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.
Street/strip, needs 9.5:1 compression, 2800+ stall, intake, gears and headers, very rough idle.
Fits Chrysler 426 HEMI
Fits, Fitments
1966 Dodge Charger Base
1967 Dodge Charger Base
1967 Dodge Charger R/T
1967 Dodge Coronet 440
1967 Dodge Coronet 500
1967 Dodge Coronet Base
1967 Dodge Coronet R/T
1968 Dodge Charger Base
1968 Dodge Charger R/T
1968 Dodge Coronet 440
1968 Dodge Coronet 500
1968 Dodge Coronet Deluxe
1968 Dodge Coronet R/T
1968 Dodge Coronet Super Bee
1968 Plymouth GTX Base
1968 Plymouth Road Runner Base
1969 Dodge Charger 500
1969 Dodge Charger Base
1969 Dodge Charger Daytona
1969 Dodge Charger R/T
1969 Dodge Charger SE
1969 Dodge Coronet 440
1969 Dodge Coronet 500
1969 Dodge Coronet Deluxe
1969 Dodge Coronet R/T
1969 Dodge Coronet Super Bee
1969 Plymouth GTX Base
1969 Plymouth Road Runner Base
1970 Dodge Challenger Base
1970 Dodge Challenger R/T
1970 Dodge Charger 500
1970 Dodge Charger Base
1970 Dodge Charger R/T
1970 Dodge Coronet 440
1970 Dodge Coronet 500
1970 Dodge Coronet Base
1970 Dodge Coronet Deluxe
1970 Dodge Coronet R/T
1970 Dodge Coronet Super Bee
1970 Plymouth Cuda Base
1970 Plymouth GTX Base
1970 Plymouth Road Runner Base
1971 Dodge Challenger Base
1971 Dodge Challenger R/T
1971 Dodge Charger 500
1971 Dodge Charger Base
1971 Dodge Charger R/T
1971 Dodge Charger Special Edition
1971 Dodge Charger Super Bee
1971 Dodge Coronet Base
1971 Dodge Coronet Brougham
1971 Dodge Coronet Crestwood
1971 Dodge Coronet Custom
1971 Plymouth Cuda Base
1971 Plymouth GTX Base
1971 Plymouth Road Runner Base
