Ford super duty 3.31 rear end. Will it be a big mistake. ?
Pulling a 37 foot Cedar creek with a f350. Diesel. Would the 3.31 rear end work or should I get the 3.55?
Forum Discussion
My bad on 20" tires requiring 3.55. Looks like the last year for that was 2019. I still wouldn't choose it for pulling a DRV. Not that it matters here, but the 6R140 does not have a 1:1 ratio. 4th is 1:1.15. I believe the Allison 1000 does have a 1:1 ratio.
