COMP Cams Big Mutha Thumpr Retro-Fit Hydraulic Roller Camshaft Complete Kit Lift: .570"/.554"
249-K11-602-8
Items You Need
Chevy 396-454 ci Big Block 1967-96 Non-Factory Roller Block
RPM Operating Range: 2500 to 6100
Cam Grind Number: 299THR7
Duration Advertised: Intake - 299, Exhaust - 319
Duration @ .050'': Intake - 243, Exhaust - 257
Valve Lift: Intake - .570, Exhaust - .554
Lobe Sep. Angle: 107°
Chevelle, Camaro, Corvette, Stingray, Silverado, C10, Firebird, Chevrolet, Big Block, Chevy, BBC, 454, 427, 502, 396, Caprice, Malibu, Impala, Nova, Monte Carlo, S10, 572
Street/strip, needs 9.5:1 compression, 2800+ stall, intake, gears and headers, very rough idle.
Specifications:
Thumpr Camshafts are available in three different grind profiles, each one of which will produce a rough, racy exhaust note and impressive amounts of horsepower and torque at a different rpm range. Their cutting-edge hydraulic roller design means that they will deliver a substantial power increase over an identical hydraulic flat tappet grind without sacrificing reliability or ease of maintenance. So look no further than the Thumpr line of camshafts - engineered to deliver that much sought-after ''thumping'' idle quality to everyone.
Features:Camshaft & Lifter Kits are indicated by a CL in their part number and include Camshaft, Lifters, Assembly Lube, Decals, and Instructions.
Complete Kits are indicated by a K in their part number and include Camshaft, Lifters, Timing Chain & Gears, Valve Springs, Retainers, Locks, Assembly Lube, Decals, and Instructions.
Motor Vehicles
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Tools:
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Electrical Cords
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