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Old 01-27-2019, 06:32 PM   #216
panel fan
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Join Date: Nov 2015
Location: Whitby Ontario Canada
Posts: 12
Re: Eaton HO72/HO52 vs. 14 Bolt FF

Jeremy , I will figure out how to post pictures when I remove the 3:90 from the truck in April as I am presently out of the country , actually I'm in your country till the end of March .
I took a quick look at the crown gear before installing and it had a what I believed was a G M model number stamped on it as well as the numbers 39x10.which I understand means a 3:90 ratio which is backed up by the online sight ( ONLINE CONVERSIONS) which matches up to speeds obtained at given r.p.m. in different gears.
I assure you I was quite surprised to find the 3:90 in the housing I bought as I was expecting a 5:13

Until then
John
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