

Specifications
- Brand
- COMP Cams
- Part #
- 12-858-9
- UPC
- 036584015413

COMP Cams Camshaft CS 283Tkb-R6
$604.45
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COMP Cams Oval Track Solid Roller Camshaft 12-858-9 for Small Block Chevy engines. Optimized for oval track racing.
Key Features
- Fits Chevrolet GEN 1 Small Blocks including 262, 265, 267, 283, 302, 305, 307, 327, 350 and 400 cubic inch engines.
- Oval Track 255/264 Solid Roller Camshaft designed for 3/8-1/2 mile tracks.
- Provides good top-end power for 355-406 cubic inch engines.
- Optimized for use with Melanized or Nitrided distributor gears; not compatible with cast or steel gears without similar surface treatments.
- Requires verification of engine's factory roller or flat tappet configuration, especially for mid-80s and newer models.
- Does not fit LT1/LT4, LS-based engines, or factory roller Small Blocks from 1985 and newer.
⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more
Product Details
If you're building a Chevrolet Small Block for oval track racing, especially for 3/8 to 1/2 mile tracks with a 355-406 cubic inch engine, this COMP Cams CS 283Tkb-R6 camshaft is designed to give you a strong top-end power band. It’s a solid roller camshaft, which means it uses roller lifters to reduce friction and allow for more aggressive lobe profiles compared to flat tappet cams. This translates to better performance and durability for demanding racing conditions.
This camshaft is optimized for use with Melanized or Nitrided distributor gears. Using cast iron or steel distributor gears without these surface treatments can cause premature wear and will void the warranty. It's important to verify your engine's setup to ensure compatibility. This camshaft fits a wide range of Chevrolet Small Block engines, including popular displacements like the 350 and 400, but it's crucial to check your specific engine's factory roller or flat tappet configuration, especially for models from the mid-80s onward. Early 1955-1957 265ci engines also have specific oiling groove requirements that need to be confirmed.
This is a serious piece of equipment for dedicated racers looking to maximize their engine's performance on the track. Ensure you have the correct distributor gear and have confirmed your engine's factory configuration before installation to get the most out of this camshaft and maintain your warranty.
Specifications
- Brand
- COMP Cams
- Manufacturer Part #
- 12-858-9
- UPC
- 036584015413
Frequently Asked Questions
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