HYDRAULIC - Big Mutha' Thumpr: Street/strip, needs 9.5:1 compression, 2800+ stall, intake, gears and headers, very rough idle.. 295/313 Advertised Duration, 243/257 Duration @ .050 inch, .500 inch/.486 inch Lift, 107 Lobe Separation. Valve spring upgrade required.
Hydraulic flat tappet style camshaft and lifter. Offers improved throttle response and torque. Use only stock ratio rocker arms which are not included with the kit. Dual springs should not be included. Retainers, locks, valve stem seals, timing chain and gears, pushrods, rocker arms, gaskets and lifters are not included.