th350 to th400

[mtnman210]

I'm going to switch the tranny in my blazer from a 350 to a 400. It's a 77k5 with a sb350 and a 203 transfer-case. Anybody who has done this know what kind of problems I'm going to run into doing the swap.

 

[4X4HIGH]

You are going to need the very rare TH400 version 203 with adapter. Also you will be doing driveline work as well.

 

[mtnman210]

thanks...thats kinda what i've been hearing.

 

[muscle]

i just completed a th350/208 to th400/208 conversion. lots ive learned with adapters, crossmembers, kickdown switches. still need to get drivelines redone but all in all i do believe its worth it. pm me if you need more info

 

[mtnman210]

awesome thanks I'll probably be picking your brain a little later