3.55 is the standard for the ecodiesel. So I bet it will be 3.55. That is a real good ratio my 91 cummins had that ratio and it did anything I wanted to do, from tooling around town to 15 k on the hay trailer . That particular year at less hp and torque than the Eco.
which Axle Ratio for EcoDiesel
What axle ratios do you folks have on your trucks? I was dealing with two dealerships in trying to place a 2014 Longhorn order this past week. Both said that the default axle ratio is 3.21 on their order page. I told them that ratio is for the V6 gas and the diesel is 3.55 with option of 3.92. They both said can't do anything about it. I placed an order with one of them. What do you think I will be getting? What is the true default axle ratio?
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3.55 is the standard. there are plenty of threads on this forum discussing the merits of the 3.55 and 3.92.... the 3.21 is not available for the ED. nice to read yet another post about dealers knowing less than we do about their product.
I think on my sticker it says 3.21 at first, then after the ED option it changed it to 3.55, so 3.55 should be standard unless it is specifically ordered with the 3.92
3.55 works good for my towing application.
These guys have it right. 3.21 is the std. axle ratio for Rams, but when you chose options, such as ‘upgrading’ the engine you get 3.55 as std.
I’m still debating myself, at first I wanted 3.92s, but and now leaning towards 3.55s. I plan on running 17” LT-34”s with a mild leveling type lift (1” in back, ~2+” in front),however don't want to wreck my fuel mileage too much. (The stock 20’s are ~33.6”)
I feel like If I were lifting ~4”+ or going with ~35”+ tires I’d want the 3.92s. Sometimes I tow light, and haul some mild loads, but who knows what the future will bring. With these Rams even a mild load is a ‘heavy load’, as they don’t have much payload capacity, lol. I don’t want it to be downshifting all the time for hills, but don’t want too high of RPMs when running highway speeds on level ground. I wish I could rent one of these things for a weekend!!
I’m still debating myself, at first I wanted 3.92s, but and now leaning towards 3.55s. I plan on running 17” LT-34”s with a mild leveling type lift (1” in back, ~2+” in front),however don't want to wreck my fuel mileage too much. (The stock 20’s are ~33.6”)
I feel like If I were lifting ~4”+ or going with ~35”+ tires I’d want the 3.92s. Sometimes I tow light, and haul some mild loads, but who knows what the future will bring. With these Rams even a mild load is a ‘heavy load’, as they don’t have much payload capacity, lol. I don’t want it to be downshifting all the time for hills, but don’t want too high of RPMs when running highway speeds on level ground. I wish I could rent one of these things for a weekend!!
Thank you all! I agree it is frustrating when I know more than the sales guy. I kept on correcting this seasoned sales guy. Like study your stuff when things are slow. In their defense there are a lot of vehicles out there.
@twoforty - the light payload has nothing to do with the transmission or engine... there are light trucks out there that have way smaller V6's and shitty transmissions that have an almost equal tow rating and higher payload (or at least equivalent) - namely the tacoma V6 (6400lb tow rating with its tow package) and that is in a 5 speed gas V6 that is only pushing 270 Ft/lb... so wouldn't be too concerned about all the shifting and unable to hold gear.
my '13 4Runner SR5 (again a 5 speed V6) that i traded in for the ED had the virtual same payload capacity as my ED and 5K tow rating - and it didn't have any tow package and had a Class III hitch.
i really do believe the light payload is more a reflection of the suspension than it is anything else, and by all means if someone has better data to correct me please feel free to do so.
my '13 4Runner SR5 (again a 5 speed V6) that i traded in for the ED had the virtual same payload capacity as my ED and 5K tow rating - and it didn't have any tow package and had a Class III hitch.
i really do believe the light payload is more a reflection of the suspension than it is anything else, and by all means if someone has better data to correct me please feel free to do so.
@twoforty - the light payload has nothing to do with the transmission or engine... there are light trucks out there that have way smaller V6's and shitty transmissions that have an almost equal tow rating and higher payload (or at least equivalent) - namely the tacoma V6 (6400lb tow rating with its tow package) and that is in a 5 speed gas V6 that is only pushing 270 Ft/lb... so wouldn't be too concerned about all the shifting and unable to hold gear.
my '13 4Runner SR5 (again a 5 speed V6) that i traded in for the ED had the virtual same payload capacity as my ED and 5K tow rating - and it didn't have any tow package and had a Class III hitch.
i really do believe the light payload is more a reflection of the suspension than it is anything else, and by all means if someone has better data to correct me please feel free to do so.
Right on jeff, there is alot of other factors that come into play other than gear ratios. Suspension plays a factor, transmission gear ratios, but more importantly is braking capability and tow vehicle weight. I guarantee you can put a 5th wheel plate in the back of these trucks and take off with just about anything, but weither or not you can stop with that load without your trailer pushing you around is a whole nother story.
Jeff, yeah, I know the payload rating has nothing to do with gear ratio, I was just taking a stab at Ram for their weak rating compared to the competition….Maybe they’ll read comments like that and up the capacity appropriately
I'm putting air bags and LT tires on mine, I don't like a truck to squat with a load in the back, even the max rated load would squat too much for me.
I'm putting air bags and LT tires on mine, I don't like a truck to squat with a load in the back, even the max rated load would squat too much for me.
I tow a 7,000 pound travel trailer so we went with the 3.92 rear end.
Aside from towing, how about differences in mpg and 0-60?
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