What do these motors have for factor hp? I know you can get the same if not more than a big rig. The semi is built more heavy duty. My semi has 460 hp. Last one had 470. Some as big as 600 hp. I know you can get more out of these with the right parts. :burnout BTW, '02 Freightliner + 460 Cummins + 10 speed Eaton tranny + 336 rears = 120 mph! :burnout It's faster than my 6.0! Not that I'd ever take 80,000 lbs up to those speeds
.