Musclecar sound is back and nastier than ever with these Thumpr retrofit hydraulic roller cam and lifter kits from COMP Cams! These cams feature a thumping high performance idle and provide significant horsepower and torque increases. Specially engineered profiles are offered for each unique engine, providing the perfect combination of an early intake valve opening, a long exhaust duration, and a generous amount of intake and exhaust overlap to maximize your engine's nasty-idling characteristics without negatively impacting streetability. These kits include high-quality matched lifters for unbeatable performance, durability, and ease of installation.

More From This Category

COMP Cams Cam / Lifters / Valvetrain High Energy Hydraulic Flat Advertised Duration 240 / 248 Li

COMP Cams Cam / Lifters / Valvetrain High Energy Hydraulic Flat Advertised Duration 240 / 248 Li

$998.27

COMP Cams Camshaft, Xtreme Energy, Hydraulic Flat Cam, Advertised Duration 264/270, Lift .544/.544, For Ford 5.0L, Each

COMP Cams Camshaft, Xtreme Energy, Hydraulic Flat Cam, Advertised Duration 264/270, Lift .544/.544, For Ford 5.0L, Each

$1,083.98

COMP Cams Cam/Lifters/Timing, XE Computer Controlled, Hydraulic Flat, Advertised Duration 262/270, Lift .464/.470, For Chevrolet Small Block, Kit

COMP Cams Cam/Lifters/Timing, XE Computer Controlled, Hydraulic Flat, Advertised Duration 262/270, Lift .464/.470, For Chevrolet Small Block, Kit

$868.29

Crow Cams Camshaft, Holden V8 253-308 Hydraulic, Adv. Duration 280/290, Valve Lift 0.484/0.511

Crow Cams Camshaft, Holden V8 253-308 Hydraulic, Adv. Duration 280/290, Valve Lift 0.484/0.511

$473.20

COMP Cams Cam / Lifters / Valvetrain Mutha' Thumpr Hydraulic Roller Advertised Duration 291 / 31

COMP Cams Cam / Lifters / Valvetrain Mutha' Thumpr Hydraulic Roller Advertised Duration 291 / 31

$2,958.40

COMP Cams Camshaft, XE Computer Controlled, Hydraulic Flat, Advertised Duration 249/260, Lift .434/.444, For Chevrolet Small Block, Each

COMP Cams Camshaft, XE Computer Controlled, Hydraulic Flat, Advertised Duration 249/260, Lift .434/.444, For Chevrolet Small Block, Each

$566.01