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'89 Blazer LS swapped DD/Adventure Rig

Overview Gallery Discussion
tRustyK5 said:
Some of us Ass-u-me'd you knew all the GM manual tranny's were 32 spline. :doah:
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Lol I'm 22 and have never fooled with a manual. I am quite disappointed in myself, I normally have my **** together and have done my research weeks in advance.... MY FAULT

It doesn't make sense to me that GM would make an auto and a manual with different outputs. That just means two different t-cases for them to deal with.

Its all good though. My 241 loved to pop out of 4HI; so she's getting a rebuild kit, chain, and input shaft. Win-Win, I just gotta wait another week to drive it...
 
I think GM felt the 27 spline wasn't burly enough for the manual trans. Aside from the early SM 465 most every manual trans was 32 spline. Later 465, NV4500, NV3500 as well as the TH400 and 4L80e.

Sounds like your 241 needed a freshening up anyways. :waytogo:
 
tRustyK5 said:
I think GM felt the 27 spline wasn't burly enough for the manual trans. Aside from the early SM 465 most every manual trans was 32 spline. Later 465, NV4500, NV3500 as well as the TH400 and 4L80e.

Sounds like your 241 needed a freshening up anyways. :waytogo:
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Thanks for the insight, you can bet your ass I'll know it in the future!
 
Ha, especially the NP883.


Try looking for an NP833. Typo on my part, sorry.

Martin
 
See if this works.

velmar003.jpg


Martin
 
I didn't know such a thing existed. Lol

That will not work though, mine will have to be configured in more of a diagonal shape. The stick is ahead and to the left of the tcase shifter.
 
MAX89K5 said:
The nv3500 shift tower does not line up with the factory indentation in the trans tunnel. I can make it work, but I will no longer be able to use the factory tcase shifter bezel.

The two are so close together that I will almost certainly have to use the same bezel for both shifters and use two boots. Not entirely sure how I'm going to do so yet.
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Noted.


Martin, what rig combinations would have had that combined bezel setup? I've not even heard of such. :dunno:
 
Here's what I'm up against :

This is a side view
e994fcf85022049a7a50e778b57cf671.jpg


The shift tower flange is 1/2" behind the tcase shifter... but because of the way the shift tower tapers as it gets closer to the floor board, I should be able to make it work. I just don't know if it can be executed in a clean way.




I'm leaning more and more towards moving the transmission crossmember forward enough to where I can use the factory tcase shifter bezel. It will also move the shift tower forward, where it "needs" to be in the trans tunnel.

My driveshafts already need to be addressed from when the blazer was lifted, so that's non-issue to have them modified if i move the transmission forward. I know this will worsen the front shaft angle, the stops are already ground out and I've never had an issue where it is now.

My motor mounts are adjustable so that's no big deal.

Exhaust is a non-issue

Is there anything I'm overlooking in regards to moving the crossmember?
 
After much consideration. (lol)

Almost certain I am going to do away with the factory tcase shifter in lieu of a JBfab unit. It is so compact that I can place it just about anywhere according to where my stick lands in the trans tunnel.

This will allow me to retain factory crossmember location (avoid costs involved), improve location of shifter stick (console to stick distance, think comfortability), cleaner overall installation, use full size shifter boot, and trash that bulky tcase shifter.

I will mount the jbfab unit in its "recessed" position so that the cable will be beneath the floor pan and have minimal visibility inside the cab.

I know mrk5 has a set up like this that he had to fab some stuff for, but now they offer a complete kit especially for np241.
4bb0d6c7eddb2640d3ab32c570ae897b.jpg
 
Why not just move the factory shifter? The rod is adjustable.

Martin
 
Hmmm I do have about 1.5" of room between console and shifter bezel... I'll look at it tomorrow.

Sometimes the most simple option is the best option! I tend to over analyze...
 
I had the same problem with my NV4500 swap. I believe the shifter is in the same location as the NV3500. Here's what I did:

uploadfromtaptalk1441863778337.jpg

I ditched the factory bezel and ran a factory 205 shifter boot. The trans boot is a universal Hurst unit. Even with my body lift the shifter tower height was a bit of a problem to get the universal boot to fit because I couldn't use a bigger one. This solution was only a semi-perminate type deal until I could figure out a custom machined boot retainer and doing a custome stitched vinyl boot for both shifters.

uploadfromtaptalk1441863778337.jpg
 
Chevy305 said:
I had the same problem with my NV4500 swap. I believe the shifter is in the same location as the NV3500. Here's what I did:

View attachment 174025

I ditched the factory bezel and ran a factory 205 shifter boot. The trans boot is a universal Hurst unit. Even with my body lift the shifter tower height was a bit of a problem to get the universal boot to fit because I couldn't use a bigger one. This solution was only a semi-perminate type deal until I could figure out a custom machined boot retainer and doing a custome stitched vinyl boot for both shifters.
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Thats exactly how mine is situated...

I think I will be able the move the factory t-case shifter back enough to allow for a full size shift boot.
 
Update :

Tcase parts showed up. Got a new chain, rebuild kit, and the 32 spline input. I am gonna try to tackle that this weekend.

Fingers crossed I'll be driving this thing next week!
 
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