Fluffaluffigas

Hi guys! I know this has been beat to death but I'm curious about my particular situation for my 85'.

I'm swapping to my dad's TH350 with a 6" tailshaft. I know this requires me to get a longer driveshaft. My question is, with the 6" tailshaft and longer driveshaft, does this allow me to still use the stock cross-member as if I had a TH350 with the 9" tailshaft instead? I might get an updated cross-member with the torque arm relocation, but I just want to explore my options! Thank you in advance.

-Zach

OrangeBird

iTrader: (1)

Does the TH350 have a third gen style torque arm mount ?

sofakingdom

iTrader: (1)

AFAIK no. The mount is in the same place regardless of the extension housing & output shaft length.

There used to be a thing you could buy that added a torque arm mount, a little plate sort of deal that went between the case and the EH. Haven't seen it for many a year though. I'm kinda thinking you'll be looking at an aftermarket crossmember at this point.

Fluffaluffigas

I don’t think so, it’s in his 79’ currently. I presume I’ll have to get the conversion kit as far as the mount goes for sure.

roadthrills

You need a crossmember from an '82-83 that had a TH200c. As far as the torque arm, you'll need to fab some type of bracket. The TH200c does NOT have a removeable tailshaft housing. The F body units had the mount cast right into the trans body.

Aaron R.

I realize this advice probably will be ignored, but you would be better off keeping that 700R4 and just keep it working right the way it was designed.

RedLeader289

iTrader: (2)

Stock crossmember will work assuming you can find one of these:

i had one, made by B&M, but sold it when I pulled my TH350 and swapped in a T-5.