M1009 Transfer case

[mkcoen]

Will an NP205 fit in the M1009?

If so, what additional items need to be swapped out?

 

[Westech]

yeah if it was in back of a TH400. I don't know if the drive shafts will swap or not but I know it should bolt in place.

 

[Croatan_Kid]

There were 3 different output shaft lengths on the TH400. You'll have to change yours or the whole transmission to work with an NP205.

You will need the adapter whether it be the figure 8 or *round pattern* (EXTREMELY hard to find and quite expensive when you do!)

You'll need a new rear driveshaft because chances are the 205 you get will be fixed yoke and not slip yoke like an NP208.

You may or may not need a new front driveshaft, depends on what output yoke/flange the 205 you get has.

And obviously, you'll need a 32 spline Chevy NP205 and a shifter!

 

[kennyw]

There were 3 different output shaft lengths on the TH400. You'll have to change yours or the whole transmission to work with an NP205.

3 output shafts is true, but the NP208 version and the round pattern NP205 share the same output shaft. The other two are the NP203 version and the figure 8 NP205 version. Avoid those if you don't want to change out or rebuild the transmission.

You will need the adapter whether it be the figure 8 or *round pattern* (EXTREMELY hard to find and quite expensive when you do!)

I would look for the round pattern NP205, shifter and adapter. Found in ~'85 and up Chevy K30 civi trucks. You will want to grab the driveshafts from the donor as well. The front shaft should work in your M1009, but the rear shaft will need to be cut down and then run an adapter u-joint for the rear axle.

 

[mkcoen]

Okay so I'll ask this dumb question. The HMMVW has either the 218 or 242 are either of these compatible with the M1009?

 

[kennyw]

Okay so I'll ask this dumb question. The HMMVW has either the 218 or 242 are either of these compatible with the M1009?

I don't remember which side the tcase drop is on for the HMMVW. I believe they used the same TH400 transmission though, so if they drop on the correct side it may be possible to use them.

 

[Westech]

just the hummer case is full time 4x4... has that 4 high and low lock stuff. Never had to put it in lock yet and we have been in some stuff.

 

[rottiedog]

Got a bunch of NP218's if you need one of them.....Bought them just to have for my M1009 too. Has fixed yokes so a change will be needed for the rear driveshaft.

 

[Skip]

trying to learn

Does the full/part time 4x4 question come into play?

 

[kennyw]

Does the full/part time 4x4 question come into play?

I forgot about the full time 4x4 part... so you would need to put in drive slugs or leave your lockouts locked 100% of the time to use it. Nothing wrong with full time 4x4 if you want all wheel drive.