3.21 or 3.92

[cgeorgemo]

Maybe in the rain..the 3.21 on the exact same patch of freshly paved road would only chirp the tire. I didn't hold the break, the road was dry as a bone. The test drives were one after the other so the pavement wasn't any hotter. I simply took traction control off and put the petal to the floor. If the 3.21 couldn't break loose than I know in the same situation the penstar deffinitly couldn't.

My test is fact, not someone blowing smoke. I wanted to see the difference between the 2 from a take off and I did. I wouldn't bias one over the other in the test because if the 3.21 had surprised me and had similar take off I'd have got it.

That is a good point about the surface being different. It was a parking lot and I power braked for a bit. Also if you were driving Longhorns they weigh more than my Tradesman does.
But the point I was trying to make was about the mechanical advantage of the lower ratios in the 8 speed.

I love the 3.92s in my truck. I could probably get a couple more mpgs with a lower ratio, but it still sits at like 2k rpm at 80mph. I get around 19mpg commuting to work so it's nice.

I don't go 80 except to pass but at 75 it is turning at 1,750 with 3.21s.

 

[xrsman]

I drove both also and I didn't turn the traction control off on either. And there want that much difference. Go do your 1/4 Mike and 0 to 60 times and see.If we want to get into towing yours is treated more to you're but you still have the same truck, no better brakes suspension or frame. Your opinion and mine are not the same. The other guy on here there was a post about going to 3.21 from a 3.92. Oh **** I just realized where your at you guys don't do 1/4 miles. LOL

Surprisingly enough even up here they're called 1/4 miles times. Must be so that everyone has an equal comparison that everyone understands

 

[pld]

I'm from Ontario so please leave me the **** out of this one.

 

[Dubstep Shep]

I thought all the 8 speeds came with the 7" screen cluster?

 

[cgeorgemo]

I thought all the 8 speeds came with the 7" screen cluster?

Nope you can get the 8 speed in a Tradesman if you get the base Pentastar or if you option it from the factory that way.
I bought base model and upgraded mine to the 7".

 

[Andy578]

for me it's 3.92 all the way especially for towing. even if you just move light loads you're gonna benefit. my other truck is a 2011 silverado and while it's a completely different truck it has 3.23 and i absolutely hate it. even with light weight(under 3000lbs) it pulls like crap

 

[woody31]

I have 3.55 gears in my police package truck,,plenty of pep,,

 

[HD4]

you will be great with 3.21. I just this past week purchased a 14' Sport CC 4x4 with 8speed and 3.21. I test drove a Laramie that had the 3.92 at same dealer. the Larmine had like 16,000 miles on it the Sport I now have had 1,700 on it. I felt no REAL difference. Plus I dont typically like to "spin the tires" when I tow my 28 foot boat.

 

[clh1220]

for me it's 3.92 all the way especially for towing. even if you just move light loads you're gonna benefit. my other truck is a 2011 silverado and while it's a completely different truck it has 3.23 and i absolutely hate it. even with light weight(under 3000lbs) it pulls like crap

There is no comparison from your ram to your silverado. I had a z71 and 3.73 and my hemi with 8 speed and 3.21 runs all over it.

 

[BluByU14]

This feedback is coming from a guy who had a 2014 GMC Sierra with the 6.2L and 3.73 rear. Before purchasing my 2015 Ram 1500 Sport with a 3.21 rear, I did test a similarly equipped Ram with a 3.92. The 3.92 felt a little more peppy off the line, but to me the difference was very marginal. Went with the 3.21 as that truck had more of the options and color that I wanted in the long run. I hauled a relatively light load this weekend (about 1300lbs of payload) and the truck did just fine...didnt even know it was back there. If you are ordering a Ram, go with the 3.92, but if you are looking for a truck that is already at a dealer and cant find an exact much of what you want......go with the 3.21's. The hemi/8-speed w/3.21 performs much better than my Sierra ever did. If your not haul/towing stuff on a daily basis or pushing your loads over 5,000-6000lbs, you'll be fine with the 3.21 rear.

