Specifications
- Brand
- COMP Cams
- Part #
- 12-658-20
- UPC
- 036584178118
COMP Cams Nitrided Camshaft CS 290Xo-6
$467.89
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COMP Cams Oval Track Nitrided Camshaft CS 290Xo-6 for Chevrolet Small Block Gen 1 engines.
Key Features
- Fits 1955-1996 Chevrolet Gen 1 Small Block engines, excluding factory roller applications.
- Nitrided surface treatment enhances camshaft durability and wear resistance.
- Solid flat tappet design suitable for high-performance and racing applications.
- Intake duration of 260 degrees and exhaust duration of 266 degrees at .050 inch lift.
- Designed for engines 360 cubic inches and larger with 12:1+ compression.
- Requires a 4-barrel carburetor with a good intake and exhaust system.
⚠️ 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
This COMP Cams Nitrided Camshaft CS 290Xo-6 is designed for Chevrolet Gen 1 Small Block engines, particularly those with larger displacements (360+ cubic inches) and higher compression ratios (12:1+). It's built for performance applications, often paired with a 4-barrel carburetor and a well-flowing intake and exhaust system.
The camshaft features a nitrided surface treatment for improved durability and wear resistance, which is especially beneficial in high-performance builds. This particular grind, the CS 290Xo-6, offers a 260/266 degree intake/exhaust duration at .050 inch lift, making it suitable for tight oval track racing or other demanding engine uses. It's intended for engines that utilize a solid flat tappet valvetrain.
When installing this camshaft, it's important to confirm your engine uses a flat tappet system, as many later model Small Blocks (from 1985 onward) switched to factory roller camshafts. Some earlier 265 cubic inch engines from 1955-1957 may also require a specific oiling groove on the fifth journal. Always refer to the manufacturer's installation instructions for proper setup and break-in procedures.
Specifications
- Brand
- COMP Cams
- Manufacturer Part #
- 12-658-20
- UPC
- 036584178118
Frequently Asked Questions
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COMP Cams Nitrided Camshaft CS 290Xo-6