Hydraulic - Thumpr Retro-Fit: High performance street, stock converter ok, best with 2000+converter and gears. Choppy/thumping idle.; 279/297 Advertised Duration, 227/241 Duration .050", .490"/.475" Lift, 107 Lobe Separation; Valve spring upgrade required
CA Residents: WARNING: Cancer and Reproductive Harm www.P65Warnings.ca.gov

