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190 cc intake runner
hydraulic or solid camshaft
1.437 single spring .650 max lift
64 cc combustion chamber
2.020 severe duty stainless intake valve
1.600 severe duty stainless exhaust valves
Manley 3/8 rocker studs
Manley 5/16 guide plates
Billet Machined 10 degree Super Locks
Herbert performance valve springs
Herbert Chrome Moly 10 degree retainers

190cc head flow numbers

.400 lift 222/165

.500 lift 253/180

.600 lift 279/181

.700 lift 287/182