Choice of rear axle on 2016 F350
Hi everyone. We're ordering a new F350 (4x4 CC LB Diesel) and are trying to decide between the 3.73 and 4.30 rear axles. Presumably the 3.73 will have significantly better MPG, both empty and towing, ...
Forum Discussion
I think it will do fine with 3.73, but you will find the transmission shifts down to fifth more often on hills and in headwind. Since my truck is not driven unloaded often and not a daily driver, the higher ratio works for me. I live in an area that has 3000' climbs within 50 miles, so that is also a factor compared to someone that primarily travels the flats. I also like initial low gearing when starting on an incline - I never feel the transmission is struggling to get the load rolling or overworking the torque converter. Although I try to avoid city traffic, I am geographically bottlenecked and typically have to drive through congestion to get away from it. I never gave much thought to advantage of lower gearing through these areas, but I'm sure it helps too.
If all of your truck usage is towing and hauling, you will not be disappointed with the 4.30 ratio.
If all of your truck usage is towing and hauling, you will not be disappointed with the 4.30 ratio.
