- 4,299
- 3,132
- 113
- Location
- Fort Worth, Texas
Pulled right from the TM. Also, as long as you're planning to do 55mph tops your solid. Toss on some 395s and get 62 mph cruising easy. Having had the 7155 in an M916 and the 5 speed Allison in the M915A1 I much more enjoy the Allison, I just wish it had an O/D.What rear end gear ratio does the m915a1 have ? Good for hauling ?