thanx.
And how i am going to make 9/9.5-1 CR?
if i use flat tops and a 72cc head i have 11-1 CR
(desktop dyno calculator)
and what if i use a milled head 0.060??
And why the 1.80 intake valves?? isn't a bigger valve better for breathing?
And what about lump porting the head or is it not useful to do?
