 engines and features a 90 degree neck with a 360 degree swivel design for a custom look and fit. This water neck has been designed around the OEM specifications, has a height of 2-7/8 inches and has a polished aluminum finish for a lasting look that fits great. This water neck includes the allen bolts and sealing O-ring.

Product Features:

Fits Chevy V8 engines
90 degree neck with a 360 degree swivel design
2-7/8 inch height
Includes sealing O-ring and allen bolts
Polished aluminum finish
Easy to install

from

$144.99

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

Product Features:

Chrome Plated Steel
Comes W/valve Cover Gaskets

from

$64.99

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

from

$42.99

These are high quality gaskets that works well on those hard to seal applications. The low density fiber & rubber blend gasket material seals those minor head imperfections with a low clamp force. At .187 inch, the extra thickness can also offer slightly more clearance for roller rockers. Ideal for all those high performance applications where you take the valve covers off and on a lot, and sticking is a problem.brbrFits all 1965-2000 Chevy Big Blocks: 366,396,402,427,454 including GM (General Motors) Gen VI Crate Engines like the 502 and 572.

Product Features:

Manufactured from high-density cork/rubber blend gasket material
A black latex rubber coating is applied to the 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 use.
.187″ thick for additonal valve train clearance
Handles Ex Flange Pressure
Forms Leak Proof Seal
Black Latex Coating

from

$519.99

Product Features:

3500-8000 RPM Range
Single Plane Type-4500 Style Flange
6.77 in. Front Height, 6.77 in. Center Height, 6.77 in. Rear Height
Satin Finish
For Raised Port 23 Degree Heads

from

$32.49

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 195 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

from

$17.79

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

from

$10.99

10 Degree Superlock Steel Retainer for 1.250" OD Valve Spring

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.

from

$64.99

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
50 State Street Legal

from

$1059.99

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

from

$75.99

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

GMC C15 Performance Engines

Your One-Stop Shop For Trusted GMC C15 Performance Engines

Essential GMC C15 Performance Engines

Competition Cams – Mutha’ Thumpr 235/249 Hydraulic Flat Cam (Part No.12-601-4)

Mr. Gasket – Ultra Seal: Screw-In Rocker Arm Studs (Part No.1076)

Edelbrock – Intake Manifold Gasket for 1991 & Later Rectangular port 454 B/B Chevy (Part No.7202)

Edelbrock – Replacement Timing Cover Gasket #4243 For SB Chevy, Fits 2-Piece Part #4242 (Part No.4243)

Edelbrock – Water Pump for Small-Block Chevy in Polished Finish (Long) (Part No.8821)

Spectre – Bolt Kit Intake Hex Head (Part No.4652)

FEL-PRO Performance – Oil Pan Gasket Set: High-Temperature Rubber-Coated Fiber, 5 Piece Set (Part No.1803)

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

Competition Cams – VALVE SEALS, TEFLON 3/8" 1 ST (Part No.505-16)

Edelbrock – Complete Sure Seat Valve Spring Kit for Chevy 262-400 V8 1957-95 (Part No.5794)

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

Spectre – Aluminum Water Neck Chev (Part No.4933)

Mr. Gasket – Chrome Dress-Up Kit (Part No.9834)

FEL-PRO Performance – Cylinder Head Gasket: Steel Core Composite, Without Head Bolts (Part No.1037)

Mr. Gasket – Ultra Seal: Valve Cover Gasket Set (Part No.5862)

Edelbrock – Super Victor 4500 for Raised Port 23 Degree Intake Manifold Small-Block Chevy (Part No.2971)

Mr. Gasket – High Performance Thermostat (Part No.4365)

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

Competition Cams – 10 Degree Superlock Steel Retainer for 1.250" OD Valve Spring (Part No.750-1)

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

Edelbrock – Performer-Link Adjustable True-Roller Timing Chain Set (Part No.7809)

Edelbrock – Performer Small-Block Chevy Cylinder Head 64cc Hydraulic Flat Tappet (Part No.60909)

Mr. Gasket – Ultra Seal: Cylinder Head Bolts (Part No.941G)

GMC C15 Performance Engines List

Performance Engines Brands You Can Trust For Your GMC C15

Popular B & M Performance Engines

Top GMC C15 Performance Engines from Mr. Gasket

Most Purchased GMC C15 Performance Engines from Edelbrock

FAQs for GMC C15 Performance Engines

What are the most purchased Performance Engines for the GMC C15?

What are the top-rated GMC C15 Performance Engines?

Find Your GMC C15 Performance Engines by Year

More Popular Parts for All Makes