Best Allison for NTC 350/400 Big Cam

[nklpltd]

I'm looking for a little advice. I'm trying to work out plans for a future project. I plan on buying a M814 and doing a repower with either a 350/400 big cam cummins. I want to put an allison behind it. What allison would you guys recommend behind an engine like that?

 

[Castle Bravo]

I have nothing but good things to say about the Allison HD4070 that is behind the NTC400 in my M916. It is a very peppy truck for what it weighs. I think they're pretty pricey, though.

The Allison HT754 and HD4570 are found behind the NTC400 in military usage.

 

[supermechanic]

I have an Ht 750 I can sell for a rebuild. It is a useable core.
Get a quote for the rebuild first, these are expensive.