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Mark Ugrich · 08-04-2017, 10:03 PM

Aren't the actual ratio numbers determined by ring gear size /diameter and pinion location ? I was told that is the reason a Ford 9" has a different selection of ratios vs. a 12 bolt or Dana .

08-04-2017, 10:03 PM	#5
Mark Ugrich Member Join Date: May 2011 Location: Auburndale,Florida Posts: 220 Likes: 29 Liked 71 Times in 38 Posts	Re: 12 bolt ring and pinion question Aren't the actual ratio numbers determined by ring gear size /diameter and pinion location ? I was told that is the reason a Ford 9" has a different selection of ratios vs. a 12 bolt or Dana .