The 6 speed and 8 speed have the same 0.67:1 top gear ratioI did a bunch of research on this before I bought my 2014 and it boils down to your gear ratio. the 6 spd had a higer (numerically lower) first gear ratio and overdrive ratio than the 8spd. that transmission should be paired with the 3.92 gear. the 8spd seems to be targetted to the 3.92 ratio. I got an outdoorsman package truck which comes with the 3.92 and limited slip dif. when I'm on the highway above 70 she sings pretty high and when I'm at a stop light pulling my 5k lb boat it's got more snot than my old f150 did unloaded! at this point I can confidently say there is no real reason to have the 3.92 gear with the 8spd.
I agree. The 3.21 tows my trailer easily and confidently. I would like to see TFL do an Ike test with a 7500# trailer with the 3.92 and 3.21 Ram. I would like to see the numbers and hear the critiques, not because I expect the 3.21 to be better, but I am curious how much difference there would be in shifting, fuel consumption, descending, and driveability.If your trailer is 8000lbs or less, you will be wasting thousands of dollars to swap to 3.92s
You need a 2500 for that trailer more than you need a 1500 with 3.92sLots of of stress.
Love to get peoples knowledgeable opinions.
Was right in the middle of purchasing a 2016 Dodge Ram 1500 4x4. Crew cab 6’4 bed. Truck has a factory installed 4inch lift and off-road tires.
I need to immediately haul a 8.5 x 20ft car hauler trailer loaded heavy guessing around 12,500+ lbs. I need to haul this about 3300 miles.
Has the tow package. But only has the 3.21 rear end, truck also has 58k miles on it . The people at dodge does not suggest it. My dad say I will destroy the truck. I cancelled the deal but still sitting in parking lot undecided. Please help!
Where did you get an LSD done for 800 bucks ? When I asked my dealership about a swap, they quoted me over $2K.It was going to be $2200 for my 4x4 to be changed over from 3.21 to 3.92 gears but that was also with an LSD put in at the same time. I opted for just the LSD swap for $790.
Find a local shop. If you need a starting point look for an off-road or a hot rod shop and if they can't do it they should be able to tell you who can. I paid around that for labor on a LSD swap on my 2014 when I had it.Where did you get an LSD done for 800 bucks ? When I asked my dealership about a swap, they quoted me over $2K.