Want to turn more rpms to make more power? Increase reliability? This is the kit for you.

No core required this is a set of brand new cylinder heads with upgraded valves springs and retainers. They have been lapped for proper mls gasket seal. These heads increase cooling, have a stronger rocker bridge, stronger valves , high rpm springs, billet retainers and newest version rocker arms. Three angle valve seats.  Heads are unported

Included (everything pictured):

heads x2

HD valves x4

high rpm single springs x4

billet retainers x4

valve spring shims x8

lash caps x4

intake gaskets x2

exhaust gaskets x2

head gaskets x2

valve cover gaskets x2

rocker arms x4

air deflection tins x2

hardware

Never assumes heads are ready to bolt on. Always verify valve lift clearances . Heads should be assembled by an engine builder.