Be very careful with the short radious especially on the exhaust port.
Fraser
I ported the exhaust side only on mine.
Didn't really enlarge it much or change the shape,
just opened the outlets to match the inlets of the exh. mani,
leveled the guides, and smoothed everything.
paul
Cool the cutaway pictures are very helpful! how much can one gain from a good port job? im running the stage II cam that SCP sells if that helps.
Have yet to see anyone make 300 rwhp without significant head porting. With that cam, good heads, MP intake, and 42's or more, exhaust ... 300 should be easy with just 10% OD. Maybe 30 horses, depending.
with everything i have in my member page i estimate im making 260-270 rwhp.
of course i havent been on a dyno, thats why its an estimate based on my 1/4 mile time. i need to get on a dyno and verify my AFR.
but anyways, i'd put a cam in (even a mild one) if i was gonna pull heads off to port them
just a thought
Just a thought, I make 274 and trap 104. If your are making 260-270 I think you'd be trapping 100+. But Id dyno it anyway and see where you're at.
Corey