Picked up another toy, for free. a 1968 440. It has been bored over .030, 902 heads with bigger valves and Comp cams 1.5 rockers. As well as a torker 2 intake and cam. My question is in regards to the pistons. They are flap tops and the only part number I can find is 1730. I've googled it and can't find any specs. I do know the compression heighth measures out to 2.021 roughly. But I'd like to know the factory spec to decide if I want to stay with them or ditch em. So has anyone heard of these before?















