/6 to 340 swap

abodyjoe said

then you or whoever is building transmissions for you have no idea what you are doing.

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Never had to rebuild a 727. Adjust the bands, change filter and fluids, up the pressure, install a 4.2 kickdown lever, replace the seals, good to go. My only exception is early A-Body, then I'll run a 904 if it doesn't have a 4 speed.