My buddy upgraded the gears in his 05 Ram and gave me the stock 3.92's with 3200 miles on them. Right now my truck has the stock 3.55's. I am running the stock 265/75 tires with plans to get a set of 275/60 20's very soon.

This truck is used for street driving with very occasional towing. I have added a 52mm throttle body, Harland Sharp 1.7's, free flowing exhaust. What I am looking to improve on is the low end, or lack there of. My intention is not to burn rubber off the line, but I do want it to get up and go.

With all that in mind I wanted to go up to 4.10's. However, looking at this free set of 3.92's I can have makes ittempting. Labor is not an issue as I will be doingyet anothergear swap myself. So I figured $200 or so for the front and rear install kits plus misc items and its a done deal.

What I am trying to find out is will I notice an improvement going to 3.92's? I saw many threads where people loved the improvement of going from 3.55's to 4.10's. All I was able to find was people saying not to install the 3.92's and go right to the 4.10's. I did not find much feedback regarding a 3.55 to 3.92 swap.

I am entertaining anyone's feedback regarding going from 3.55's to 3.92's...

 

i dont know much about the 3.55s but i have 3.92 in my truck. seems to tow well, (barely noticed the 3/4ton i was hauling)., lots of cruise speed acceleration.


and since they're free.. why not?

 

hell yeah, go for it, I've got 3.55s and I wish I had 3.92s or 4.10. As it is now I've got 265/75 tires and I want to go bigger but I feel like my gearing is too tall as it is now. When I have $500 laying around (like that ever happens) I'm going to swap mine.

 

I would definitely go for it, I mean you said you don't really tow and you've got 265's with plans for 275's, 3.92's might be just right for ya. I've got 285's now and its horrible, wish I could get a free pair of 3.92's :P

 

Im getting 4.10's next month in my Dodge Dakota 93 model with 318 underhood. Smoke'em if you got'em

 

I don't think the gears that came in the '05 will work in your '97. I thought the 9.25 they are using in the new models is different. I don't know for certains, but if I was you, I would check that first before you do anything. I know that Summit and Randy's list different part numbers for the second gen and third gen Rams.

 

Hmmm... I will have to look into this. I know the rear diff works in the 2nd and 3rd gen as I have a 3rd gen in mine. When I get a chance I will call the dealer.

 

I don't know if they would work but if thats all you think you need I say go for it. Should be better than what you have now although if I was going to spend all that in labor I'd go ahead and throw a set of 4.10's in there.

 

If they'd fit, I'd do it. Big difference between 3:92s and 3:55s. Suprisingly, theres only about a 120 rpm difference between 3:92s and 4:10s at cruise. I don't believe you'd notice a power issue.

 

Labor is a non issue as I will be doing it all myself. I've got to find out if the gears will work on a 2nd gen though. I see no reason why the rears wouldnt. The front is what I am questioning now.