CK5
Register an account today to become a member! Once signed in, you'll be able to participate on this site by adding your own topics and posts, as well as connect with other members.

A 6x6 theory

The Griff

High drag, low speed
 Premium
GMOTM Winner
Joined
Sep 2, 2012
Posts
4,820
Reaction score
10,138
Location
Fieldon Illinois
Earlier today I let my mind go to its little Frankenstein garage area, and I came up with an idea. Could you make a 6x6 by putting a second transfer case backwards and using an offset diff axle as the middle axle?

6x6 theory.png
 
Good thinking outside the norm but you're about 70 yrs too late.
Dodge did it in '44. WC -63
id_wc62_700_02.jpg

Never owned one but knew a guy who did.
Rear axle set up is wacky. Not like highway tractors but twin drive shafts to t-case using PTO to drive rear axle!
This is a model but is extremely accurate to real setup.
72_DodgeWC63_07.jpg

Look thru this resto album and you'll get a good idea of what Dodge did.
https://plus.google.com/photos/111844354492279871182/albums/5359210788038655137?banner=pwa
 
Interesting old truck there, Always liked the old Power Wagons, never knew there was a military 6x6 variant.

I wonder though, I'm doubtful on the old Dodge, but what if you could, if you were so inclined, go to just 2wd? Since it is a transfer case, you could have 2wd, 4wd, or 6wd, Although having one in High and the other in Low could be interesting, probably in a bad way.
 
Those old WCs were full time 4wd. You had hi or low or neutral and about 35 mph.
I say go for 8x8! Two front drivers and two rear drivers on a Suburban!

Seeing you opened the multi axle idea, check out these kooky Russians (I think Russian) and their off road multi axle trucks. They sure aren't nice to them!
10 ton truck in 5' of mud…
http://www.youtube.com/watch?v=NPDwykpH9K8
 
I think the m211 m135 series (?) 1950s GM 2 1/2 ton trucks had a similar transfer case to the picture of the model above. They did not have top loader axles.

These trucks are not easy to find, but they are undesirable. I've seen them for sale very cheap and in junkyards.

image.jpg
 
Last edited:
I've seen a few of those 6x6's in local junkyards--the transfer case is a Rockwell HUGE beast that weighs 500 lbs probably...the shafts coming out of it that drive the rear most axle looked rather dinky to me,compared to the size of the other "main" shaft and the size of the truck it had to propel...but I guess it was proven to work,or they would have upgraded to a larger one..

Using a truck like the one pictured above would be the simplest way to get a 6x6...one junkyard that bought several of those at government auction uses 2 of them as yard trucks to drag cars around,haul parts,and plow..one still has the multi-fuel Continental diesel,one of the others they swapped in a 454 and TH400 from an old motor home...the think is an awesome beast..another one they had ,they put a 250 straight six chevy in it,it did OK but the engine was tired and started blowing oil,so the parked it..

I have seen come custom "tandem axle" trucks like a 72 Suburban that guys did at home,one had a V-drive case from an inboard engine boat to "split" the driveshafts from one to two,so one could power the second axle..
 
There was a truck in pedersons that had a th400/205 and a divorced 203. The 203 was backwards, being driven threw the rear output to dual 14 bolts.

Really similar to the gmc 6x6 setup.
 
We have one of those old GMC's in the junkyard here too, there not using it though, someone scrapped it.

Never looked too close at it, but I know it still has the old multifuel engine in it.
 
The GMC's didn't have multifuel engines. Old White inline 6's.

The Kaiser M35 family of Deuces brought in the Rockwell axles and multifuel engines (but originally were gassers too).
 
I believe the NP200 transfer case (found in the M-715 and M-37s) can be converted to a dual rear output. It's divorce mounted so that would make it easier to swap
 
The GMC's didn't have multifuel engines. Old White inline 6's.

The Kaiser M35 family of Deuces brought in the Rockwell axles and multifuel engines (but originally were gassers too).

It just looked like it was the old inline 6, I just assumed it was a multifuel.
 
My computer got kicked offline while trying to read the M-715 build,dont know why,it just started running the hard drive for several minutes and refused to download any more pictures--had to restart it...maybe its a fluke,but I'm staying off that site...:doah:...
 

Latest Posts

Top Bottom