Comp Cams K12-602-4 Big Mutha' Thumpr 243/257 Hydraulic Flat Cam K-Kit for Chevrolet Small Block
Key features
- •Street/strip, needs 9.5:1 compression, 2800+ stall, intake, gears and headers, very rough idle.
- •2,500-6,400 RPM Operating Range
- •243/257 Duration at .050". 107 Degree Lobe Separation Angle. 0.5"/0.486" Valve Lift
- •K Kits vary in their contents, but generally contain a camshaft, a set of lifters, valve springs, retainers, locks, valve seals, timing set, assembly lubricant, decals and instructions. Check description for more accurate listing of kit contents.
- •Early intake valve opening and long exhaust duration create optimum overlap for powerful, hard-hitting exhaust note. Best with aftermarket converters and more rear gear.
- •Perfect choice for muscle cars and street rods - Three unique cam designs: Thumpr, Mutha' Thumpr and Big Mutha' Thumpr deliver excellent horsepower gains and broad torque curve.
Comp Cams K12-602-4 Big Mutha' Thumpr 243/257 Hydraulic Flat Cam K-Kit for Chevrolet Small Block
List Price: $909.59$818.63DEALYou Save: $90.96 (10%)
Free shippingFree Returns – 30 daysFree Order CancellationSecure Payment2–3 Days DeliveryGet It June 23, 2026In Stock (1)No marketing spamNo account requiredFulfilment by FedEx / Amazon / UPS / ShipwirePayPal / Card Buyer Protection
