-Gx200- 32 x 25 Moflow Head breather hole (factory is with hole, use no hole for 3" bore):Without Hole 815" base circle and

815" base circle and

Are you putting in a aftermarket pipe or motor swap and need some extra room

060" step height

450" head diameter

-uses gx390 style rockers

-Gx200- 32 x 25 Moflow Head breather hole (factory is with hole, use no hole for 3" bore):Without Hole 815" base circle andBillet cylinder head for small block gx200 clone engine 32mm intake and 25mm exhaust. Optimized flow and velocity. 14cc or 18cc combustion chamber Comes with valves, seats, and guides installed and ready to use. Supports . 500" lift with no modifications. Accepts all stock height components, (meaning you can reused your intake or exhaust parts). Works well with aftermarket roller rockets. Aftermarket pushrods and valve cover or spacer required. There