Forum Discussion
Snomas
Sep 23, 2014Explorer
We pull 5000# toad and loaded MH thru the rockies all the time. Our 350 ISC cummins will hold 55 if we keep up RPM's and don't lose speed from behind a semi on 6% grades. If we have to slow down it will still climb @ 45MPH using manual shifting to keep up RPM's!!
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