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I'm not an expert on this tranny. But I thought I remembered reading on some old posts here that the Early M35's had 0.79 fifth gears and the later ones had 0.75 OD 5th gears. I could be wrong. The problem is if you go with too deep of an OD gear then the engine might lug & you'll be stuck in...

Is it possible to flip a single-output PTO shaft going to the winch to face rearward for a PTO hydraulic pump? I am aware of the dual output PTO's but I can't find one for a reasonable price. A future tranny swap that I really want to do will probably force me to use a hydraulic winch up...

Stock overdrive is 0.79 0.79 x 6.72differential = 5.308 Allison, for example 3560, overdrive is 0.65 0.65 x 6.72 = 4.368 2600 RPM's/5.308 = 489.8 axle turns per minute = 56mph stock tires 2600 RPM's/4.368 = 595.2 axle turns per minute = 68mph stock tires Add taller tires & you are...

DESTROKED: Cummins Conversions They have the flex plates & SAE to Cummins adapters. Right now they only have 1000 series transmission stuff. But I'm sure if you email them they would tell you exactly what you would need for a 2000 or 3000 series Allison to bolt to a Cummins. Stand alone ECU...

Even if you don't use it once a decade, winches just have that "coolness" factor when you see them. However, most people mount them on the front bumper. They really should be mounted to the rear instead. The guy who just got stuck in the snow comes to mind. A rear winch + tree strap would...

You are correct, I'm thinking of the NV4500. I thought they fixed that thing. The spacing I am referring to is both the gear spacing, as in 3rd to 4th ratio jump, and also the physical shifting positions. 1,2,3 & R are tight together. 4th & 5th are way over in Egypt and confusing. 4th is...

What's there to say? Ultra strong Bolt behind Dodge/Cummins w/o adapters Low granny High overdrive Can handle anything you would want out of an M35, including vehicle weight concerns. Bolt directly to Altas rock crawler transfer cases for ultimate gear selection off road. early versions had...

I found out the problem is the government supplier for the A3 w/dual MC circuits will not release the MC to the general public. That would have been the logical, viable upgrade. But if the government wants to be a bung hole ... I'll go with HydroMax. Like the dual circuit A3 is Space Shuttle...

Allison 6 speed or NV3500 stick + Atlas transfer case w/military strength output = 3 way gear splitter. O.D. 0.65 from Allison Granny up to 10.5 from Atlas More than enough physical drivetrain space if you have the $$

Don't forget the Cummins 5.9 is 1100 lbs compared to the multifuel at about 1600. That extra 500 lbs could go to a really nice 6 sp. auto like a 2400 or 3500 series Allison :wink:

The hardest part is going to be the brake pedal. I can get the pump, booster & mc w/o too much trouble. The brake pedal, however, will probably require my actually going to a junkyard. Grumble, grumble, grumble. The nearest diesel yard is about 40 miles away and a real dump, no pun intended...

Volume w/stock MC is not a problem. I am looking for better than stock performance. I've looked at the dual airpack systems & they are okay for the stock system & 2 would give redundancy w/split MC. The Hydromax Spicer guy is right. Pull the air stuff off & run pure hydraulics. You'll stop...

Jake, I can't guarantee flawless results. But here is what I plan to do. I will source out a 6x4 Hydromax. 6 meaning 6 wheels, 4 meaning 4 rear drive wheels (Kodiak doesn't come in 6x6 configuration) I will then go to my flat, undisturbed patch of asphalt & run a few trials of say 50 to 0...

The Kodiak 7500 tandem axle runs 2000 psi. The stock M35 runs 1800 I'm thinking a bump stop on the brake pedal limiting it to 1800 psi would be ideal. but for this I'll have to get a psi meter. The Kodiak runs 4 70mm pistons per wheel up front, disc brakes. The M35 runs 2 wheel cylinders...

Okay, I think I've found the most likely "compatible" master cylinder using the HydroMax boosting system. It turn out that all of the fairly new Chevy Kodiak & GMC Topkicks up to the C7500 series use the HydroMax. Anything from 2000ish up should have it. The C8500 used to use air brakes but...

correct. someone wanted to know if doing dual or even triple MC's was possible. Yes it is, but A good single MC choice is better. Just a "for example" picture.

BTW, Somebody wanted to know what a triple master cylinder looks like attached to the pedal: http://www.summitracing.com/parts/TIL-72-605?autofilter=1∂=TIL-72-605

Google "Klam driveline retarder" or "Telma driveline retarder" They do not generate useful electricity. They use EM eddy currents to dissipate vehicle Kinetic Energy as heat.

Would you happen to know the exact diameter & throw of the stock master cylinder?

There is another, more expensive option. Electric driveline retarders would be the ultimate failsafe, redundant brake system. But at $6K + it would be worth more than the whole truck!