M800 M900 series T-Case

[mbent1911]

Will the 900 series transfer case work in the 800 series trucks ?

 

[Sephirothq]

good question. I would like to know this as well.

 

[Csm Davis]

Short answer yes

 

[bbf]

i dont think so the case are diff
the 900 case is junk

 

[Sephirothq]

Why is the 900 case Junk? You can't make a statement like that with nothing to back it up.

 

[mbent1911]

If the 900 is not that good ,what is this best case to use the sprag works in reverse on my truck but not forward. The 900 is airlock what can be done to the 800 to make it more dependable?

 

[Sephirothq]

I don't know anything that says the 900 case is no good. I never heard of anything and one person making a staement without any proof doesn't mean anything at all.


This is how bad information gets started. enough people say something and it becomes fact.

 

[Ferroequinologist]

You can put a 900 series T-case in an 800 series. For that matter, a M39 series, like I'm going to do.

Search is your friend!

http://www.steelsoldiers.com/5-ton-...818-transfer-case-upgrade-t-138-t-1138-a.html

 

[clinto]

I don't know anything that says the 900 case is no good. I never heard of anything and one person making a staement without any proof doesn't mean anything at all.


This is how bad information gets started. enough people say something and it becomes fact.

bbf is probably referring to the issues regarding not using reverse in low range.

 

[hemichallenger]

They are not a easy swap. It can be done.

 

[73m819]

Ask OPECOM (?) he did the swap in his 818/109

 

[Sephirothq]

That has more to do with the gear ratios and not how strong the case is.

bbf is probably referring to the issues regarding not using reverse in low range.

 

[73m819]

bbf is probably referring to the issues regarding not using reverse in low range.

That has more to do with the gear ratios and not how strong the case is.[/QUOTE]

It has more to do with OP ERROR then anything else, In the 900s, the front wheel drive is engaged AUTOMATICALY when the tcase is shifted into low range (there is a fix for this), when LEAD FOOT GI JOE slams into reverse and floors it, there is a LOT of NOSLIP torque that has to go somewhere, so instead of spending the money to teach LEAD FOOT how to drive a BIG, HEAVY ALL WHEEL DRIVE TRUCK, it is cheaper to buy stickers that say "DO NOT USE REVERSE IN LOW RANGE"

Just for fun, shift your deuce or 5t tcase into low range and into reverse, wind the engine up then dump the clutch, do this a few times, watch the results (won't get many times to do this)

 

[Csm Davis]

As to it being a hard swap should be almost bolt in I have all the parts you would need.

 

[seano11]

Very interested in this thread

 

[mbent1911]

Thanks for the info I'll might give it a try.

 

[m16ty]

I run my M932 in low range reverse all the time. I'm not going to shift out of low range just to back up. I also have the "automatic 6X6 low range" feature disabled. I've never had a t-case problem but don't drive like a madman either.

The air-shift case should be a good upgrade.