Quote Originally Posted by 69elko
This was one of my first port jobs, the exhaust didn't turn out quite as well as I'd hoped for but I did it without a flowbench. This flowtest was taken at GrommRacingHeads.

intake/exhaust flow @ 28 inches
.100 lift- 67/63.39
.200 lift- 153/108
.300 lift- 213/130
.400 lift- 252/149
.500 lift- 271/165

Closed chamber 96.4cc
255cc intake runner
The heads I used in DD have higher flow than what you posted .............

Kitz