What Chevrolet Small Block engines does this kit fit?

This kit fits a wide range of Chevrolet Gen 1 Small Block engines, including displacements from 262 to 400 cubic inches. It's crucial to verify your engine uses a flat tappet camshaft, as many later models switched to roller cams. It does not fit LT1/LT4 or LS-based engines.

What is included in this camshaft kit?

The kit comes with the COMP Cams XE284H camshaft, hydraulic flat tappet lifters, valve springs, retainers, valve locks, valve stem seals, and a timing chain set. It also includes assembly lube for flat tappet applications and installation instructions.

What kind of idle can I expect with this camshaft?

This Xtreme Energy camshaft is designed for performance and is known for a noticeable, rough idle. This is a common characteristic for camshafts aimed at street/strip applications, indicating increased performance potential.

COMP Cams Camshaft Kit CS XE284H-10 K12-250-3

Name: COMP Cams Camshaft Kit CS XE284H-10
Brand: COMP Cams
Price: 671.77 USD
Availability: InStock

COMP Cams Camshaft Kit CS XE284H-10

$671.77

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 kit for Chevrolet Small Block Gen 1 engines. Includes camshaft, lifters, springs, and more.

Key Features

Fits 106+ vehicle make/model combinations.
Includes camshaft, lifters, valve springs, retainers, valve locks, valve stem seals, and timing chain set.
Designed for street/strip applications with a 2800+ stall speed.
Features a 240/246 degree duration and .488/.488 inch lift.
Requires headers and gears for optimal performance.
Known for a rough idle characteristic.

⚠️ 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

If you're looking to get more performance out of your Chevrolet Gen 1 Small Block engine, this COMP Cams Xtreme Energy Camshaft Kit is a solid choice. This kit is designed for street/strip applications and works well with engines that have headers and gears, typically needing a stall converter of 2800 RPM or higher. It's known for a noticeable idle that lets everyone know you mean business.

This isn't just a camshaft; it's a complete package to help you achieve your performance goals. Inside this kit, you'll find the XE284H camshaft itself, along with hydraulic flat tappet lifters, valve springs, retainers, valve locks, and valve stem seals. COMP Cams also includes a timing chain set to ensure proper valvetrain synchronization, assembly lube for flat tappet applications, and installation instructions. This comprehensive approach means you have most of what you need to get the job done right, minimizing the need to source individual components separately.

This kit fits a wide range of Chevrolet Gen 1 Small Block engines, including popular displacements like the 350, 400, and 327. It's important to verify your specific engine uses a flat tappet camshaft, as many later models (especially from 1985 and newer) switched to factory roller camshafts. Removing the intake manifold or timing cover is usually the best way to confirm. This kit is not CARB approved and cannot be shipped to California.