If my head was ported & polished for full drag force induction and I used the head for all motor and milled the head .030 to pump the compression to 11.3(h22a) will I lose power or gain less because of this? Also will it be better to report & polish the head for all motor? I'm thinking that's why i'm not producing much hp

 

head porter would have to see the head and get your spec's to know if it will work,or need to be redone for all motor.Since it's already been run thru, dont know what's been done from stock.

 

I c.. thanks for the info