Difference between 4.30 & 3.55 gears
My 2011 F-350 has a 3.55 geared rear end. The new 2017 F-450 only comes with a 4.30 geared rear end. Basically the same engine (6.7 turbo diesel). Does that mean better or worse fuel consumption...
Forum Discussion
The biggest difference between the 350 and 450 is tire circumference. The 450 will have larger diameter tires compared to he 350. Some V-10 powered class A's have 4.88's!
