...
Finished flow numbers:
Lift-------in/ex----ex w-2" tube
.100---71.3/61.5
.200--149.2/115.9
.300--211.2/157.8
.400--267.4/179.3
.500--306.7/193.2---221.1
.550--319.7/199.3---226.8
.600--318.6/205.4---236.2
.650--320.5/209.8---241.9
.700--321.6/213.9---248.3
FWIW, Dwayne's last test on my old hand-ported Stage VIs:
Stage VI test #1 cylinder:
Lift -- Int / Exh (no tube)
.100 --- 69 / 53
.200 -- 143 / 108
.300 -- 213 / 146
.400 -- 262 / 181
.500 -- 293 / 211
.550 -- 305 / 222
.600 -- 307 / 231
.650 -- 307 / 237
.700 -- 307 / 243
And these were good enough for 600+ HP on a pump-gas 440 w/ the right combination of parts. However, the subject heads are going on something quite a bit different, from the sound of things.
