Thank's Pat..........Got looking at pistons and they are the je 700 pistons.

It sure is nice that this engine, I bought went from a plain 454 to a......................... 10051107 Bowtie block and 502 ci.

Quote Originally Posted by pat mccarthy View Post
No ......509 .the 502 GM use a je 700 pistons at 4.470 bore if gm and a 4.000 crank