COMP Cams Nitrided Camshaft CB 279T H7 for Chevrolet Big Block Engines - Part Number 11-600-20

Designed to deliver an aggressive, hard-hitting exhaust note at idle, the Thumpr camshaft series from COMP Cams also delivers excellent horsepower gains and a broad torque curve. A perfect choice for muscle cars and street rods, the Thumpr series' early intake valve opening and long exhaust duration create optimum overlap for that race car idle. The Thumpr grinds all require an aftermarket torque converter and lower gear ratio to ensure the drivetrain always puts the engine in its powerband. Additionally, Thumpr camshafts typically deliver reduced vacuum at idle, making a vacuum canister, pump or hydroboost a requirement for vehicles running power brakes. High performance street, stock converter ok, best with 2000+ converter and gears. Choppy/thumping idle. Nitrided. Chevrolet GEN IV 396-454 Big Block Engines Originally Equipped with Flat Tappet Camshafts

The COMP Cams CB 279T H7 is a high-performance nitrided camshaft designed specifically for Chevrolet GEN IV 396-454 big block engines that were originally equipped with flat tappet camshafts. This camshaft delivers an aggressive, deep exhaust note at idle, making it ideal for muscle cars and street rods seeking a bold sound. Its advanced design features early intake valve opening and extended exhaust duration, creating optimal overlap for a race-inspired idle that commands attention. The camshaft's robust profile results in significant horsepower gains and a broad torque curve, enhancing overall engine performance for street applications.

The COMP Cams CB 279T H7 requires an aftermarket torque converter and lower gear ratio to ensure the engine stays within its powerband, especially given its choppy, thumping idle. Its design is best suited for vehicles running 2000+ RPM converters and gears, making it a popular choice among enthusiasts seeking maximum street performance. The camshaft's nitrided finish increases durability and resistance to wear, ensuring long-lasting performance under demanding conditions.

This camshaft is not carburetor approved and requires carb acknowledgment upon installation, aligning with its high-performance specifications. It is intended for use in applications where reduced vacuum at idle is acceptable, such as vehicles equipped with vacuum canisters, pumps, or hydroboost systems for power brakes. Overall, the COMP Cams Nitrided Camshaft CB 279T H7 offers a compelling upgrade for those looking to extract maximum power and a distinctive sound from their Chevrolet big block engine.

Features:

• Aggressive exhaust note at idle for a bold sound

• Early intake valve opening and long exhaust duration for optimal overlap

• Significant horsepower and broad torque curve gains

• Nitrided finish enhances durability and wear resistance

• Designed for Chevrolet GEN IV 396-454 big block engines

• Requires aftermarket torque converter and lower gear ratio

• Best with 2000+ RPM converter and gears for optimal performance

• Choppy, thumping idle characteristic

• Not carburetor approved; requires carb acknowledgment

• Ideal for muscle cars and street rods seeking high performance