NV3550 connected to an NP241

[clarkerussell]

My 4x4 conversion is coming together and I have sourced an NV3550 tranny for a fair price. I have an existing NP231 that was behind a 1988 4.0 Auto that I was thinking of using, but would rather have the NP241. I've read that the NP231's behind a 4.0 were always 23 spline input shafts.. is that correct?

 

As for the NP241, since they were behind Automatics, is the input shaft a different length?

 

Long story boiled down to a simple question... If I get a 2001 NV3550 and a late 90's NP241, will they match up?

 

Thanks for everyones help and patience.

[DirtyComanche]

You mean 242?

 

 

If so, it'll bolt to it.

[Oizarod115]

231s and 242s before 1990 were all 21 spline, 91+ all 23 spline.

 

there ARE different shaft lengths though i do not know what they are.

[jeepthing07]

What did the NV3550 come out of? If its out of a wrangler they are clocked higher and add to that the larger case of the NP241 and i don't think it would even come close to clearing the floor.

[87manche]

231s and 242s before 1990 were all 21 spline, 91+ all 23 spline.

 

there ARE different shaft lengths though i do not know what they are.

not quite true.

All t-cases behind the autos were 21 spline until the HO model year in 91. The AX-15 however has always had a 23 spline output, and Jeep started putting those in mid 89.

[Oizarod115]

good point. my bad. :oops:

[clarkerussell]

You mean 242?

 

 

If so, it'll bolt to it.

 

My mistake... Yes, it's an NP242... The manual tranny is out of a 2000 XJ.

[clarkerussell]

What did the NV3550 come out of? If its out of a wrangler they are clocked higher and add to that the larger case of the NP241 and i don't think it would even come close to clearing the floor.

 

The NV3550 is coming out of a 2000 XJ... Also, I meant to say NP242, not NP241... sorry...