Originally Posted by swampjeep
from people I know who've used both from towing, the 454 uses about 2x the amount of fuel compared to the 6.5 diesel on the same trip, and the power in 100% stock form was not much different either.
I really can't imagine the 454 getting less than 7-8 mpg towing unless it was a 4.56 dually trying to run 70mph with a 12K gooseneck. A 460 will manage 8-10 across the midwest with just a car hauler.
No way a 6.5 is getting 14-16mpg towing
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Last edited by Bones; November 5th, 2013 at 08:23 AM.