Overdrive unit to fit a M35A2 and a 5 Ton

[FrankCopren]

Overdrive unit to fit a M35A2 and a 5 Ton
Looking for any brand overdrive unit that will fit between the transfer case and the first
Differential
Best case scenario, it will be two speed
Direct and overdrive
Anyone have any helpful suggestions??

 

[NDT]

If you wedge a Brownie Box in there, the driveshaft between the box and the forward tandem will be about 18" long. Does that raise any issues in your mind? Think articulation.

 

[R Racing]

What model 5 ton ?

 

[FrankCopren]

My 1948 Pete has a 3 speed brownie, direct, under and over
It is a beast (needed a fork lift to install it
I am looking for something two speeds and 1/3 smaller and lighter
Any ideas?

 

[clinto]

In your deuce, the absolute best choice would be Waterloo's .69 overdrive kit. This is the best choice for more speed or less rpm's.

http://www.waterloospecialties.com/overdrive/index.html

For your 5 ton, I don't know what the best choice would be.

There is a guy here who did an overdrive box South of the transfer, but like the poster above said, the driveshaft was very short and I personally wouldn't do it that way, but the guy said he hadn't had any problems.

http://www.steelsoldiers.com/showthread.php?26335-1970-Duce-restored-with-a-7041-spicer-aux-gear-box

 

[doghead]

If you want to discuss this, please post in the forums(or search them and read the other similar thread topics).

If you want a part, post here in the parts wanted (classifieds).

Any discussion here will be lost.

 

[gimpyrobb]

If your 5ton has a multifuel, it probably has the 1:1 5th gear. Just swap in an O/D trans from an 818.

 

[steve6x6x6]

This is not a good idea, if you forget to drop it back to direct and go for low range. Double OD do not work.

 

[panzerwillie]

Who makes that unit steve?

 

[topo]

When swapping a multifuel 6352 to a m818 6453 over drive how much speed is gained ?

 

[gimpyrobb]

No clue. The O/D ratio should be listed if you google spicer 6453.(edit, Spicer info here)
http://www.pgttruckparts.com/Spicer-TTC-6453-A-5-speed-transmission-s/2523.htm
Looks like .78

Also, for O.P. the newer 939 series trucks have an overdrive T-case. That could be an option too.

 

[doghead]

Moved to forums since nobody understood my post.

 

[gimpyrobb]

I understood it, your just not part of the "in crowd".

 

[doghead]

I may not be part of the "in crowd", but I can make you part of the "out crowd".

 

[Hainebd]

Be nice not everyone is as smart as you are! Even GOD made a mistake every now and then. Second mistake was Woman. Can you guess what the first mistake was?

now OD t-case? I need more input on that!

 

[Jeepsinker]

All of the M939 series trucks came from the factory with and overdriven transfer case in forward gears and underdriven in reverse to compensate for the automatic transmission without a real overdrive.
The lower reverse gear is why you aren't supposed to back up with the transfer in low range. Too much torque/ reduction, it damages the case.

 

[spicergear]

Typically damages the case at the front drop because of the automatic low range front diff pull in. Take the washer off of the linkage and control the front axle on your own by the switch in the cab. The Allison with the multiplication of the torque converter can hit it pretty hard and with the front axle pulled in, something's gotta give because you won't spin the front tires like you may be able to slip the tandems. Not all trucks had the low and reverse locked out. I'm offroad 90% of the time and hauling 50% of that time with return loads. Use your head, pull the that washer off the hi/low linkage and use the truck. Probably the most expensive washer in the service. What's new five ton t-case cost the military?