TH 350 to a TH 400

[Berlinetta1981]

Alright I'm kinda confused. my 81 had a TH350 in it and now I'm putting a TH400 in. Do I need to buy a different tranny crossmember for the th400 or do you just drill different holes into the subframe so it will mount up?

[ZS10]

th400 takes a different x member.

[Berlinetta1981]

and then if i buy that i shouldnt have to re drill any mounting holes in the frame?


I'm just curious because to me they look pretty much the same the only difference i see is where the tranny mount is

[warped]

There have been several threads in the past week or 2 about switching from a 350 to a 400. You can search back to see some of the responses. For the crossmember, you can, depending on year, either move back and drill new holes, get the right one, or cut the mounting tab off the existing member, and weld it back on the front. Jake explained which years would work with moving the crossmember back in one of those posts about a week ago. Good luck.

[Berlinetta1981]

alright thanks