Fastduramax Posted July 26, 2018 Share Posted July 26, 2018 Ok 12 speed Guru's please help me out ! 88 RD688S 350 12spd pulled tranny out today and my replacement tranny is different in this way... It has a spring loaded plate against the housing that the input shaft passes through that the clutch brake presses against, the tranny I pulled out does not, the housing "snout" is actually longer making up for the space the spring loaded plate takes up on the rebuilt tranny so the clutch brake on my tranny presses against the housing instead of a spring loaded plate in other words.... Both TRTXL-1070B trannys, both have equal distance from either the spring loaded ring or housing snout on my tranny to the end of the input shaft... So million dollar question are they interchangeable with no other modifications? Thanks guys !! Quote Link to comment Share on other sites More sharing options...
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