Swapping out iron J 202 heads for aluminum

Yes, very small cam in a 408
Retro-Fit Hydraulic Roller. Great mid range torque and power. Likes 2000 RPM stall converter and works great in towing applications with lower gearing. Largest for inboard/outboard performance marine use. ;Advertised Duration (Int/Exh): 270/279 ;Duration @ .050 (Int/Exh): 219/227 ;Gross Valve Lift (Int/Exh): .515/.530 ;LSA/ICL: 112/106 ;Valve Lash (Int/Exh): Hyd/Hyd ;RPM Range: 1800-5800