COMP Cams Big Mutha' Thumpr 243/257 Hydraulic Flat Cam for Buick 400, 430, 455 - Street/Strip Performance Camshaft

Big Mutha' Thumpr 243/257 Hydraulic Flat Cam for Buick 400, 430, 455. Street/strip, needs 9.5:1 compression, 2800+ stall, intake, Gears and headers, very rough idle. Street/strip, needs 9.5:1compression, 2800+ stall, intake, gears and headers, very rough idle.

The COMP Cams Big Mutha' Thumpr 243/257 hydraulic flat camshaft is engineered for high-performance street and strip applications on Buick engines, including the 400, 430, and 455 cubic inch models. Designed to deliver a rough idle and strong power at higher RPMs, this camshaft is ideal for enthusiasts seeking aggressive performance. It requires a minimum of 9.5:1 compression ratio and is compatible with setups featuring intake, gears, and headers for optimal results. The cam's specifications support a stall converter of 2800 RPM or higher, making it suitable for modified and heavily tuned engines. Built with precision, this camshaft enhances torque and horsepower, providing a noticeable upgrade over stock components. Installation should be performed with proper consideration of valvetrain components and tuning adjustments to maximize performance and reliability.

Features:

• Hydraulic flat camshaft design for smooth operation and durability

• Optimized for street and strip use with aggressive power characteristics

• Requires minimum 9.5:1 compression ratio for optimal performance

• Supports high stall converters of 2800 RPM or higher

• Compatible with intake, gears, and headers for enhanced engine output

• Designed for Buick engines including 400, 430, and 455 cubic inches

• Provides a rough idle characteristic for a performance sound

Fits
Buick Centurion Base 1971
Buick Centurion Base 1972
Buick Centurion Base 1973
Buick Century Base 1973
Buick Century Base 1974
Buick Century Luxus 1973
Buick Century Luxus 1974
Buick Electra 225 1968
Buick Electra 225 1969
Buick Electra 225 1970
Buick Electra 225 1971
Buick Electra 225 1972
Buick Electra 225 1973
Buick Electra 225 1974
Buick Electra 225 1976
Buick Electra 225 Custom 1968
Buick Electra 225 Custom 1969
Buick Electra 225 Custom 1970
Buick Electra 225 Custom 1971
Buick Electra 225 Custom 1972
Buick Electra 225 Custom 1973
Buick Electra 225 Custom 1974
Buick Electra 225 Limited 1974
Buick Electra Base 1967
Buick Electra Base 1973
Buick Electra Custom 1975
Buick Electra Limited 1975
Buick Electra Limited 1976
Buick Estate Wagon Base 1970
Buick Estate Wagon Base 1971
Buick Estate Wagon Base 1972
Buick Estate Wagon Base 1973
Buick Estate Wagon Base 1974
Buick Estate Wagon Base 1975
Buick Estate Wagon Base 1976
Buick Gran Sport Base 1967
Buick GS 400 Base 1968
Buick GS 400 Base 1969
Buick GS 455 Base 1970
Buick GS 455 Base 1971
Buick GS 455 Base 1972
Buick LeSabre Base 1970
Buick LeSabre Base 1971
Buick LeSabre Base 1972
Buick LeSabre Base 1973
Buick LeSabre Base 1974
Buick LeSabre Base 1975
Buick LeSabre Custom 1970
Buick LeSabre Custom 1971
Buick LeSabre Custom 1972
Buick LeSabre Custom 1973
Buick LeSabre Custom 1975
Buick LeSabre Custom 1976
Buick LeSabre Luxus 1974
Buick Regal Base 1973
Buick Regal Base 1974
Buick Riviera Base 1967
Buick Riviera Base 1968
Buick Riviera Base 1969
Buick Riviera Base 1970
Buick Riviera Base 1971
Buick Riviera Base 1972
Buick Riviera Base 1973
Buick Riviera Base 1974
Buick Riviera Base 1975
Buick Riviera Base 1976
Buick Riviera GS 1975
Buick Riviera Sport 1976
Buick Riviera SR 1976
Buick Skylark Base 1967
Buick Skylark Base 1968
Buick Skylark Base 1970
Buick Skylark Base 1971
Buick Skylark Custom 1968
Buick Skylark Custom 1970
Buick Skylark Custom 1971
Buick Sportwagon Base 1968
Buick Sportwagon Base 1969
Buick Sportwagon Base 1970
Buick Sportwagon Custom 1968
Buick Wildcat Base 1967
Buick Wildcat Base 1968
Buick Wildcat Base 1969
Buick Wildcat Custom 1968
Buick Wildcat Custom 1969
Buick Wildcat Custom 1970
Pontiac Catalina Base 1972
Pontiac Catalina Brougham 1972
Pontiac Catalina Safari 1972