What is the benefit of the nitrided finish on this camshaft?

The nitrided finish is a surface hardening process that makes the camshaft lobes more resistant to wear. This is particularly beneficial for flat tappet camshafts, helping to ensure a longer lifespan and consistent performance.

What kind of torque converter should I use with this camshaft?

This camshaft is designed to work best with a torque converter that has a stall speed of 2500 RPM or higher. This helps to keep the engine in its optimal power band during acceleration.

Does this camshaft come with a break-in procedure?

Yes, proper break-in is critical for flat tappet camshafts. Always refer to the manufacturer's installation instructions for the specific break-in procedure, which typically involves running the engine at a specific RPM for a set period shortly after installation.

COMP Cams Solid Flat Cam CB XS274 S 11-677-20

Name: COMP Cams Nitrided Camshaft CB XS274 S
Brand: COMP Cams
Price: 444.02 USD
Availability: InStock

COMP Cams Nitrided Camshaft CB XS274 S

$444.02

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COMP Cams Nitrided Camshaft CB XS274 S for Chevy Big Block 396-454 engines. Delivers strong mid-range torque and throttle response.

Key Features

Fits Chevrolet Big Block 396-454 engines originally equipped with flat tappet camshafts.
Nitrided surface treatment increases hardness and wear resistance for improved durability.
Provides strong mid-range torque and improved throttle response.
Designed for use with a torque converter stall speed of 2500 RPM or higher.
Features a 236/242 duration at .050 lift camshaft profile.
Compatible with a wide range of Chevrolet vehicles from 1967-1993.

⚠️ 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 working on a Chevrolet Big Block engine from 1967 through the mid-1990s, specifically those originally equipped with flat tappet camshafts like the 396, 427, or 454, this COMP Cams Xtreme Energy camshaft is a solid option. This is a solid flat tappet camshaft, meaning it uses a traditional design that's known for its durability and ability to handle high RPMs. It's designed to give you a noticeable boost in mid-range torque and throttle response, making your engine feel much more lively when you're accelerating or cruising.

What sets this camshaft apart is its nitrided finish. This is a heat-treating process that hardens the surface of the camshaft, making it more resistant to wear, especially important with flat tappet designs that rely on direct contact between the lobe and lifter. This nitriding helps ensure a longer service life and consistent performance over time. The grind itself, with its 236/242 duration at .050 lift, is tuned for strong performance in the 2500 RPM and up range, and it pairs well with a torque converter that has a stall speed of 2500 RPM or higher.

This camshaft is intended for a wide range of Chevrolet vehicles from the late 60s through the early 90s, including popular models like the Chevelle, Impala, and C10 pickups. Keep in mind that this part is not CARB approved and cannot be shipped to California. Always refer to the manufacturer's installation instructions for proper setup and break-in procedures.