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COMP Cams 12-853-9 Oval Track 271/280 Solid Roller Camshaft for Chevy 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)

Part of: COMP Cams Oval Track Solid Roller Camshaft Chevy Small Block

Other options in this family: COMP Cams 12-857-9 COMP Cams 12-861-9 COMP Cams 12-911-9 COMP Cams 12-940-9 COMP Cams 12-996-9

Manufacturer

Picture for manufacturer COMP Cams

Part Number

12-853-9
6 reviews
Sale Price

$558.95

1 left at this price

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Usually delivered within 2 days

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Product Details

The COMP Cams 12-853-9 is a high-performance solid roller camshaft specifically engineered for oval track racing applications in Chevrolet small block engines. This camshaft features aggressive lift and duration specs designed to maximize horsepower and torque in the mid-to-upper RPM range where circle track racing demands peak performance.

Key Specifications:

  • Intake Duration: 271 degrees
  • Exhaust Duration: 280 degrees
  • Solid roller design for maximum valve control and durability
  • Optimized lobe profiles for oval track racing applications
  • Designed for Chevrolet small block V8 engines (262-400ci)

Performance Features:

  • Solid roller construction eliminates valvetrain flex for precise valve timing at high RPM
  • Aggressive duration provides strong mid-range to top-end power delivery
  • Split duration design (271/280) optimizes exhaust scavenging for racing applications
  • Compatible with stock or aftermarket roller lifters and valvetrain components
  • Requires high-performance valve springs and retainers (not included)

This camshaft is ideal for purpose-built oval track race engines running in sportsman, street stock, or modified classes. Professional installation and proper valvetrain setup are recommended to achieve optimal performance and reliability. Valve spring pressure, rocker arm geometry, and piston-to-valve clearance must be verified during installation.

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 Intake Duration

304

Usage

Strip

Intake Valve Lift

0.654

Exhaust Valve Lift

0.657

Intake Duration at .050 Inch Lift

271

Exhaust Duration at .050 inch Lift

280

Grind Number

304RX-8

Basic Operating RPM Range

7,200-9200

Camshaft Series

Oval Track Xtreme RX (50mm Journal)

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

B001G7EY08

Camshaft Material

Billet Steel

LOBE SEPARATION

108

Advertised Exhaust Duration

313

Engine Family

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

Lifter Type

Solid Roller

It was quick and simple, not like other sites that make me want to throw things!

There is no info on receive time

So far so good. EZ website to use.

Quick easy

No hassle ordering and fast quality shipping at a reasonable price

Item arrived promptly (4 days after order), price was good and item was as described.

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