For those that have done NV4500 swaps

[Rust Buster]

I'm in the middle of doing mine in a 72 K20 with a NP205 and GM HT383 crate engine. The question I have is regarding the crossmember. Advance Adapters sent a 2.5" square piece of tubing that the bottom of the tranny bolts to and then has the right holes to bolt to the crossmember.

I guess my question is do I use the tubing, then bolt to the stock rubber mounts (I bought new polurethane ones). It does this fine, but I am wondering if this raises the tranny too much for the driveline and/or mounting the cab.

Has anyone actually done this in a 67-72 GM truck? If so, what did you do?

[special-K]

If I hadn`t just sold my CheyenneSuper,I`d go out and give you a top of crossmember to floor measurement since the motor was out of it.I wonder if they would have you solid mount it.I`d think not.But,I can see that adding that tube would change alot in height.Is this an adaptor for the trans mount,so you are using the factory crossmember?I wondered if the made a conversion cross member for this swap.
I`ll see what measurements I can get from my manual K/20.I`d think if an adapter is needed at the croosmember mount that they would have made it from plate to avoid altering the alignment as much as possible.

[Rust Buster]

Yeah, the directions for the conversion that they give are totally useless...
I can't tell if it is to use as a solid mount or just as a spacer and then to bolt to the rubber ones. The bottom of the transmission where it bolts to has been modified to take the tubing, so I'm not sure. Guess I will just have to call in the morning.
Thanks!

[snj8198]

did you speak to a rep when you made your order? AA stocks trans mounts specific to your factory x-member and/or a custom x-member with mount if you would prefer, but i did not take them up on this offer. i mounted my trans mount to a small piece of c-channel. i can go measure it, but i would think what you received is the spacer between the x-member and trans mount and not an actual hard mount. that trans mount fits pretty high up in there.

[Rust Buster]

I think you're right. The more I look at it, the more it looks correct, just hard to judge since it's just a frame with an engine and tranny in there, so it all looks high. It all fit together pretty well, so we'll have to see

[snj8198]

over all you'll like the final assemby and that trans is great in all applications. using both the bell and t-case adapter adds a little length to the assembly which positions the trans shifter nicely in relation to the driver; however, if you are using a bench or buddy bucket the t-case shifter may be tight when shifted in 4hi.

[Rust Buster]

Do you have any pics of your setup? I'm trying to get the transfer case shifter attached and they gave no instructions to how the linkage extender attaches. I think I have it figure out but it interferes with some bolts on the tranny, so I just want to make sure. Also, I was going to write a new post, but I'll ask you here... Do you know where I can get the bolt that attaches the transfer case shifter to the transfer case linkage? I think I left it on the tranny and adapter I sold to special K. LMC doesn't appear to have it and I know it is a special bolt.
Thanks,
-Tim

[snj8198]

Rust, sorry but i do not have any pics of my truck or the build. i'll get with it and post some on the site soon. Our combos are a little different. I am running a custom 205 casing that was circular drilled to the 6 bolt pattern so the case mounts directly to the tran's tailshaft. i did this to eliminate the 10 spline coupler and adapter. I installed a 32 spline input gear in the t-case which engages the trans output shaft directly. but eliminating the adapter lead me to need a different stick linkage too. However, much to my surprise when i purchased my trans and case it came with a free ORD twin stick by mistake. Lucky me! so i made a bracket for the sticks to pivot off and am using heim joints for my shifter linkage assembly. this completed set up allowed my t-case shifter to sit further forward since the lack of adapter saved me a couple of inches, and i shortened the rods for the hiems so the sticks point forward a bit allowing more clrearance between 4hi and the bench seat. The only draw back to the way I set this up is that the trans boot and beauty ring im using (from a '99+ Chevy) is way to big and interfears with the nice twin stick boot from ORD. I moved these shifters inboard a bit to keep them away from the passenger side floor but ran into this problem so i just need to get creative.
Sorry this isn't helping you much, but good luck with your project! If you like rowing the gears then you'll really love that transmission. -steve

[vtblazer]

Great thread on this subject currently running over on CK5, check it out, might help.

It's for a doubler set up but maybe there's something you could get out of it, here's the link anyway.

http://coloradok5.com/forums/showthread.php?t=212062