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valve body mod
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  1. 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...
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