Same head, same port as above, but with seats recut, mild
back cut on valves, and the bowls and short turns blended.
No rework on the pinch area or around the guide boss.
Lift------in/ex
.100----70/56
.200---146/105
.300---207/142
.400---244/168
.500---267/186
.600---271/201
.700---272/214
Ootb RPM head, ede valve job & valves
Lift-----in/ex
.100----67/50
.200---141/106
.300---209/144
.400---245/170
.500---269/186
.600---275/196
.700---278/201
Just keep in mind, not all ports on all heads flow the same.
These numbers are what these particular ports flowed on
these particular heads.