Changing from 3.73 to 4.10 gears
Hello all, After towing our new Reflection 320MKS from Eastern Iowa to Estes Park Colorado and back, I need more power for the hills. I have a 2015 F-250 with the 6.2 Liter engine. I have 3.73 years...
Forum Discussion
FWIW- I have had 3.42, 4.10 and 3.73 rear ends. (Chevrolet Suburbans and a 27 ft 7000 lb gross TT).
I have noticed very little difference in performance. We downshift to go up hills. Worse yet we rarely get into high gear EVER (even on downgrades). Engine RPM's differ by only a few hundred RPM between rear ends.
I understand the fiziks and the idea with different rear ends- it does not affect horsepower much at all, but it does affect "the amount of pull" available- and maybe...MAYBE could get you to some sort of magical "sweet spot"...but doubtful.
If you are really maxed out- maybe you should have the lower gear rear end. Conversely, I usually wish I had a higher one (due to the car 'feeling' it has to be in fourth gear so much...if you are going to be stuck in 4th, use a higher rear end to cut the engine RPM a tad- and then get better mileage empty.
I agree that newer transmissions tend to make the rear-end choice a lot more trivial (not totally worthless, just somewhat trivial).
Based on my experience, I agree that the $ to swap out may not be worth it.
I have noticed very little difference in performance. We downshift to go up hills. Worse yet we rarely get into high gear EVER (even on downgrades). Engine RPM's differ by only a few hundred RPM between rear ends.
I understand the fiziks and the idea with different rear ends- it does not affect horsepower much at all, but it does affect "the amount of pull" available- and maybe...MAYBE could get you to some sort of magical "sweet spot"...but doubtful.
If you are really maxed out- maybe you should have the lower gear rear end. Conversely, I usually wish I had a higher one (due to the car 'feeling' it has to be in fourth gear so much...if you are going to be stuck in 4th, use a higher rear end to cut the engine RPM a tad- and then get better mileage empty.
I agree that newer transmissions tend to make the rear-end choice a lot more trivial (not totally worthless, just somewhat trivial).
Based on my experience, I agree that the $ to swap out may not be worth it.
