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COMP Cams 12-865-9 Drag Race 278/284 Solid Roller Camshaft for Chevrolet Small Block

(GMC G2500 1979-95, Yukon 1992-95, K1500 1979-86, 1988-95, C1500 1979-86, 1988-95, K2500 1979-86, 1988-95, Jimmy 1970-91 + 238 more models)

Manufacturer

Picture for manufacturer COMP Cams

Part Number

12-865-9
6 reviews
Sale Price

$558.95

Estimated ship date Friday, November 27

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Product Details

The COMP Cams 12-865-9 is a high-performance solid roller camshaft designed specifically for drag racing applications in Chevrolet small block engines. This aggressive cam profile delivers maximum power and torque for competitive racing environments where every horsepower counts.

Camshaft Specifications:

  • Intake Duration: 278 degrees
  • Exhaust Duration: 284 degrees
  • Solid roller lifter design for precise valve control and high RPM stability
  • Optimized lobe profiles for maximum cylinder filling and power output
  • Designed for dedicated race engines with supporting modifications

Performance Characteristics:

  • Broad power band with emphasis on mid-range to high RPM performance
  • Aggressive profile requires upgraded valve train components
  • Best suited for engines with aftermarket heads, intake, and exhaust systems
  • Requires proper valve spring selection and lifter matching

This camshaft is engineered for serious racers who demand consistent, reliable performance under extreme conditions. The solid roller design eliminates deflection at high RPM and provides the durability needed for repeated drag strip passes. Professional installation and proper valve train setup are essential for optimal performance and engine longevity.

Products specifications

Fits

GMC G2500 1979-95, Yukon 1992-95, K1500 1979-86, 1988-95, C1500 1979-86, 1988-95, K2500 1979-86, 1988-95, Jimmy 1970-91, C3500 1979-86, 1988-95, K2500 Suburban 1979-86, 1992-95, K3500 1979-86, 1988-95, C15/C1500 Pickup 1967-74 + 234 more models

Advertised Exhaust Duration

317

Advertised Intake Duration

307

Usage

Strip

Exhaust Valve Lift

0.66

Intake Valve Lift

0.684

Intake Duration at .050 Inch Lift

278

Exhaust Duration at .050 inch Lift

284

Grind Number

307-R6

Basic Operating RPM Range

4,500-7800

Camshaft Series

Drag Race

Assembly Lubricant Included

No

Lifters Included

No

Valve Springs Required

Yes

Prop 65

WARNING: Cancer and Reproductive Harm P65Warnings.ca.gov

C.A.R.B. Exempt for Foreign Vehicles Manufactured Before 1967?

Yes, but must meet tailpipe emission standards for year of vehicle.

C.A.R.B. Exempt for On-Road Vehicles?

No

C.A.R.B. Exempt for Racing and Off-Road Only Vehicles?

Yes, but must be a race/competition only vehicle.

C.A.R.B. Exempt for California Certified Vehicles Manufactured Before 1965?

Yes, but must meet tailpipe emission standards for year of vehicle.

C.A.R.B. Exempt for Federally Certified Vehicles Manufactured Before 1967?

Yes, but must meet tailpipe emission standards for year of vehicle.

Camshaft Gear Attachment

3-Bolt

Cam Type

Solid Roller

AMAZON ASIN

B001G7EY62

Camshaft Material

Billet Steel

LOBE SEPARATION

106

Engine Family

Chevrolet 262-400 c.i. 8 Cylinder (1958-1998)

Lifter Type

Solid Roller

Quick and to the point. Found what I needed first time. Thanks

Great price and reads up to 300lbs just what I needed. Thanks

Not my first time great site

Quick and easy, just hard to find bike parts is all

Great experience

Smooth transaction, very pleased

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