Borg Warner T5 Transmission Install.

[bkonsugar]

I'm looking to install a Borg-Warner T5 in my '73.  From the different comments I've read, the rear transmission cross-member for the change seems to cause a lot of heartburn due to differences in mounting point locations on the two transmissions.   This transmission came from an '83.  In '83 both the Nissan 5 speed and the Borg-Warner T5 were options.  That being the case, were there different rear cross-members for the Nissan 5 speed and the T5?  If so, why won't the T5 cross-member work?  Or, were the body mounting points in different locations?  

[Zed Head]

I'm fairly sure that I've read that the ZX crossmember is flipped when you install the T5 in place of the 71B.  Search around for instructions on swapping in to a ZX and you might see something.  You'll need a custom length propeller shaft also.

 

Many seem to think that the T5 doesn't really offer much over the 71B.  "T5" is a buzz term that sounds like a strong transmission, but really there were tens or hundreds of variations,some strong, some weak.  FS5R90A is the correct way to identify it.  Here's a good link describing the various transmissions.  The 71B seems to handle about the same power, according to various threads I've seen.

 

http://www.az-zbum.com/information.transmission.shtml

[madkaw]

It's a little more than just flipping the crossmember-there is some fabrication involved. Biggest advantage to the BW T-5 is the unlimited choices of shifters. The trans shifts very precisely and notchy at the same time with a quality shifter. The gearing is not a big deal unless you are racing and are specifically looking for close ratio performance.

Disadvantages: dedicated DS that is mated to the proper diff yoke. Some fabrication needed.