Quote:
Originally Posted by GRADYS Performance
If you swap a TH700R4/4L60 transmission in place of a TH350 Check your driveshaft length to verify you have the proper travel. There are at least 2 different lengths of TH350 transmissions, None of which are the same length as a TH700R4/4L60 transmission.
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When the performance shop installed mine, the 700r4 length was within .25" of the TCI TH350 I as replacing. We didn't have to change anything, including the cross member. Maybe I was lucky somehow. All I know is what we did and how it turned out.