94 K5 4l60e to NV3500 swap near completion

[94 Beast]

So in January i completed a topend rebuild on the Blazer. This was directly followed by my 4l60e ****ting itself. So i decided to drop a NV3500 out of a 2001 1500 4x4. i got everything for this swap including a new input shaft for the transfer case and a 30 dollar pigtail just for the reverse lights. i went to finally put the NV3500 in today and wouldnt you know the input shaft is too long. My question is do i need a different input shaft or can i use a Cranshaft spacer and where can i find whichever one i need. I used a new flywheel and cutch that matched for the 94. the only real worry i have with the crankshaft spacer is that the starter may not reach the flywheel.

 

[toomany]

Did the Nv3500 come from behind an LS based motor? I beleive the LS motors use a different length input shaft than standard SBC stuff. Does the bell housing separate from trans? Maybe find a spacer to stick in there? I know there is a solution for this problem when using an Ls1 T56 on an SBC, I'll see if I can dig up that info, may be of some use.

 

[94 Beast]

All i know is that I got it from Just chevy trucks and they said it came out of an '01 silverado 1500 4x4. After sleeping on it over night i realized that the input shaft would be the best way to go i think. if i just add a crankshaft spacer it will put my slave cylinder closer to the clutch plate. however i still have the problem of the 3/4" gap between the bellhousing and engine. Is it possible to swap in an input shaft from an older model or do they make a shorter one for the '01.

Also, no, the bellhousing is integrated with the case. Really it should be as easy as my transfer case was and i just rip it apart and swap the long one for a shorter one but if it was that easy everyone would do it.

 

[Russell]

All i know is that I got it from Just chevy trucks and they said it came out of an '01 silverado 1500 4x4. After sleeping on it over night i realized that the input shaft would be the best way to go i think. if i just add a crankshaft spacer it will put my slave cylinder closer to the clutch plate. however i still have the problem of the 3/4" gap between the bellhousing and engine. Is it possible to swap in an input shaft from an older model or do they make a shorter one for the '01.

Also, no, the bellhousing is integrated with the case. Really it should be as easy as my transfer case was and i just rip it apart and swap the long one for a shorter one but if it was that easy everyone would do it.

Which transfer case are you putting behind it?

I installed an 04 NV3500 in behind a 6.2L diesel in my old 1985 K5 Jimmy with an NP241 and didn't have to do anything with the input shaft. I was just a standard 32 spline 6 bolt round pattern transfer case. An NP208 should bolt right up too.

 

[94 Beast]

wrong input shaft

I am talking about the input shaft from the transmission to the engine. I to have a NP 241 and I have already swapped the input shaft from that because the input shaft that fits the original 4l60e is 27 spline not 32.

I did talk to southwest gear today and they said that if I get one from an earlier year it will work. However after further research I have found that there is a step in the older one. They said it shouldn't matter but I am still sketchy on paying 125 for a SHOULD.

 

[Russell]

Hmm, this is strange. When I installed my 04 transmission from behind a 4.8l the input shaft for the transmission was exactly the right length. I didn't think that GM changed the manual transmission input shaft lengths at all.

Are you sure you got the input shaft all the way into the pilot bushing / bearing? I've had trouble with that before. I didn't even click into the realization that the problem you were having was with the Trans input shaft, because I didn't know it could even be a problem!