M35A3 shifting characteristics

[Warren Lovell]

My question goes out to the M35A3 owners...

How does your trans shift?
Mine goes from a long first, then shifts to second and goes quickly to third and then 4th.

Is this normal?

If I go up a hill I manually downshift to third because the trans doesnt do it at the point i like.

 

[Z71]

What is the top speed of an M35A3?

 

[Westech]

Top speed is 52 ish... and how yours is shifting is how its set up to. That is normal. I run them like a 4 speed Manual when I drive them. The LMTV/FMTV shift the same way.

 

[flyxpl]

sounds about right . Mine takes a little longer than I like to get to fourth though .

 

[sierra117]

Sounds like yours runs the same way mine runs

 

[Warren Lovell]

Well thats great to hear...any concerns with manual shifting?

 

[sierra117]

Not sure about manual shifting have not done any with mine. Yet.

 

[lonegunman]

Sounds exactly like mine. I switched to ATF and it got a little smoother but it still shifts a bit hard. Two quirks, first it is right at 30mph between 3rd and 4th and in city traffic it wants to kick back and fourth. Second, it sems to downshift hard into first, everything else is fairly smooth. Allison guys thought it was about right for the model of trans.

 

[motomacguyver]

I just had mine rebuilt and dyno tested by an authorized allison dealer. Yours sounds like mine.

Going up, First and second smooth and fast, going to third it revs up for a second and drops into gear, same for fourth.
Coming back down fourth to third is smooth, then it drops into second and first pretty hard, and close together at slow speed.

 

[M35A2-AZ]

Mine takes a little longer than I like to get to fourth though.
I lift up on the throttle and it goes to 4th.

 

[R Racing]

Mine acts like the touqe converter takes about 3 to 6 seconds to lock up in 3rd if I remember right.All other shifts are pretty fast.

 

[wehring]

M939a2

This is not an A3 but similar. One of my M939A2 trucks with an Allison will not shift up until I let off of the accelerator. It does not take much but I do have to let up and get back into it for it to shift between 2/3 and 4/5.

It is a pain but it seems to be working fine otherwise.

Justin Wehring
979 997 3112