What kind of idle can I expect with this camshaft?

This camshaft has a 240/253 duration at .050 lift, which will result in a noticeable idle. It's designed for performance applications where a strong mid-range power band is desired.

Does this camshaft come with lifters or other valvetrain components?

This listing is for the camshaft only. It is designed to work with your vehicle's existing flat tappet valvetrain components, or you may choose to upgrade them separately.

Can this camshaft be used in a 1966 Chevrolet 396 engine?

No, this specific camshaft is not compatible with 1965-1966 396 Big Block engines that have an oiling groove in the rear journal. For those engines, a different camshaft is required.

COMP Cams Camshaft CB Nx 284H-13 11-568-4

Name: COMP Cams Camshaft CB Nx 284H-13
Brand: COMP Cams
Price: 323.69 USD
Availability: InStock

COMP Cams Camshaft CB Nx 284H-13

$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 Nitrous HP hydraulic flat tappet camshaft for Chevrolet Big Block 396-454 engines. Ideal for Pro Street builds with multi-stage nitrous kits.

Key Features

Fits Chevrolet Big Block 396-454 engines originally equipped with flat tappet camshafts.
Designed for Pro Street applications with multi-stage nitrous kits, 671 blowers, or Vortec Superchargers.
Features a 240-degree intake and 253-degree exhaust duration at .050 lift.
Hydraulic flat tappet design.
Recommended for use with 3000+ stall torque converters.
Not CARB approved and 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

If you're building a Pro Street Chevrolet Big Block for serious nitrous use, this COMP Cams CB Nx 284H-13 camshaft is a solid option. It's designed to work with multi-stage nitrous kits, a 671 blower, or a Vortec Supercharger, and pairs well with a 3000+ stall torque converter. This camshaft is intended for engines originally equipped with flat tappet camshafts, covering a wide range of Chevrolet models like the Impala, Chevelle, and C10 Pickup from the late 60s through the mid-70s.

This hydraulic flat tappet camshaft features a 240-degree intake and 253-degree exhaust duration at .050 lift, giving it a noticeable idle and strong mid-range power. COMP Cams is known for well-built valvetrain components, and this camshaft is no exception, offering a robust design for demanding applications. It's important to note that this camshaft is not CARB approved and cannot be shipped to California. Also, be aware that 1965-66 396 Big Block engines with an oiling groove in the rear journal require a different camshaft; please contact us if your engine has this specific feature.