

Specifications
- Brand
- COMP Cams
- Part #
- 12-611-5
- UPC
- 036584540045

COMP Cams Camshaft CS 290B-6
$378.83
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COMP Cams CS 290B-6 camshaft for Chevrolet Small Block Gen 1 engines. Optimized for drag and oval track performance.
Key Features
- Fits Chevrolet Small Block Gen 1 engines, including 262 through 400 cubic inch displacements.
- Designed for drag race and oval track use, offering improved top-end power.
- Features a 255/266 degree duration split for aggressive performance.
- Recommended for engines with 4000+ RPM stall speed and 10.5:1+ compression.
- Solid flat tappet design for performance applications.
- Not compatible with factory roller camshafts or 1955-1957 SBC models requiring a rear journal oiling groove.
⚠️ 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 CS 290B-6 camshaft features a 255/266 degree duration split and is designed for drag race and oval track applications on Chevrolet Small Block Gen 1 engines. It's built for engines with a 4000+ stall speed converter and 10.5:1 compression or higher, offering more top-end power compared to some other options. This camshaft is best suited for 1/4 to 3/8 mile tracks with fast corners.
The CS 290B-6 is a solid flat tappet camshaft, and it's important to note that 1955-1957 SBC models require a specific oiling groove on the rear journal, which this particular part number does not accommodate. If your engine falls into that specific early range, please contact us for assistance. This camshaft is intended for performance builds and is not a direct replacement for factory roller camshafts found in many 1985 and newer GM vehicles, including LT1/LT4 and LS-based engines.
For optimal performance, this camshaft is recommended for engines with a 4000+ RPM stall speed and a compression ratio of 10.5:1 or greater. It provides a noticeable increase in top-end power, making it a solid choice for competitive racing environments where maximizing RPM range is crucial. Always consult manufacturer instructions for proper installation and break-in procedures.
Specifications
- Brand
- COMP Cams
- Manufacturer Part #
- 12-611-5
- UPC
- 036584540045
Frequently Asked Questions
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COMP Cams Camshaft CS 290B-6
