I was wondering if there is a big difference in HP between heads with
2.02 intake
1.57 exhaust
and
2.055 intake
1.60 exhaust
?

 

What is the compression?

 

Not sure... lets see..

"These heads can be milled .030" to increase the compression ratio by 1/2 of a point. This is an excellent street cylinder head with flow numbers exceeding well over 300 CFM on the intake runner and 210+ on the exhaust side"

?