it needs to go to like .070 piston. i had it measured but dont have the measurment just remember what piston size it needed after bore.
Also i had a 350 4 bolt main 30 over dui distrubitor headers cam edelbrock carb wiend intake full rebuild on a s10 i just traded cause im bout to turn 16 and that wont be safe nor have good gas mileage.
and there aftermarket heads? ik only tbi and newer had the centerbolt heads.