About this product
Hydraulic - Mutha' Thumpr: High performance street/strip, needs 9:1 compression, 2500+ stall, intake, gears and headers, rough idle.
High performance street/strip, needs 9:1 compression, 2500+ stall, intake, gears and headers, rough idle.
Hydraulic - Mutha' Thumpr: High performance street/strip, needs 9:1 compression, 2500+ stall, intake, gears and headers, rough idle.; 287/304 Advertised Duration, 235/249 Duration .050", .510"/.495" Lift, 107 Lobe Separation; Valve spring upgrade required
Chevrolet GEN IV 396-454 Big Block Engines Originally Equipped with Flat Tappet Camshafts
Description supplied by JDMuscle through its current Shopify listing. Product, performance, and health claims are the seller’s and have not been independently verified by StorkScout.