 

[DiabeticKripple]

3.92's will give you more torque to the ground, 3.21's will give you better mpg's and top end.

 

[bryan28]

I found a 2014 sport that i liked but it didn't have a spray-in liner or lsd and $750 kept us from making the deal. It had 3.21 and 8 speed and felt pretty nice when i drove it. It looks like to get all the options i want in a Sport i will have to order one. It won't be for another couple months but from all the feedback i think i may go ahead and order it with 3.92. Thanks for your replies. If it were up to me I'd split the difference and get 3.55 but it's not an option.

 

[DiabeticKripple]

the spray on liner can be done at the dealership.

i was just looking in their lot with the salesman when a new shipment of trucks came in.

there was a 6' 4" box sport, with 3.92's and LSD. fully loaded minus rear defrost. so i got the spray liner put in, mud flaps, and undercoat.

 

[bryan28]

I went to the dealer to see about ordering a truck and we struck a deal on a 2014 that I'd been looking at before. It has the 3.21 gears but it feels like it will suit my needs just fine. There are two options i wish it had (lsd and spray on liner) but other than that it's pretty well loaded. I will for sure get a spray in and if i find a need for the lsd i can have it installed later. I appreciate your responses to my initial inquiry.

 

[clh1220]

I'm assuming it's 4 wd, I have the same setup and mine did fine in the snow. I ran it auto when that was snow on the ground. My truck had everything I wanted except the lsd. I figured if I need it I'd have the auburn unit installed. not the factory unit. I have a 13 durango citadel awd and it did great in the snow the previous year

 

[bryan28]

Yeah it's a 4x4. And i agree that if i ever find the need for lsd i can have it installed later. I have put a couple hundred miles on it now and it has plenty of power and pull for my needs.

 

[bart98stang]

I have a '14 Big Horn 4x4 CC 8speed w/3.21 limited slip and I have a 28' travel trailer and 21' boat and it tows it just fine even up hill. I don't like to beat the **** out of my truck so I don't care if the 3.92 spins the tires easier. I don't want the abnormal wear and tear on the drive train plus the extra cost of using more gas by always flooring it and premature wear on tires.

So if you are like me and don't want to beat your truck to death and only tow the small boat and don't care whether your truck spins the tires 25 ft or chirps than the 3.21's will work just fine. Just because it's a taller gear doesn't mean the truck wont do what you tell it to do.

If you plan on beating your $45G truck to death by always getting on it and have the extra cash for gas burning a hole in your pocket then the 3.92 will be up your ally.

 

[clh1220]

I have a '14 Big Horn 4x4 CC 8speed w/3.21 limited slip and I have a 28' travel trailer and 21' boat and it tows it just fine even up hill. I don't like to beat the **** out of my truck so I don't care if the 3.92 spins the tires easier. I don't want the abnormal wear and tear on the drive train plus the extra cost of using more gas by always flooring it and premature wear on tires.

So if you are like me and don't want to beat your truck to death and only tow the small boat and don't care whether your truck spins the tires 25 ft or chirps than the 3.21's will work just fine. Just because it's a taller gear doesn't mean the truck wont do what you tell it to do.

If you plan on beating your $45G truck to death by always getting on it and have the extra cash for gas burning a hole in your pocket then the 3.92 will be up your ally.

That's pretty much right.I didn't get my truck to be a race truck. When the 3.92 it's smoking the tires mine will be on down the road since it's not burning the tires off it.

 

[05christj]

I would say go with 3.92's, I have 3.55 and I don't think they are even enough gear....... Granted my truck is a 4.7 it's always going to be a slug.

 

[clh1220]

I would say go with 3.92's, I have 3.55 and I don't think they are even enough gear....... Granted my truck is a 4.7 it's always going to be a slug.

Your truck is not even close to being in the same league as a hemi with the 8 speed and 3.21. You should go drive both with the 8 speed then you would know what the 3.21 guys are saying.