What is the main benefit of the CB X4 254H-11 camshaft?

The main benefit of this camshaft is its ability to improve low-end and mid-range torque and power for your Chevrolet Big Block engine. It's designed to give you better acceleration and pulling power where you need it most.

Does this camshaft fit all Chevrolet Big Block engines?

This camshaft is designed for 396-454 cubic inch Chevrolet Big Block engines that originally came with flat tappet camshafts. It will not fit 1965-1966 396 models that have an oiling groove in the rear journal.

What is included with this camshaft?

This product listing is for the COMP Cams CB X4 254H-11 camshaft itself. You will need to source separate items such as lifters, valve springs, retainers, and valve seals if they are not already part of your existing setup or a separate kit.

COMP Cams CB X4 254H-11 Hydraulic Flat Camshaft

Name: COMP Cams Camshaft CB X4 254H-11
Brand: COMP Cams
SKU: comp-cams-comp-cams-camshaft-cb-x4-254h-11-t14-4389858
Price: 287.87 USD
Availability: BackOrder

COMP Cams Camshaft CB X4 254H-11

$287.87

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 CB X4 254H-11 hydraulic flat camshaft for Chevrolet Big Block 396-454 engines. Offers good low-end and mid-range torque.

Key Features

This product is a COMP Cams CB X4 254H-11 hydraulic flat tappet camshaft.
It is designed for Chevrolet Big Block 396-454 cubic inch engines originally equipped with flat tappet camshafts.
Offers good low-end and mid-range torque and power.
Provides a good idle quality for street use.
Features 210 degrees of intake duration and 218 degrees of exhaust duration at .050 lift.
Fits a wide range of Chevrolet vehicles from the 1960s through the 1990s.

⚠️ 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 COMP Cams CB X4 254H-11 camshaft is designed for Chevrolet Big Block engines, specifically the 396 to 454 cubic inch displacements originally equipped with flat tappet camshafts. It's a popular choice for those looking to improve the low-end and mid-range torque and power output of their engine, while still maintaining a good idle quality. This camshaft fits a wide range of Chevrolet vehicles, including models like the 1967-1975 Chevrolet Bel Air, 1967-1972 Chevrolet Camaro, and 1967-1974 Chevrolet Corvette.

The Xtreme 4x4 254H-11 features a 210/218 degree intake/exhaust duration at .050 lift, making it well-suited for applications where improved grunt off the line and through the mid-range is desired. Its hydraulic flat tappet design means it operates with less maintenance than a mechanical setup. This camshaft is a solid option for building a strong-running street or off-road big block that still behaves well in daily driving conditions.

Please note that this camshaft is not CARB approved and cannot be shipped to California. Also, be aware that 1965-1966 396 Big Block engines have a rear journal oiling groove that this specific camshaft part number does not accommodate. If your engine falls into that specific early 396 category and requires that groove, you'll need to contact us directly to arrange a special order.