starting to look at trucks
I'm in no hurry, but looking at used (2016 and up) F150's, looking at eng. size and wondering what would be best a 3.5 Ecoboost or a 5.0 L V8 . to pull a 7000lb trailer (TT) I think I"m leaning t...
Forum Discussion
Terryallan wrote:
Kind of proved my point. The lower rear gear gets you to the needed RPM for max torque.
As for the other statement about the 10 speed. Ford's engineers determined the tow capacity is always higher with the lower geared rear. No matter how many gears it has. A truck will NEVER be rated for max tow, with a 3.15 rear gear. It's in the book, and is no more than physics.
If it's rated to tow north of 7k lb, the Ford Engineers have determined, it's fine.
This is different from the old days of 3 speed transmissions where there often wasn't a good gear to match engine output, so you really needed the deep rear end if you wanted to tow much of anything otherwise you lived in 1st gear with the engine near redline if you wanted to go more than 35mph. The 10speed allows the truck to pick a gear that matches the engine output, so unless you are pushing over the tow limits, the rear end isn't a big deal.
