Gear swap ?????

pressurepro · Jan 19, 2015

2012 Ram Hemi 2wd..
Getting ready to do a gear swap tommorow...3.55ls to 4.10ls using the mopar oem gears....do I need to do anything with the computer/speedometer?? Recalibrate anything??or just drive it and it figures everything out itself?....any help or advice greatly appreciated..thanks.

DavidRam · Jan 19, 2015

pressurepro said:
2012 Ram Hemi 2wd..
Getting ready to do a gear swap tommorow...3.55ls to 4.10ls using the mopar oem gears....do I need to do anything with the computer/speedometer?? Recalibrate anything??or just drive it and it figures everything out itself?....any help or advice greatly appreciated..thanks.

No, nothing needs to be done with comp or speedo. Let them break in for 500 miles, do not go on long drives during that break in period. I did the same swap, good luck!

This thread has some good info, too. http://www.ramforum.com/f44/finally_getting_4_10s_lsd_installed-46673/

RLJ10X · Jan 19, 2015

^what David said. The speedo sensors are at the wheels, not the tranny, so it's all good.

I'd like to hear your impressions of the 4.10s. I think you'll really like them.

pressurepro · Jan 20, 2015

Just went on the lift...cant wait...

sicmadek · Jan 20, 2015

All im gonna say is, i hope you have lsd.

pressurepro · Jan 20, 2015

Yep...3.55 lsd stock...

pressurepro · Jan 20, 2015

Least thats what window sticker says and its dam near impossible to drive in rain with traction control off and leaves 2 nice long black marks on concrete when powerbraked just right

Ecofx86 · Jan 20, 2015

How do you know if you have lsd?

2012 Ram Hemi

DavidRam · Jan 20, 2015

Ecofx86 said:
How do you know if you have lsd?

2012 Ram Hemi

If you do burn outs and it leaves two tire marks, you have lsd. If you leave one tire mark, you have an open diff.

PassivAggressor · Jan 20, 2015

I hope to install mine this weekend...

wsutard1 · Jan 20, 2015

SO??? Thoughts on the first drive?

pressurepro · Jan 22, 2015

Supposed to be done this afternoon...broke some kind of special tool...had to get a new one to finish it....grrrrrrrrrrr.....lol

wsutard1 · Jan 22, 2015

Damn. I am about 10% considering doing a gear swap. My truck has the 3.21 or whatever the lowest is. I don't tow and hardly think about it till I come on here and read about 4.10s and the smoke you can make with them.

pressurepro · Jan 26, 2015

Got the tool...was the long one that goes all the way into the axle tubes to adjust the side play .then proceeded to ruined the big fat shim that goes between the rear pinion bearing race and the main housing...so we wait till wed/thurs...truck is still up on lift all apart..

Ecofx86 · Jan 26, 2015

Damn

2012 Ram Hemi

pressurepro · Jan 26, 2015

All done...guy finished it yesterday...drove it around bout 20 miles....nice and quiet....no whining..no clunking...no nothing....much better feel and way peppier off the line...got rid of that lag/bog...the 1-2 shift is much more positive and iys finally a pleasure to drive..little more rpm on highway but nothin major or wierd feeling...im very happy...this is what it should have come with....oh..and it will now light up both tires from an idle on grippy asphalt through 2nd gear till it shifts.....just nail it...gone...

Statcher1 · Jan 26, 2015

Sounds good man. What was the cost of the upgrade?

Sent from the Rocket in my Pocket

sicmadek · Jan 26, 2015

If it whines you wont hear it til about 500 miles

RLJ10X · Jan 26, 2015

Pressure, you're starting to sound like I do.

pressurepro · Jan 28, 2015

Even as stock trucks these things would be a total ball with 4.56.gears..just sayin'..

..plenty of OD for nice highway manners still...im at 2300 at 80 mph with the 4.10...26-2700 wouldnt be a problem....mds/eco stays on alot more a d alot longer now too...not struggling/lugging on hwy near as much....

Gear swap ?????

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