Rear end

[derrik.kasinger]

I just got a used rear end. It is 14 bolt on diff cover and cover is painted green if that helps any. Its 6 lug axles. The lettering on the axle tube is KHB G1991. The lettering on the gears are 2 gm 14012787 12 41 7 87. I believe this is a Dana 44 rear end but not sure of gear ratio. Any and all help will be appreciated.

 

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[silveradosid]

take the rear cover off and mark the crown gear, then turn the input yoke and count the number of turns it takes to turn the crown gear 1 complete revolution. if it is 3.73 ratio then it will take 3 and 3/4's of turns on the yoke

[SierraHD17]

41 12 is the number of teeth on the crown (41) and the number on the pinion being 12.  Divide those together and it's your gear ratio which is 3.42.  Dana 44s have 10 bolts in the cover and not 14.  Being a 14 bolt cover and 6 lug axles with 3.42s it's a 9.5" gm 14 bolt.  Super common rear end.