Forum Discussion
4x4ord
Aug 22, 2020Explorer III
How heavy is the heavy RV you're talking about? If you're talking about a 34000 lb RV then yes a F450 with 4.30 gears is the truck for you. If you've got a 20,000 - 25000 lb RV the F350 with 3.55 gears is going to be a much better choice. The F450 with the 10 speed transmission runs out of cruising gears at 50-60 mph. The 2020 Powerstroke makes 320 hp at 1600 rpm and it only takes about 140 hp to pull a large rv down the highway at 70 mph. The F450 would be in 10th gear at 2000 rpm doing 70 mph.
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