What type of lifters does this camshaft use?

This COMP Cams camshaft uses hydraulic flat tappet lifters. It is designed for engine blocks that do not have factory provisions for roller lifters.

What kind of idle can I expect with this camshaft?

This camshaft is designed to produce a rough idle and lower vacuum. The .420" lift contributes to these characteristics, making it suitable for certain racing applications.

Does this camshaft fit my 1990s Chevrolet truck?

It fits many Chevrolet Small Block engines from 1958-2002, but compatibility depends on whether your specific truck engine uses a factory roller camshaft or a flat tappet system. Many trucks from the mid-90s still used flat tappet cams. You may need to remove the intake or timing cover to confirm.

COMP Cams Camshaft 12-521-5 - Chevy Small Block

Name: COMP Cams Camshaft CS 41/15 H6
Brand: COMP Cams
Price: 378.83 USD
Availability: InStock

COMP Cams Camshaft CS 41/15 H6

$378.83

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COMP Cams CS 41/15 H6 camshaft for 1958-2002 Chevy Small Block engines. Hydraulic flat tappet design with .420" lift for a rough idle.

Key Features

Fits 1958-2002 Chevrolet Small Block engines (262-400 c.i.d.).
Hydraulic flat tappet design.
.420" lift.
Creates a rough idle and low vacuum.
Designed for blocks without factory roller lifter provisions.
Compatible with many AM General, Avanti II, Buick, and Chevrolet models.

⚠️ 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 is the COMP Cams CS 41/15 H6 camshaft, designed for a wide range of Chevrolet Small Block engines from 1958 through 2002. It's built for engines displacing 262 to 400 cubic inches and utilizes a hydraulic flat tappet design. If you're looking for a camshaft that creates a noticeable, rough idle and operates with lower vacuum, this is a solid option for your build.

This camshaft features a .420" lift, which contributes to its rough idle characteristic and lower vacuum output. It's important to note that this cam is intended for blocks that do not have factory roller lifter provisions. If your engine was built from 1985 or newer, it's crucial to check your block's configuration by removing the intake or timing cover to confirm whether it uses a factory roller or a flat tappet system. This camshaft is not compatible with LT1/LT4 engines or any LS-based engines.

For those working on a 1955-1957 Chevrolet 265 engine, ensure there is an oiling groove on the 5th cam journal. This camshaft is a popular choice for oval track racing applications where a rough idle and lower vacuum are often desired. Please be aware that this part is not CARB approved and cannot be shipped to California.