Best ring & pinion set? - Page 2 - Dodge Cummins Diesel Forum
2013-2018 General Discussion General Chit Chat About the 2013 model year differences 6.7L 4th generation Cummins - NO ADVERTISING - Sponsored by: StarLite Diesel

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post #13 of 36 (permalink) Old 06-19-2019, 09:35 PM
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4.10 with 35s is fine with an auto. My stock 32" tire 18 Aisin 4.10 dually turns same rpm at 70mph as my 34" tire 06 G56 3.73. RPM goes up slower above 70 with the auto because of the steeper OD ratio. To meet 35s would be perfect on the 18.

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post #14 of 36 (permalink) Old 06-20-2019, 02:52 AM
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Nitro gears makes a complete gear swap kit for our trucks
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post #15 of 36 (permalink) Old 06-20-2019, 11:10 AM Thread Starter
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Quote:
Originally Posted by Ltngdrvr View Post
Cheaper and easier to go back to stock size tires.
True.
I just priced Yukon sets for front and rear - $922. Labor at shop - $1200, so $2100 plus tax. New tires of the same quality I have now - $1200, so a little over a grand more to re-gear.
Worth it to me.
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post #16 of 36 (permalink) Old 06-22-2019, 10:56 PM
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Just did oem 4.10s on my 13 3500 that had 3.42s stock. Absolutely zero gear whine, and zero issues after towing fairly heavy (17k) with out a full 1000 mile easy break in. Got to around 6-700 miles before I towed with em. Now 7-800 additional miles while towing, no issues. I thought I read somewhere that the oem gears are heat treated, making an easy break in less critical.


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post #17 of 36 (permalink) Old 06-22-2019, 11:34 PM
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Quote:
Originally Posted by DieselMachine View Post
Just did oem 4.10s on my 13 3500 that had 3.42s stock. Absolutely zero gear whine, and zero issues after towing fairly heavy (17k) with out a full 1000 mile easy break in. Got to around 6-700 miles before I towed with em. Now 7-800 additional miles while towing, no issues. I thought I read somewhere that the oem gears are heat treated, making an easy break in less critical.


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All gear sets must be heat treated after the gears are cut...........that is the way it is done.
1. Cut gears to match ring and pinion.
2. Heat treat to harden.

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post #18 of 36 (permalink) Old 06-24-2019, 03:21 PM
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I regeared mine to 4.10 with 35's love the way it pulls. The shop recommended AAM gears. I asked about using Yukon as thats the gears they used in my Jeep. The mechanic said AAM would be much quieter than Yukon in the truck. Thats what I went with and 26,000 miles and no issues. Had truck regeared at 500 miles.
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post #19 of 36 (permalink) Old 06-24-2019, 05:37 PM
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I also re-geared for my 35's so that I could better pull a loaded hay trailer, and just generally go easier on the transmission. I went with Yukon 4.11's in my truck, and love the way it pulls. Just hauled a load of steel pipe, about 14k pounds, back for 3.5 hours and it was a night and day difference. Never did the truck feel like I had to put my foot down to climb a hill, and starting from a dead stop felt so much better on the transmission.

I don't think the change from 3.42's would justify the price of re-gearing. I can try to send you a video of how it shifts and goes through the gears with the 4.11's if you're curious, but personally, that's exactly how a cummins was designed to be run. Remember also that any big hills you go up, you will have to go down as well, and the exhaust brake is much more effective with the new gearing as well.

An additional point to be made, but with the Yukon gears, you will need a new carrier for the front that has a different deck height. I called Randy's to verify when I did my install as I wasn't sure if the shop was trying to pull a quick one, but they validated. You may want to check and see if AAM gears require the same thing, as if they do not, that will save you about $400 versus my Yukon install.

Let me know.

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post #20 of 36 (permalink) Old 06-26-2019, 02:00 PM
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My '17 with the Aisin and 20" factory wheels has 3.42 because it is SRW. I see now on the '19s you have a choice again. I pull a 39 foot 5'er @ about 16k pounds. I haven't noticed an issue yet, but I also haven't towed it anywhere but the plains so I haven't challenged the truck on any mountain grades (yet). Would a move to 4.11 be advised/beneficial to me?

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post #21 of 36 (permalink) Old 06-26-2019, 03:54 PM
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Quote:
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My '17 with the Aisin and 20" factory wheels has 3.42 because it is SRW. I see now on the '19s you have a choice again. I pull a 39 foot 5'er @ about 16k pounds. I haven't noticed an issue yet, but I also haven't towed it anywhere but the plains so I haven't challenged the truck on any mountain grades (yet). Would a move to 4.11 be advised/beneficial to me?
I think the Aisin has a lower ratio in the transmission. If you feel ok towing with your truck stock, I'm sure it's fine. Tons of guys here towing with stock gears. I'm on 35's so my issue is that I reduced my ratio even further by having slightly larger tires. Additionally, I had 37's and 4.56's on my 2010, which to me was the perfect ratio, as I used my truck for primarily towing.

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post #22 of 36 (permalink) Old 06-27-2019, 08:22 PM Thread Starter
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Originally Posted by Speciulboy View Post
I also re-geared for my 35's so that I could better pull a loaded hay trailer, and just generally go easier on the transmission. I went with Yukon 4.11's in my truck, and love the way it pulls. Just hauled a load of steel pipe, about 14k pounds, back for 3.5 hours and it was a night and day difference. Never did the truck feel like I had to put my foot down to climb a hill, and starting from a dead stop felt so much better on the transmission.

I don't think the change from 3.42's would justify the price of re-gearing. I can try to send you a video of how it shifts and goes through the gears with the 4.11's if you're curious, but personally, that's exactly how a cummins was designed to be run. Remember also that any big hills you go up, you will have to go down as well, and the exhaust brake is much more effective with the new gearing as well.

An additional point to be made, but with the Yukon gears, you will need a new carrier for the front that has a different deck height. I called Randy's to verify when I did my install as I wasn't sure if the shop was trying to pull a quick one, but they validated. You may want to check and see if AAM gears require the same thing, as if they do not, that will save you about $400 versus my Yukon install.



Let me know.
I just got off the phone with Randy's, and they assured me that the front set will not need a new carrier. But thanks for the heads up, I already have the gears, and am scheduled for install next week.

Interesting thing though. The rear set is made in the USA, the front set in China. Both have the same warranty.

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post #23 of 36 (permalink) Old 06-27-2019, 08:30 PM
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I just got off the phone with Randy's, and they assured me that the front set will not need a new carrier. But thanks for the heads up, I already have the gears, and am scheduled for install next week.

Interesting thing though. The rear set is made in the USA, the front set in China. Both have the same warranty.
Well hey, that's great news. Maybe there's a difference between 2017 and 2016 trucks. Either way, should save you a bit of cash. Remember to follow the break in procedure, it'll significantly impact the longevity of your new gears. I know it's a bit of a PITA, but makes a difference in how they break in. Remember to also not tow for more than 15 miles at a time after you get to 500 miles as well, for at least the first 45 miles or so. Give them a chance to cool in between runs, then you should be good to go. Enjoy the new found power and torque, you'll kick yourself for waiting this long to upgrade!

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post #24 of 36 (permalink) Old 06-27-2019, 08:35 PM
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I have an '18 3500 SRW with Aisin. currently running 285/75-18s (35's). I want to regear with 4.10s. Will this be too low of a gear with 35s and the Aisin? I think next tire will be a 37" though
thanks

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