What is the intended use for this COMP Cams camshaft?

This camshaft is specifically designed for drag racing and bracket racing applications. It's built to provide strong performance for engines like the Chevrolet Big Block 396-454.

What other engine components are recommended for this camshaft?

To achieve optimal performance, this camshaft requires a compression ratio of 10.5:1 or higher and a torque converter with a 4000 RPM stall speed. It's designed for engines originally equipped with flat tappet camshafts.

Is this camshaft legal for use in California?

No, this camshaft is not CARB approved and cannot be legally shipped to California due to emissions regulations.

COMP Cams Hydraulic Roller Camshaft CB 313QnHR-8 | 11-870-11

Name: COMP Cams Camshaft CB 313QnHR-8
Brand: COMP Cams
Price: 583.41 USD
Availability: InStock

COMP Cams Camshaft CB 313QnHR-8

$583.41

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COMP Cams CB 313QnHR-8 hydraulic roller camshaft for Chevrolet Big Block 396-454 engines. Requires 10.5:1+ compression and 4000 stall.

Key Features

This product is a COMP Cams CB 313QnHR-8 hydraulic roller camshaft.
It has a 260-degree intake duration and 270-degree exhaust duration at .050 inch lift.
The camshaft features .550 inch intake lift and .550 inch exhaust lift.
Designed for Chevrolet Big Block 396-454 cubic inch engines.
Requires a minimum of 10.5:1 compression ratio.
Requires a torque converter with a 4000 RPM stall speed.

⚠️ 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 313QnHR-8 camshaft is a hydraulic roller grind designed for drag racing applications, specifically for Chevrolet Big Block engines like the 396, 427, and 454 cubic inch displacements. You'll receive the camshaft itself, ready for installation into your engine build. This cam is intended for those building a strong bracket race engine where significant power under the hood is the goal.

This camshaft features a 260-degree intake duration and 270-degree exhaust duration at .050 inch lift, with a .550 inch intake lift and .550 inch exhaust lift. To make the most of this grind, it requires a compression ratio of 10.5:1 or higher and a torque converter with at least a 4000 RPM stall speed. It's designed to work with engines originally equipped with flat tappet camshafts, but it utilizes modern hydraulic roller technology for improved performance and durability. This cam is a solid option for those looking to extract serious power from their big block Chevrolet for bracket racing.

When installing this camshaft, remember it's intended for competition use and is not CARB approved, meaning it cannot be legally shipped to California. Ensure your engine build meets the specified compression and stall requirements to achieve the intended performance characteristics. This camshaft fits a wide range of Chevrolet vehicles from the late 1960s through the mid-1990s, including popular models like the Chevrolet Impala, Chevelle, and C10 Pickup.