73 gmc transmission/transfer case mount questions

[chrissilva]

I have a 73 ck2500 that im putting a blueprint 400 motor in
The truck originally came with a 350 turbo trans and a np205 transfer case.
Im putting Ina 400 turbo with a new np205 transfer case.im trying to order new trans and transfer case mounts and keep getting different info on what it takes.
In my brother's truck catalog it shows trans mounts and transfer case mounts.
My question is this
Will I need two mounts that bolt to transfer case adapter and two more that bolt up to the side of the transfer case?
Also will that leave me room for the TRM support bracket that bolts to rear output housing then to the frame?
Thanks for any info

Im trying

 

[nvrenuf]

Square body 4wd’s just have mounts under the foot of the adapter between the trans and tcase.

There are 2 styles of mounting bushings depending on what style of adapter you have, one style (2 separate sets of bushings) for ‘84 and older vs ‘85+ (sort of a bigger rectangular block).

Do you have a picture of your set up hosted anywhere that we can see?

 

[Wes Harden]

are the th400 and the np205 currently mated together ? The Th400 need a different adapter than the th350 used. Also the th400 is 32 spline out as opposed to the th350 27 spline. This all assumes you aren't using a divorced T case.

You only need the T case mount. The crossmember will only align with the T case adapter. Highly discourage any mounts from t case body to frame rail. Having a connection from the frame to the t case put stress on the trans bell housing, when the frame twist, and it can tear.