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Continue shoppingCOMP Cams Big Mutha' Thumpr 243/257 Hydraulic Roller Camshaft Kit for Chevrolet Big Block 396-454, Part Number GK11-602-8
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Description
Big Mutha' Thumpr 243/257 Hydraulic Roller GK-Kit for Chevrolet Big Block 396-454. Street/strip, needs 9.5:1 compression, 2800+ stall, intake, Gears, and headers, very rough idle.
Street/strip, needs 9.5:1 compression, 2800+ stall, intake, gears and headers, very rough idle.
The COMP Cams Big Mutha' Thumpr 243/257 Hydraulic Roller Camshaft Kit (Part Number GK11-602-8) is designed for high-performance street and strip applications on Chevrolet Big Block engines ranging from 396 to 454 cubic inches. This kit features a rough idle profile, making it ideal for enthusiasts seeking a bold, aggressive sound and strong low-end torque. It requires a minimum of 9.5:1 compression ratio and is optimized for engines equipped with intake manifolds, gears, headers, and a stall converter of 2800 RPM or higher. The kit is engineered to deliver increased horsepower and torque while maintaining drivability suitable for street use.
The kit includes a hydraulic roller camshaft that offers smoother operation and durability compared to flat tappet designs. Its lift and duration specifications are tailored for maximum performance in street/strip setups, ensuring improved throttle response and acceleration. The kit's components are designed to work seamlessly with compatible engine builds, providing a straightforward upgrade for enthusiasts looking to enhance their Chevrolet Big Block's performance.
Note that this product is not carburetor approved and requires carb acknowledgment during installation. The kit is not suitable for applications requiring emissions compliance and is intended for off-highway or race use. Proper installation and tuning are essential to maximize performance and ensure reliable operation. With its robust construction and proven design, the COMP Cams Big Mutha' Thumpr camshaft kit is a reliable choice for serious performance enthusiasts aiming for a distinct sound and significant power gains from their Chevrolet Big Block engine.
Features:
- Designed for Chevrolet Big Block engines from 396 to 454 cubic inches
- Hydraulic roller camshaft with aggressive lift and duration profiles
- Requires a minimum 9.5:1 compression ratio for optimal performance
- Suitable for street and strip applications with 2800+ RPM stall converters
- Provides a rough idle with a bold exhaust note
- Includes components engineered for seamless compatibility and durability
- Ideal for performance upgrades with intake, gears, headers, and stall converters