Quote Originally Posted by 305chevyboi
so jus cop some 350 heads with it cuz the motor is set up for 9:5:1 jus need some heads for it
your motor is not set up for any comp ratio without knowing the cc of the combustion chambers. if the pistions are rated for 9.5:1 you need to know with what CC head they were rated with that, probably 64cc or 76cc, 9.5:1 at 76cc will be way to high with the 58cc heads, the 64's you would be pushing your luck. get whatever head the pistions get there 9.5 rating from