ill polish the crank, looking for higher compression pistons, will run stock rods w ARP bolts. Get her balanced buy new bearings and rings of course. What is a good compression ratio to shoot for? 9.5-10:1 ish. Street car/tire fryer. Looking for up to 6000 RPMs w some torque. 3:55 gears Will be going in a 73 swinger w 70 nose, doors, and rear bumper (70 look alike). Nothing else is original so why not mini tub and big block the girl.