Not sure what you mean by the rpm comment. I have a 2012 supercab 4x4 with 3:73 gears and tow a fifth wheel camper weighing around 10,000# loaded. The truck is rated to tow 11,300#. Towing at 60 mph in the Cascade mountain range the highest rpm I've seen is around 3000 on the steepest grades (like the Santiam Pass when the truck shifted down into third) and I could have easily pick up speed. Torque curve charts show 90% of peak torque at 1,700 rpm.
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Today's Featured Article - The Nuts and Bolts of Fasteners - Part 2 - by Curtis Von Fange. In our previous article we discussed capscrews, bolts, and nuts along with their relative hardness and thread sizes. In this segment we will finish up on our fasteners and then work with ways to keep them from loosening up in the field. Capscrews, bolts and nuts are not the only means of holding two parts together. When dealing with thinner metals like sheet tin, a long bolt and
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