Street/Strip Hydraulic Flat Tappet Cam - Chevrolet Big Block 312/320

Hydraulic Flat Tappet.Excellent cam for bracket racing applications and jet boats with B impeller, strong mid range and top end torque and HP. Needs 4500-5000 RPM stall converter, headers, 11:1+ compression ratio and 4.10+ gearing. Rough idle. ; Advertised Duration (Int/Exh): 312/320; Duration @ .050 (Int/Exh): 255/263; Gross Valve Lift (Int/Exh): .625/.630; LSA/ICL: 110/104; Valve Lash (Int/Exh): Hyd/Hyd; RPM Range: 4500-7000; Includes: Cam Only