Did the AD 1-tons even have the capability to reach 55?
We aren't talking about an AD 1 ton, we are talking about a ND 3/4ton. That 270 can be wound to 3200rpm all day.
3200 rpm with a 5.14 gears (1 ton rear) and 31"tires will give you 57.4 mph.
3200 rpm with 4.56 gears (3/4 ton rear) and 31" tires gets you 64.7 mph
Ok, lets add a NV4500 with a 27% OD in the mix...
3200 rpm will push the 1 ton up to 78.7 mph, and the 3/4 ton to 88.7 mph.
The numbers above are hypothetical. I wouldn't expect a 216 to be able topull these tyhpes of rpm, Nor would I expect a 228 for this duty. A gmc 248, 270, or 302 should have no problems.
