What specific Chevrolet engines does this camshaft kit fit?

This kit is designed for Chevrolet Gen 1 Small Block engines with displacements ranging from 265 to 400 cubic inches. It is compatible with engines that originally used a flat tappet camshaft, but not with factory roller camshafts or LS-based engines.

What components are included in this COMP Cams kit?

This kit provides a complete package for your engine build. It includes the XE256H-12 camshaft, a set of hydraulic lifters, a new timing chain set, assembly lube, and installation decals.

How do I know if my engine has a flat tappet or roller camshaft?

To determine if your engine has a flat tappet or roller camshaft, you will need to remove the intake manifold or the timing cover. Factory roller camshafts were gradually introduced starting in the mid-1980s, with many trucks and SUVs retaining flat tappet cams into the mid-1990s.

COMP Cams Camshaft Kit SK12-256-4 for Chevy Small Block

Name: COMP Cams Camshaft Kit CS XE256H-12
Brand: COMP Cams
Price: 473.37 USD
Availability: InStock

COMP Cams Camshaft Kit CS XE256H-12

$473.37

On Backorder

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

This COMP Cams kit includes a camshaft, lifters, and timing chain set for Chevy Gen 1 Small Blocks. It offers improved performance for older V8s.

Key Features

Fits 103+ vehicle make/model combinations.
Includes camshaft, lifters, timing chain set, assembly lube, and decals.
Designed for Chevrolet Gen 1 Small Block engines (265-400 cubic inches).
XE Computer Controlled camshaft with 212/218 degree duration at .050 lift.
Hydraulic flat tappet design.
112-degree lobe separation angle.

⚠️ 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

When you're looking to wake up an older Chevrolet V8, this COMP Cams Camshaft Kit is a solid option. What you get in this box is a complete package: the XE256H-12 camshaft itself, a set of hydraulic lifters, a new timing chain set, assembly lube, and even some decals to show off your upgrade. This kit is designed for Chevrolet Gen 1 Small Block engines, covering a wide range of displacements from the 265 all the way up to the 400 cubic inch V8s. It's a popular choice for those rebuilding or modifying engines that originally came with a flat tappet camshaft, offering a noticeable bump in performance without going too radical.

The XE256H-12 camshaft features a 212/218 degree intake/exhaust duration at .050 lift and a .477/.477 lift with a 112-degree lobe separation angle. This combination is well-suited for street performance, providing improved throttle response and a more aggressive idle sound, while still being manageable for daily driving in many applications. It's important to confirm your engine uses a flat tappet camshaft, as this kit is not compatible with factory roller camshaft setups found in later model 1985 and newer Small Blocks, or any LS-based engines. If you're unsure, checking the timing cover or intake manifold is the best way to tell.

This kit is a great way to get a matched set of components that are designed to work together, taking the guesswork out of selecting parts for your engine build. Just remember to consult the included instructions for proper installation and break-in procedures to ensure the longevity of your new camshaft and lifters.