[Dave W]

I'm towing our 12+K High Country with a Ford 6.7 and 3.55 gears. It does just fine though feel I should have opted for 3.73s as much of our hauling is in the mountains of NY and New England where starting at a traffic light on a steep grade coud be easier. The last truck, though a gas V10. had 4.10s actually did a wee bit better job at those lights but then fell to its 5 transmission gear ranges and high RPMs for hilly roads.