What valvetrain components are needed for this mechanical roller camshaft?

This COMP Cams camshaft is a mechanical roller type and requires a full roller valvetrain. This includes mechanical roller lifters, roller rocker arms, and potentially different pushrods to ensure correct geometry. You will also need to follow the specific break-in procedure recommended by COMP Cams.

What compression ratio and engine size is this camshaft best suited for?

This camshaft is recommended for use in 427 cubic inch engines with a compression ratio of 11:1 or higher. Its design is optimized for high-performance racing applications where significant power output is desired.

Can this camshaft be used in a California vehicle?

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

COMP Cams Solid Roller Camshaft 11-711-9

Name: COMP Cams Camshaft CB 306C-R8
Brand: COMP Cams
Price: 542.96 USD
Availability: InStock

COMP Cams Camshaft CB 306C-R8

$542.96

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 271/280 solid roller camshaft for Chevrolet Big Block engines. Designed for puller and mud racing applications.

Key Features

Fits Chevrolet Big Block 396-454 engines originally equipped with flat tappet camshafts.
Mechanical roller camshaft with 271/280 degrees of duration.
Designed for puller and mud racing applications.
Requires mechanical roller lifters and compatible valvetrain.
Recommended for 427 c.i. engines with 11:1+ compression.
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

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Will this fit your vehicle?

Product Details

This COMP Cams camshaft features a 271/280 degree duration split and is a mechanical roller type, meaning it requires roller lifters and a compatible valvetrain setup. It's specifically intended for use in Chevrolet Big Block engines, particularly those in the 427 cubic inch range with a compression ratio of 11:1 or higher, making it suitable for demanding applications like puller and mud racing. This camshaft is a solid choice for builders looking to extract significant power from their BBC engine.

The CB 306C-R8 camshaft is designed to work with Chevrolet Big Block engines originally equipped with flat tappet camshafts, but it necessitates an upgrade to a mechanical roller valvetrain. This includes roller lifters, roller rocker arms, and potentially a different pushrod length to ensure proper geometry. Its aggressive ramp rates and duration are tuned for maximum performance in racing environments where high RPM power is critical. Ensure your engine's internal components and supporting systems can handle the increased stress and airflow this camshaft promotes.

When installing this camshaft, it's important to follow COMP Cams' specific break-in procedure to properly seat the roller lifters and ensure longevity. Because this is a solid roller camshaft, proper oiling and maintenance are crucial. This camshaft is not CARB approved and cannot be shipped to California.