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

Crow Cams Camshaft, Holden V8 253-308 Hydraulic, Adv. Duration 282/282, Valve Lift 0.493/0.493

Crow Cams Camshaft, Holden V8 253-308 Hydraulic, Adv. Duration 282/282, Valve Lift 0.493/0.493

$643.50

COMP Cams Cam / Lifters / Valvetrain Nitrous HP Hydraulic Flat Advertised Duration 284 / 305 Lif

COMP Cams Cam / Lifters / Valvetrain Nitrous HP Hydraulic Flat Advertised Duration 284 / 305 Lif

$1,438.70

COMP Cams Cam / Lifters / Valvetrain Xtreme Marine Hydraulic Flat Advertised Duration 270 / 286

COMP Cams Cam / Lifters / Valvetrain Xtreme Marine Hydraulic Flat Advertised Duration 270 / 286

$1,376.60

COMP Cams Camshaft, Drag Race, Hydraulic Flat, Advertised Duration 276/284, Lift .520/.520, For Pontiac 265-455, Each

COMP Cams Camshaft, Drag Race, Hydraulic Flat, Advertised Duration 276/284, Lift .520/.520, For Pontiac 265-455, Each

$605.12

COMP Cams Cam / Lifters / Valvetrain Blower and Turbo Solid Flat Advertised Duration 290 / 304 L

COMP Cams Cam / Lifters / Valvetrain Blower and Turbo Solid Flat Advertised Duration 290 / 304 L

$1,498.31

Crow Cams Camshaft, LS Cam, Adv. Duration 293/294, Valve Lift 0.585/0.59

Crow Cams Camshaft, LS Cam, Adv. Duration 293/294, Valve Lift 0.585/0.59

$558.81