What is included in this COMP Cams Cam and Lifter Kit?

This kit includes the camshaft, a set of matching lifters, assembly lube for proper installation, decals, and detailed instructions. It's a comprehensive package to get your engine's valvetrain updated.

What type of Chevrolet Big Block engines does this kit fit?

This kit is specifically for Chevrolet Big Block engines in the 396-454 cubic inch range that were originally equipped with flat tappet camshafts. It's designed to enhance performance on these specific engine configurations.

Is this camshaft kit street legal in California?

No, this camshaft kit is not CARB approved and cannot be shipped to California due to emissions regulations. Please check local regulations before purchasing if you are outside of California.

COMP Cams Cam & Lifter Kit CB XM278H-12 | CL11-240-4

Name: COMP Cams Cam & Lifter Kit CB XM278H-12
Brand: COMP Cams
Price: 433.91 USD
Availability: InStock

COMP Cams Cam & Lifter Kit CB XM278H-12

$433.91

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

COMP Cams Cam & Lifter Kit CB XM278H-12 for Chevrolet Big Block 396-454 engines. Improves intake flow and exhaust scavenging.

Key Features

Fits Chevrolet Big Block 396-454 engines originally equipped with flat tappet camshafts.
Includes camshaft, lifters, assembly lube, decals, and instructions.
Features a 234/244 degree duration at .050 lift camshaft profile.
Designed to work well with improved intake manifolds and headers for better performance.
Well-built kit for a noticeable improvement in engine power and response.

⚠️ 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

This is the COMP Cams Xtreme Marine Cam and Lifter Kit, specifically designed for Chevrolet Big Block engines like the 396, 427, and 454. If you're looking to wake up an older big block, this kit offers an improved intake flow and is designed to work well with headers, making it a solid choice for a performance rebuild. It's built for engines originally equipped with flat tappet camshafts, and this kit is intended to provide a noticeable bump in performance.

Inside this kit, you'll find the camshaft itself, a set of matching lifters, assembly lube to get everything started right, and decals. The camshaft features a 234/244 degree duration at .050 lift, which is a popular profile for these engines when paired with improved intake manifolds and headers. This combination helps the engine breathe better, especially at higher RPMs, and contributes to a more aggressive power band. It's a well-built kit aimed at giving your big block a more potent personality.

When installing this kit, remember to follow the included instructions carefully, especially regarding the assembly lube. This kit is a great way to refresh the valvetrain and unlock more power from your Chevrolet big block, but it's important to note that it is not CARB approved and cannot be shipped to California. Ensure your engine was originally equipped with a flat tappet camshaft before purchasing.