Quote:
Originally Posted by BLK65K10
The 1/2 ton is stamped on the right front carrier flange. It will be two letters followed by 4 numbers. The letters designate the ratio and the numbers are the day and month made. If yours is original it should MA,MB,MC,MD,ME,MF,MG. which are all 3.90.
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Hey Lyle! I am so glad you wrote this - I’ve been needing to know how to tell if one has the rarer 3:38 gears vs standard 3:90’s. Can you tell me what the letters have to be for a 3:38? Or better yet, do you have a rear ended with 3:38’s in it?
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