Was curious about this today. Since I'm swaping a TH350 into an 88 GTA with an electric speedo, can't I just swap the tailshaft from the 700 to the 350? What parts would I all need to do this? Also I need to change something since I now have 3.70's in the rear.
Thanks
Danny

 

ttt

 

You need to use a THM 350 that came with a nine inch extension hsg. Usually found in pick-ups. Use the 700-R4 tailhousing along with a 1 1/2 inch thick spacer between the THM case and the 700 tail housing. We've done this conversion many times, Works well.

If you have any further questions or need additional information, please do not hesitate to contact us.

Don.