2013 RAM 1500 321 > 392 Upgrade

RLJ10X · Jan 22, 2017

Nate, go with 4.10s. Thats what l have and l love them. You will wonder why 4.10s weren't stsndard. My normal routine is to start the truck and punch both trac control, and tow/haul.

Now, this next part is not typical, but l can do it occationally. I reset the lie-o-meter at my friend's house. If l happen to get really good gas, and l really try, l can get the dash to read 23 mpg, for the 40 mile trip home. That's driving 55, or less most of the time.

^I hate driving like that for long, tho. It's nice to know the potential is there.

And do the lsd, while you're at it.

Fergeson · Jan 22, 2017

Get another route to install the bils, unless that includes parts. I paid 330 for the front adj struts and rear shocks, went to an off road shop they installed all four corners for 140 and then the alignment

nforkram · Jan 24, 2017

I hear you on the Bilsteins. I have a good shop that I normally use. But figured since all apart for the front diff anyway, surprised they agreed to do it, they might change their mind once I say, hey set them at 2.1!

They say 2-3 days, I expect 5, and, didn't want to have drop off again and have another wait for the Bilsteins.

Confirmed the costs, have a Friday appointment to drop off, we'll see how the write up goes, LSD Install?

I got a 5 page e-mail backing everything up, so should be good.

Trexterra · Jan 24, 2017

So yeah... Just as promised 4wheelparts told me today that they don't have the right parts. That's the bad news. The good news is that the dealer is getting charged for the price difference. Unknown right now what final cost is but it's not going to be the original 2k quote lmao.

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nateinva · Jan 24, 2017

RLJ10X said:
Nate, go with 4.10s. Thats what l have and l love them. You will wonder why 4.10s weren't stsndard. My normal routine is to start the truck and punch both trac control, and tow/haul.

Now, this next part is not typical, but l can do it occationally. I reset the lie-o-meter at my friend's house. If l happen to get really good gas, and l really try, l can get the dash to read 23 mpg, for the 40 mile trip home. That's driving 55, or less most of the time.

^I hate driving like that for long, tho. It's nice to know the potential is there.

And do the lsd, while you're at it.

Thanks for the reply....I somehow missed it the other day. My cousin could do the work if I secure the parts so it's just the issue of trust. lol

smiley · Jan 25, 2017

Tuned in. Gear swap and lifetime warranty is what I wish I had! The 9.25 can be a pain if that damn nut comes loose.

RLJ10X · Jan 25, 2017

If l was going with 35" tires, l'd have given serious consideration to 4.56s. 4.10s on 33/32" is about right.

Trexterra · Jan 25, 2017

Yep, 4wheelparts was wrong and the forums were right. They had to get a new front diff from the Dodge dealer. Luckily for me they are making the dealership I bought it from pay for the $1200 difference lmao.

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Trexterra · Jan 28, 2017

Got the truck back and been breaking in the gears for a few days. So far so good

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nforkram · Jan 29, 2017

Dropped mine off on Friday, verified the costs, looking forward to getting it back, 3.92s, LSD, Bilsteins (2.1), and Mag-Hytec Cover.

nforkram · Feb 10, 2017

All done, truck runs great, truck feels a lot better.

Trying to get my sales codes updated now.

Blisteins at 2.1 seem about right, just a little rake.

The Mag-Tec diff cover looks awesome.

huntergreen · Feb 10, 2017

3:21 changed out for 3:92 is a night and day difference.

Trexterra · Feb 11, 2017

Going to drain the diffs tomorrow. Got about 800 miles on the new gears and they recommended 500 =/. Should be fine though.

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bang0062 · Feb 16, 2017

nforkram I see you did the swap, I know Moe's has the right rear components but I am looking for the correct front assembly part from Mopar One and they have been no help. Can you tell me what you ordered from them to accomplish the swap? Thanks!

nforkram said:
Got all of the parts, front, rear, LSD, mostly from Moe's and MOPAR One, all OEM, for a 3.92 / LSD Upgrade.

When I bought the truck, I got the lifetime care, after driving, decided I wanted to upgrade the gear ratio, and add the LSD. I can cancel the warranty within 60 days, have local driveline shop do the the install, and get all of my warranty money back.

Or, Chrysler Warranties Direct, said, if I had a RAM dealer do the install, then I would not void the warranty. Anybody ever had a dealer to this? Not sure if they can.

I know it is going to cost more, but with all of the electronics and all, would like to keep the warranty if I can.

nforkram · Feb 16, 2017

That is the right part number and I did confirm with Mike at Moparone before I purchased. Couldn't be happier with the outcome, so far!

2013 RAM 1500 321 > 392 Upgrade

RLJ10X

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Fergeson

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nforkram

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Trexterra

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nateinva

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smiley

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RLJ10X

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Trexterra

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Trexterra

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nforkram

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nforkram

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huntergreen

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Trexterra

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bang0062

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nforkram

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