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Discussion Starter · #1 ·
i got a question about swapping trannys.. my dad has a 76 blazer with a 400 and a th400 tranny in it.. well the tranny went out of it. We have a th350 out of a 76 car, will this trans go into the truck, or do you have to use some sort of adapter or anything? thanks
 

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For the main part you will be better of rebuilding the th400 or getting another 4x4 one. The th350 has a diffrent spline count on the output shaft (27 on th350 to 32 on th400). Also the length of the output shaft is probably to long since its from a car. This mean the output shft has to be changed by taking th tranny apart. Also the bolt pattern on the back of the tranny is diffrent. So a diffrent adapter would be needed.
 
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