mine are 452's. All I know is the compression height was slightly higher than the ones that came out of it, tho it had .030-over pistons in it when I took it apart - it looked like it had been rebuilt...or at least 'refreshed' at least once - I do not know if they were factory spec compression height slugs but they were definitely not anything fancy - basic flat tops.
My best guess on CR now is between 8.5 and 9.5-1
02 Dakota QuadCab 4x4 - 440/46rh/Atlas4/D60/14B/40" Toyos (...in work...)
Last edited by 'Mad Max'; 01-30-2019 at 12:51 PM.