OK...so here are the ex numbers, keep in mind i used a 1.65 flow pipe...i worked the snot out of the exhaust 'roof especially'...so that means back to work on the intake port so that these heads have a better N/A flow ratio...
the exh flow on my bench stock 'as cast' with 1.65 flow pipe peaks at about 132 cfm
here are the ported numbers from the port shown in my previous post.
-----cfm@lift----28'' w/ 1.65 flow pipe
.100--n/a
.200--96
.300--132
.400--148
.500--159
.600--179
w/o flow pipe, peak is 156cfm....
the exhaust ports on a 318 head basically kick *** for such a tiny port, the floor is sweet...and even with NO port window enlarging they flow fat.
