Dodge Cummins Diesel Forum - View Single Post - 4.10 gears on 3500 SRW
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post #8 of (permalink) Old 09-10-2019, 11:34 PM
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Originally Posted by mxsledder View Post
I ordered them on my build and price for my 19 and was told at the last minute from my dealer no go. Only 3.73ís are available on a SRW at this time period. Iím running 35ís and the torque is so impressive Iím glad I wasnít able to get 4:10ís. If your getting 37ís and towing extremely heavy you just might want to do an aftermarket re gear but even then with all the torque the 3:73 should work well.
I have not searched extensively yet, but I'm finding nothing in the way of aftermarket gears or lockers for our 12" rear end. Certainly that will change soon but for right now, us SRW guys seem "stuck" with 3.73 clutch type LSD. I can say that I've put mine through the paces towing off road and the rear end does hook up both tires in the slop. Almost as well as my old 11.5 AAM G80 auto mechanical lockers on my old duramaxes. Also, I agree that with this much torque, 3.73 are more than adequate for running 35's heavy.

My 1st Ram: 2019 Laramie 3500
6.7 HO Aisin AS69RC. Borg Wagner 44-48 4x4. 12" AAM Rear end. CCLB. Single Rear Wheel. Max Steel. 295/70/18 (35x12) Mickey Thompson MTZ P3. No lift/no level.
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