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COMP Cams 12-646-5 Oval Track Solid Flat Tappet Camshaft 236/242 Chevy SBC

(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 + 240 more models)

Manufacturer

Picture for manufacturer COMP Cams

Part Number

12-646-5
7 reviews
Sale Price

$328.84

Estimated ship date Thursday, November 19

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Product Details

The COMP Cams 12-646-5 is a high-performance solid flat tappet camshaft specifically designed for oval track racing applications in Chevrolet small block engines. This aggressive camshaft features a 236/242-degree advertised duration split, providing strong mid-range to top-end power characteristics ideal for circle track competition.

Key Specifications:

  • Advertised Duration: 236° Intake / 242° Exhaust
  • Camshaft Type: Solid Flat Tappet
  • Application: Oval Track Racing
  • Engine Family: Chevrolet Small Block (262-400 cubic inch)
  • Performance Range: 2,500-6,800 RPM

Features and Benefits:

  • Designed specifically for oval track racing demands with optimized valve events for sustained high-RPM operation
  • Solid flat tappet design provides precise valve control and eliminates hydraulic lifter pump-up at high RPM
  • Asymmetric duration split helps optimize exhaust scavenging on circle track engines
  • Manufactured from premium materials with precise lobe profiles for consistent performance
  • Suitable for 9:1 to 11:1 compression ratio applications

This camshaft requires matching solid/mechanical lifters, appropriate valve springs, and proper valve lash adjustment. Professional installation and regular valve lash maintenance are essential for optimal performance and longevity. Designed for dedicated racing applications with supporting modifications including headers, performance intake, and carburetor.

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 + 236 more models

Advertised Exhaust Duration

276

Basic Operating RPM Range

2,200-6,000

Grind Number

266XOS

Usage

Strip

Lifter Type

Solid Flat Tappet

Exhaust Valve Lift

0.51

Intake Valve Lift

0.501

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

242

Intake Duration at .050 Inch Lift

236

AMAZON ASIN

B000P5G6N0

LOBE SEPARATION

108

Engine Family

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

They had the lowest price and great communication. Will order from them again thanks

For as cheap as what I paid for my product I will admit I was scared!!! Got what I asked for in perfect condition, came fast and wonder where have you been all my shopping life? Thanx for such a great deal and fast shipping!!!

Fast shipping and a great deal on parts.

Incredible prices! I purchased a name brand leveling kit for 40% less than any one else is selling them for. Item shipped out within 2 days. Shipping cost is reasonable, and if you leave a review here after your purchase, they'll credit you back $5! BEST DEAL GOING!

I looked around for the best peice for a set of Sparco seats. I found them on autoplicity much cheaper then anywhere else. I figured it would take a few days to ship, but by the time i decided to call for a tracking #, I got an email with tracking # and that my seat was all ready to be delivered the next day. They didnt ship together because they were out of stock for a day or 2. I called about my other seat a few days later and it was already delivered at my door. Any future purchases will be checked with autoplicity 1st.

Great site. Provided needed technical specs. Shipped promptly. Although I had to ask for the tacking number, it was not emailed, one was provided promptly upon request.

Unbeleiveable!!!! Super fast shipping!! Great job!!! Keep up the good work!<br><br>P Savaria

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