What is the recommended compression ratio for this camshaft?

For optimal performance with the COMP Cams XE294H-10 camshaft, a compression ratio of 10.5:1 or higher is recommended. This helps ensure efficient combustion and power delivery for your build.

Does this camshaft fit all Chevrolet Big Block engines?

This camshaft is designed for 396-454 Big Block engines that originally came with flat tappet camshafts. However, 1965-1966 396 models with an oiling groove in the rear journal require a different camshaft. Please contact us if your engine has this specific feature.

What other components are typically needed when installing this camshaft?

When installing a performance camshaft like this, it's common to also consider headers for improved exhaust flow, a higher stall torque converter (3200+ RPM recommended here), and ensuring your engine has adequate compression (10.5:1+).

COMP Cams Camshaft CB XE294H-10 11-254-4

Name: COMP Cams Camshaft CB XE294H-10
Brand: COMP Cams
Price: 323.69 USD
Availability: InStock

COMP Cams Camshaft CB XE294H-10

$323.69

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 for Chevrolet Big Block 396-454 engines. Designed for pro street and bracket racing applications.

Key Features

Fits Chevrolet Big Block 396-454 engines originally equipped with flat tappet camshafts.
Xtreme Energy series camshaft with 250/256 degrees duration at .050 inch lift.
Designed for pro street and bracket racing applications.
Recommended for use with headers, lower gears, 3200+ RPM stall converter, and 10.5:1+ compression.
Hydraulic flat tappet design.
Not CARB approved; cannot ship to California.

⚠️ 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

Secure CheckoutFast Shipping631-982-0042

Will this fit your vehicle?

Product Details

This COMP Cams Xtreme Energy camshaft is designed for Chevrolet Big Block engines, specifically the 396 to 454 cubic inch displacements. It's a hydraulic flat tappet camshaft intended for performance builds, often seen in pro street or bracket racing setups. To get the most out of this camshaft, you'll typically want to pair it with headers, lower gear ratios, a torque converter with a 3200+ RPM stall speed, and an engine compression ratio of 10.5:1 or higher.

The XE294H-10 features a 250/256 degree intake/exhaust duration at .050 inch lift, providing a noticeable increase in performance over stock. This camshaft is well-built and offers a good balance for street-driven vehicles that also see track time. It's important to note that this specific camshaft is not CARB approved and cannot be shipped to California. Also, be aware that 1965-1966 396 Big Block engines with an oiling groove in the rear journal require a different camshaft; please contact us if your engine falls into this category.