1.6 rockers with stock 318 cam??

Not much bowl work as we got another, untouched port, at 50.7 @ .100", 108.9 @ .200" 160.5 @ .300", 171.6 @ .400 and 171.6 @ .500".

The flows for the slightly worked port were, 69.7 @ .100", 117.7 @ .200", 155.8 @ .300" 168.7 @ .400 and 169.9 @ .500". Valve job but nothing fancy.

The nice port from 2 years ago, with a roughed in valve job on the 318 head, shows what a 675 head can really do.

79.6 @ .100"
138.1 @ .200"
188.8 @ .300"
230.0 @ .400"
266.0 @ .500"
270.8 @ .540".


Pretty sure there is even more flow available, but haven't had the inclination to test the head more.

whoa doggy!! not with stock valve diameter?
what size valve?
360 port window?