Discussion Starter · #1 ·
I have a 1997 F-350 ps, DRW, 5-speed, and what I believe to be a 4:10 gear ratio. I tow from 10,000 to 12,000 pounds frequently and really like the low end gears I have. However, upon reaching highway speeds, my tach is showing approx. 2400 rpm. I can also watch my fuel gauge moving to the left. I have considered changing my gear ratio to 3.73 to help with the fuel usage but I'm worried about my ability to get moving in 1st gear. Any ideas on how a change to 3.73 gears would effect my low gears?