ZL13 Hyd. Roller Camshaft
Steppin' up to some real power, this aggressive cam is intended for custom built engines 402ci and larger with at least 11.0 to 1 compression ratio and 225cc heads. This cam with its 231/237 duration, has a really choppy idle and the .592"/.599" lift requires pistons with larger valve reliefs and our 6.vps515 valve springs. This is an awesome cam for a track day car that is still streetable. Not suited for smaller displacement engines if intended for the street. Hardened pushrods required.