Deuce with 6v92T Detroit and transmission.....????

[Ryan123]

The 939 series have a axle ratio of 6.44 to 1 , not far off from the 6.72 to 1 in a deuce.

well at 2300 rpms that gives ya 43 mph with 43" tires

 

[m-35tom]

Well mine is not a 5 ton it's an m35a2 what are your axle ratios because according to my calculations I would get 41 mph at 2300 rpm with your transmission so I'm not doing anything the hard way. The duece is geared at 6.72:1 and with a 10.555 foot rolling circumference at 2300 rpm that's 41 mph....and if I recall correct that trans cannot handle to power of a 6v92 turbo. It is not rated for it.

for the math to be most accurate, you use the loaded radius of the tire, then
mph = ( rpm * radius) / ( 168 * ratio)

 

[whiskey357]

My so many suggests on how to do it with so many different types of combinatuions......I guess the first question is A. how deep are your pockets...B. ask a truck dealer on heavy commercial trucks ..(they love to talk bundles)...C. Just how bad do you want this?????......and D. Really ask the commercial truck guys as they will take your call at cummins and other places....they love a change of pace.....best of luck.........

 

[Nasty610]

The 939 series have a axle ratio of 6.44 to 1 , not far off from the 6.72 to 1 in a deuce.

939s have an overdrive transfercase that's why those trucks can reach speeds in the 60s with a 1:1 5th gear in the Alison.

 

[Goomer214]

Ryan123, what are the laws like there in Colorado about swapping in engines ? Do they require you to meet EPA standards ? Here in Washington we are required to meet EPA standards. Since the 2 stroke Detroits do not meet EPA standards you would not get it licensed here. I hope Colorado is different.

Im pretty sure your military truck would not fall under any EPA requirements

 

[Ryan123]

Well in Colorado you can put in an engine the same year or newer and as far as the idiot at the counter knows it's stock still your truck doesn't get inspected so all is good