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no , look for a 200r4 trans which has overdrive and the same lenghth as the th350


Wow...completely wrong answer. The 200-4R is the same length as the TH400. Not the TH350. The 700-R4 is the same length as the TH350. And yes....a B.O.P. TH400 will fit that 403 just fine. You'll have to locate a transmission cross member for the TH400 if it was originally a TH350.

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Q: Will a turbo 400 transmission fit on a 1978 trans am 403?
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