Comp Cams K11-600-4 Thumpr Hydraulic Flat Tappet Cam Kit for Chevy Big Block 396/454

Musclecar sound is back and nastier than ever;
Thumpr Cams deliver incredible exhaust lope and impressive performance

Thumpr Camshafts are a new series of retro-fit hydraulic roller and hydraulic flat tappet cams designed for use in Small & Big Block Chevy, Ford 351 Windsor and Small Block Chrysler engines. The aggressive exhaust note of a Thumpr cams comes from a combination of early exhaust valve opening, long exhaust duration and a generous amount of intake and exhaust overlap – maximizing the rough-idling characteristics of the cams without negatively impacting power or streetability.
K-Kit, The Complete Kit Includes:
-Camshaft
-Lifters 
-Timing Chain Set
-Valve Springs
-Retainers 
-Valve Locks 
-Valve Stem Seals
-Assembly Lube
-Instructions