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COMP Cams 12-647-5 Oval Track Solid Flat Tappet 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 + 215 more models)

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

Other options in this family: COMP Cams 12-610-5 COMP Cams 12-652-5 COMP Cams 12-650-5 COMP Cams 12-608-5 COMP Cams 12-645-5

Manufacturer

Picture for manufacturer COMP Cams

Part Number

12-647-5
8 reviews
Sale Price

$325.95

1 left at this price

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Usually delivered within 2 days

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Product Details

The COMP Cams 12-647-5 is a high-performance solid flat tappet camshaft specifically designed for oval track racing applications in Chevrolet small block engines. This camshaft features an aggressive profile optimized for maximum power output in competitive circle track environments where sustained high-RPM operation and reliability are critical.

Camshaft Specifications:

  • Advertised Duration: 236° Intake / 238° Exhaust
  • Solid flat tappet design for precise valve control and durability
  • Engineered specifically for oval track racing demands
  • Compatible with Chevrolet small block V8 engines (262-400 cubic inches)
  • Requires solid/mechanical lifters, performance valve springs, and proper break-in procedures

Performance Characteristics:

  • Optimized cam profile delivers strong mid-range to upper RPM power band
  • Aggressive lobe design maximizes airflow for competitive racing applications
  • Solid lifter design eliminates pump-up at high RPM for consistent valve timing
  • Ideal for purpose-built oval track race engines with supporting modifications

This camshaft requires proper installation by an experienced engine builder, including checking piston-to-valve clearance, installing appropriate valve train components (pushrods, rocker arms, springs, retainers), and following COMP Cams' break-in procedures for flat tappet camshafts. Professional engine assembly and dyno tuning are recommended to achieve optimal performance and reliability in racing applications.

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 + 211 more models

Advertised Exhaust Duration

272

Basic Operating RPM Range

2,500-6,200

Usage

Strip

Lifter Type

Solid Flat Tappet

Exhaust Valve Lift

0.501

Intake Valve Lift

0.501

Grind Number

266XO-8

Camshaft Material

Cast Iron

Cam Type

Solid Flat Tappet

Camshaft Series

Xtreme Oval

Assembly Lubricant Included

Yes

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.

Advertised Intake Duration

266

Camshaft Gear Attachment

3-Bolt

Exhaust Duration at .050 inch Lift

238

Intake Duration at .050 Inch Lift

236

LOBE SEPARATION

108

Engine Family

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

AMAZON ASIN

B000P5B78Y

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