What components are included in this COMP Cams camshaft kit?

This SK-Kit includes the camshaft, lifters, a timing chain set, assembly lube, decals, and installation instructions. It's designed to be a comprehensive package for your engine build.

Which Chevrolet Small Block engines is this camshaft kit compatible with?

This kit is for Chevrolet Gen 1 Small Block engines, including displacements from 262 to 400 cubic inches. It is essential to confirm your block has a flat-tappet camshaft setup, as it does not fit factory roller blocks from 1985 onwards or any LS-based engines.

What kind of performance can I expect from this camshaft?

This Magnum 255/255 solid roller camshaft is designed for maximum street performance with a noticeable, racy idle. It's best suited for applications aiming for aggressive street use, often paired with a higher stall speed torque converter and appropriate compression and exhaust setups.

COMP Cams Magnum 255/255 Solid Roller Cam Kit SK12-705-8

Name: COMP Cams Camshaft Kit CS 300R
Brand: COMP Cams
Price: 1350.39 USD
Availability: InStock

COMP Cams Camshaft Kit CS 300R

$1350.39

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

COMP Cams Magnum 255/255 Solid Roller Cam Kit SK12-705-8. For Chevrolet Small Block Gen 1 engines.

Key Features

Fits 106+ vehicle make/model combinations.
COMP Cams Magnum 255/255 Solid Roller Camshaft Kit (SK-Kit).
Designed for maximum street effort with a racy idle.
Recommended for use with a 3500 stall converter, 10:1 compression, and headers.
Includes camshaft, lifters, timing chain set, assembly lube, and decals.
For Chevrolet Gen 1 Small Block engines (262-400 cubic inches).

⚠️ 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

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Will this fit your vehicle?

Product Details

COMP Cams is well-known for performance engine components, and their Magnum series camshafts are a popular choice for enthusiasts looking to get more out of their engines. This SK-Kit, the CS 300R, is a solid roller camshaft designed for maximum street performance with a noticeable, racy idle. It’s built for applications that can handle a more aggressive setup, like those using a 3500 stall converter, a 10:1 compression ratio, and headers.

This kit includes the camshaft itself, a set of lifters, a timing chain set, assembly lube, decals, and instructions, making it a comprehensive package for your engine build. The Magnum 255/255 specifications mean it has a 255-degree intake and 255-degree exhaust duration at .050 inch lift, which is a strong profile for a street-driven car that also sees track time. It’s specifically intended for Chevrolet Gen 1 Small Block engines, covering a wide range of displacements from 262 to 400 cubic inches. However, it's important to verify your engine's original camshaft type, as this kit is for flat-tappet blocks and does not fit factory roller blocks from 1985 and newer, nor does it fit any LS-based engines.

For those building a high-performance Gen 1 Small Block, this kit offers a well-built camshaft and the essential supporting components to get the job done. It’s a solid option for achieving that aggressive street-racer feel and improved performance, provided your engine is set up to match its aggressive profile.