Sterling 10.5"
So, if you were switching gears from a 3.73 in an Excursion with the V-10, would you go right to 4.56 or 4.30? Gas mileage is not a concern, and it's in a 2WD.
Forum Discussion
I have a 02 Excursion V10 2wd with stock size tires. I made the jump from 3.73 to 4.56 about 6 months ago. I tow a 10,000# loaded 37' travel trailer. It made a tremendous difference in towing. It still wanted to downshift out of OD more than I liked after the gears so I also added a tuner/Y-Pipe/intake combo from 5 star tuning. I tow at 70mph in OD no problem. Mileage didn't improve from what I was getting with just locking OD out. I only lost about .5 mpg running without the TT, 8 mpg towing and 11.7 mpg empty. Acceleration both with and without the TT is night and day difference to say the least.
