What is the correct break-in procedure for this camshaft?

Solid flat tappet camshafts require a specific break-in procedure, typically involving running the engine at 2500-3000 RPM for about 20-30 minutes immediately after installation. This ensures proper lubrication and prevents premature wear on the cam lobes and lifters. Always refer to the manufacturer's detailed instructions for the exact procedure.

What is the lift and duration of this COMP Cams camshaft?

This CS 290B-4 camshaft has an intake duration of 255 degrees and an exhaust duration of 266 degrees, both measured at .050 inch lift. The lift for both the intake and exhaust lobes is .495 inches.

Will this camshaft fit my 1988 Chevrolet 350 engine?

Yes, this camshaft fits many Chevrolet 350 engines from 1988, provided it is not a factory roller camshaft. You will need to confirm if your specific 1988 350 has a flat tappet or roller setup, as this camshaft is designed for flat tappet configurations.

COMP Cams CS 290B-4 Camshaft 12-610-5

Name: COMP Cams Camshaft CS 290B-4
Brand: COMP Cams
Price: 378.83 USD
Availability: InStock

COMP Cams Camshaft CS 290B-4

$378.83

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Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

COMP Cams CS 290B-4 Oval Track camshaft for Chevrolet Small Block engines. Offers strong torque and quick response for racing.

Key Features

Fits Chevrolet Gen 1 Small Blocks including 262, 265, 267, 283, 302, 305, 307, 327, 350, and 400 cubic inch engines.
Oval Track camshaft designed for 1/4 to 3/8 mile racing applications.
Provides strong torque and quick response for competitive racing.
Features 255 degrees intake duration and 266 degrees exhaust duration at .050 lift.
Offers .495 inches of lift on both the intake and exhaust valves.
Solid flat tappet design requires specific break-in procedures.

⚠️ 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 Chevrolet Small Block for 1/4 to 3/8 mile oval track racing, this COMP Cams CS 290B-4 camshaft is designed to give you that strong torque and quick throttle response you need to be competitive. It's a solid flat tappet camshaft, meaning it uses traditional lifters and requires proper break-in procedures to ensure longevity. This camshaft is a popular choice for those looking to get more out of their Gen 1 Small Block Chevy engines.

This camshaft features a 255-degree intake duration and 266-degree exhaust duration at .050 lift, with .495 inches of lift on both the intake and exhaust sides. These specifications are well-suited for achieving strong mid-range power and a broad torque curve, which is crucial for getting out of corners on the track. COMP Cams is known for making well-built valvetrain components, and this camshaft is no exception, offering a solid option for performance builds.

It's important to note that this camshaft fits a wide range of Chevrolet Small Block engines, including popular displacements like the 350, 327, and 400. However, it does not fit LT1/LT4 engines or factory roller small blocks from 1985 and newer. Also, 1955-1957 model year engines require a specific oiling groove on the rear journal, which this particular camshaft does not have. Always confirm your engine's configuration before ordering to ensure proper fitment.