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Old 10-31-2012, 11:36 AM   #8
GCncsuHD
Charlie Daniels w/ a Tq Wrench
 
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Join Date: May 2009
Location: Statesville, NC
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Re: found this stamped on the ring in rear end

Yep, that would be 41 on the ring and 11 on the pinion, 3.73. The ring gear is usually stamped with this. For most stock or mildly modified trucks the 12 bolt is plenty strong, now if you are running 37" plus tires and offroading it hard, sure you will need to look for something stronger, but for normal driving, slight offroading and a little playing around it is fine. Better than the 10 bolts.

Quote:
Originally Posted by wilkin250r View Post
3.73 is a good ratio if you have 31 to 33 inch tires, but I can tell you from personal experience, it's lousy with 40 inch tires.
I can imagine, I had 5.13s with 38s and I wanted more
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