

Specifications
- Brand
- COMP Cams
- Part #
- SK12-248-4
- UPC
- 036584041535

COMP Cams Camshaft Kit CS XM 290H-12
$488.41
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COMP Cams camshaft kit for Chevrolet Small Block Gen 1 engines. Improves performance for bracket racing and high-performance applications.
Key Features
- Fits Chevrolet Gen 1 Small Block engines, including many 262 through 400 cubic inch displacements.
- Includes camshaft, lifters, timing chain set, assembly lube, and decals for a complete installation.
- Xtreme Marine camshaft with 246/256 duration and hydraulic flat tappet design.
- Designed for 9.5:1 compression ratio and header-equipped engines.
- Suitable for bracket racing and high-performance applications.
- Not compatible with factory roller camshafts (typically 1985 and newer) or LS-based 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
If you're looking to get more out of your Chevrolet Small Block engine, especially in a high-performance or bracket racing scenario, this COMP Cams Xtreme Marine camshaft kit is a solid option. This kit is designed for Gen 1 Small Block Chevy engines, commonly found in a wide range of vehicles from classic muscle cars like the Camaro and Corvette to trucks and even some marine applications. It's built to work with a 9.5:1 compression ratio and headers, aiming to give you an improved power band for demanding use.
This SK-Kit comes with everything you need to get the camshaft installed: the camshaft itself, a set of lifters, a timing chain set, assembly lube, and decals. The camshaft features a 246/256 duration with hydraulic flat tappet design, which is a popular choice for those seeking a noticeable bump in performance without going to an extreme setup. It's important to verify your engine uses a flat tappet camshaft, as many later model Small Blocks (especially from 1985 onward) switched to factory roller camshafts, and this kit is not compatible with those. Removing the intake manifold or timing cover is the best way to confirm your engine's configuration.
This kit is well-suited for applications like jet boats with an 'A' impeller or bracket racing where consistent performance is key. While it's not CARB approved and cannot be shipped to California, it offers a significant upgrade for eligible Chevrolet Small Block engines looking for more power and responsiveness.
Specifications
- Brand
- COMP Cams
- Manufacturer Part #
- SK12-248-4
- UPC
- 036584041535
Frequently Asked Questions
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COMP Cams Camshaft Kit CS XM 290H-12
