How do I know if my Chevrolet Small Block has a flat tappet or roller camshaft?

Factory roller camshafts were gradually introduced in 305 and 350 engines starting in the mid-1980s. To confirm, you may need to remove the intake manifold or timing cover to visually inspect the camshaft and lifters. Trucks and SUVs often retained flat tappet cams into the mid-1990s.

What is included in the COMP Cams Cam & Lifter Kit CS X4 250H-1?

This kit comes with the camshaft, a set of lifters, assembly lube to ensure proper break-in, COMP Cams decals, and detailed installation instructions. It provides the essential components for a camshaft and lifter replacement.

Are there any special considerations for older Chevrolet 265 engines?

Yes, for 1955-1957 Chevrolet 265 engines, a specific groove on the 5th cam journal is required for proper oiling. If your engine falls into this category, please contact us for more information on this requirement.

COMP Cams CS X4 250H-1 Cam & Lifter Kit CL12-231-2

Name: COMP Cams Cam & Lifter Kit CS X4 250H-1
Brand: COMP Cams
Price: 339.46 USD
Availability: InStock

COMP Cams Cam & Lifter Kit CS X4 250H-1

$339.46

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 CS X4 250H-1 Cam & Lifter Kit for Chevrolet Small Block Gen 1 engines. Offers strong torque and a smooth idle.

Key Features

Fits Chevrolet Small Block Gen 1 engines including 262, 265, 267, 283, 302, 305, 307, 327, 350, and 400.
Offers strong torque, a smooth idle, and excellent mileage.
Includes camshaft, lifters, assembly lube, decals, and instructions.
Designed for engines with a flat tappet camshaft setup.
Not CARB approved and cannot ship to California.
Features the Xtreme 4x4 206/214 hydraulic flat tappet grind.

⚠️ 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

If you're working on a Chevrolet Small Block Gen 1 engine, this COMP Cams CS X4 250H-1 Cam and Lifter Kit is a solid option. It's designed to give you strong torque, a smooth idle, and improved mileage, making it a popular choice for a wide range of applications from classic Camaros and Corvettes to trucks and custom builds. This kit is specifically for engines using a flat tappet camshaft setup, so be sure to check your block's configuration before ordering, as factory roller cams were phased in starting in the mid-80s.

This kit includes the camshaft, lifters, assembly lube, decals, and instructions, so you have the essential parts to get started. The Xtreme 4x4 grind is known for its broad powerband, focusing on low-end torque and mid-range pull without sacrificing too much drivability. It's a well-built kit that can make a noticeable difference in how your engine performs, especially if you're looking to wake up a tired powerplant or build a street-oriented performance engine.

Keep in mind that this kit is not CARB approved and cannot be shipped to California. For 1955-1957 Chevrolet 265 engines, a specific oiling groove on the 5th cam journal is required; please contact us for more details if this applies to your build.