Hot Rod Forum banner

valve body mod

  1. T-400 VB Mods

    Transmission - Rearend
    New to rebuilding the TH400. got one that was previously gone through by another builder and I have found some of the mods done that are common. One I'm trying to figure out has to do with the 1-2 accumulator valve in the valve body. the ATSG book shows 3 configs, 2 of which have a spool...