

Specifications
- Brand
- COMP Cams
- Part #
- 12-626-20
- UPC
- 036584178033

COMP Cams Nitrided Camshaft CS 275Ma-S6
$445.25
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COMP Cams CS 275Ma-S6 solid flat tappet camshaft for Chevrolet Gen 1 Small Blocks. Nitrided for improved durability.
Key Features
- Fits Chevrolet Gen 1 Small Blocks including 262, 265, 267, 283, 302, 305, 307, 327, 350, and 400 cubic inch engines.
- Features a nitrided surface treatment for improved wear resistance and durability.
- Intake duration is 248 degrees at 0.050 inch lift, and exhaust duration is 256 degrees at 0.050 inch lift.
- Designed for performance applications requiring better intake, heads, headers, and carburetor.
- Not compatible with factory roller camshaft blocks or LS-based engines.
- Requires checking the 5th cam journal for an oiling groove on 1955-1957 Chevrolet 265 engines.
⚠️ 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 275Ma-S6 is a solid flat tappet camshaft designed for Chevrolet Gen 1 Small Block engines. You get the camshaft itself, which is nitrided for increased wear resistance. This camshaft is intended for builds aiming for more performance, particularly in applications with larger displacement engines and supporting modifications like better intake manifolds, cylinder heads, headers, and carburetors. It's a popular choice for those looking to get more out of their classic Chevy V8.
The nitriding process hardens the surface of the camshaft, which helps it stand up better to the friction and wear associated with flat tappet lifters. This camshaft features a 248-degree intake duration and a 256-degree exhaust duration, measured at 0.050 inch lift. This profile is designed to work well in larger displacement engines, offering improved performance, especially in the mid to upper RPM range, and is best suited for vehicles with fast-cornering tracks or performance-oriented driving. It's important to ensure your engine is set up to handle this camshaft's demands, including proper valvetrain components and exhaust systems.
This camshaft fits a wide range of Chevrolet Gen 1 Small Block engines, including popular displacements like the 350, 400, and smaller V8s. However, it is crucial to verify your specific engine's configuration. This camshaft is not compatible with factory roller camshaft blocks, which became common in the mid-1980s and later, nor is it for any LS-based engines. Always confirm your block type by removing the intake or timing cover before installation.
Specifications
- Brand
- COMP Cams
- Manufacturer Part #
- 12-626-20
- UPC
- 036584178033
Frequently Asked Questions
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COMP Cams Nitrided Camshaft CS 275Ma-S6
