What is the difference between this camshaft and one with an oiling groove?

The oiling groove is a specific feature found on the rear journal of camshafts for 1955-1957 Chevrolet engines. This particular camshaft (12-675-4) does not have this groove and is intended for engines that do not require it. If your engine has this groove, you will need a different camshaft.

How can I tell if my engine has a flat tappet or roller camshaft?

To determine if your engine has a flat tappet or roller camshaft, you will typically need to remove the intake manifold or the timing cover. GM gradually introduced roller camshafts into 305 and 350 engines starting in the mid-1980s, with trucks and SUVs often retaining flat tappet cams longer.

Does this camshaft come with lifters or other valvetrain components?

This product is for the camshaft only. Lifters, valve springs, retainers, and other valvetrain components are sold separately and should be chosen to match the camshaft's specifications for optimal performance and reliability.

COMP Cams CS XS262S-10 Solid Flat Camshaft 12-675-4

Name: COMP Cams Camshaft CS XS262S-10
Brand: COMP Cams
Price: 320.45 USD
Availability: InStock

COMP Cams Camshaft CS XS262S-10

$320.45

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 Xtreme Energy camshaft for Chevrolet Small Block Gen 1 engines. Offers improved response and mid-range power.

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 224-degree intake duration and 230-degree exhaust duration at .050 lift.
Designed for a noticeable idle, improved mid-range power, and excellent throttle response.
Solid flat tappet design suitable for many performance builds.
COMP Cams is a well-known brand for performance engine parts.

⚠️ 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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Product Details

COMP Cams is well-known for performance engine components, and their Xtreme Energy line of camshafts is a popular choice for enthusiasts looking to get more out of their engines. This CS XS262S-10 solid flat tappet camshaft is designed for Chevrolet Gen 1 Small Block engines, offering a noticeable idle and improved mid-range power with excellent throttle response.

This camshaft features a 224-degree intake and 230-degree exhaust duration at .050 lift. It's a solid choice for building a performance engine that still has good street manners. Keep in mind that while this camshaft fits a wide range of Chevrolet Small Block engines, including popular choices like the 350 and 400 cubic inch variants, it's crucial to verify your specific engine's configuration. Early 1955-1957 models with an oiling groove in the rear journal require a different camshaft, and this part is not compatible with factory roller camshafts found in many 1985 and newer GM engines, or any LS-based engines.

If you're rebuilding a classic Small Block Chevy and want a noticeable improvement in performance without sacrificing too much drivability, this COMP Cams camshaft is a solid option. Always consult your vehicle's service manual or inspect your engine to confirm it uses a flat tappet setup before ordering.