not sure how much compression Cam is a speedway tight lash flat tappet
[email protected] int 252 exh 260 lobe separation is 106 gross valve lift int .542 exh .555 spring pressure is 120. Heads are Aluminum Pro comp 190cc runners 64cc chambers set up for my cam. Victor Jr intake no porting or polishing. Carb is a Holley 390 4brl 30 over flat top pistons car weights 2800 wet with driver.