how to tell a dana 80 or? - Ford Powerstroke Diesel Forum
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Old 09-07-2010, 06:20 PM Rookie

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Question how to tell a dana 80 or?

I have a 99 f-350 4X4 SD-DWR i think i have a dana 80 Tag #F81A-AXG
Gear ratio 4:30 some one prior to me has changed the rear DIff My front diff says Dana on the cover straight axel raito 4:10 not good !
Is the diff a dana 80 in the rear 11:25 gear or 10:50 ? As so i can find the right ring & pinion for it the truck is a factory 4:10 from what i can find out any help will be appreciated on this . its pritty bad i had it to the dealer for it during the winter when i used the 4x4 in the snow got up to a certain speed and it was all over the place now i know why 2 differant gear raitos i just discovered this when i was checking diff fluid . and they had the nerve to tell me every thing was allright and took my $$$$
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