In the very-near future I'm going to re-build my original '57 312 street motor (ECZ-G heads & original "T-bird" cam) for use this coming summer.  I'm interested to know what the range of original factory piston weights was so that I can try to select new pistons of similar weights - this to eliminate the need to re-balance the original crank.

Any and all feedback / advice appreciated.

Thanks, JLB

55 Ford Crown Victoria Steel Top