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Riocobravert · 07-11-2008, 06:53 PM

So I went and bought a 16 tooth today, as small as they make according to the Ford parts guy. That got it closer, it's only off by about 6% now, speedo says 56 mph at 60 mph. Any ideas how this was changed for the 4:10 ratio. I'd really like to figure it out so that I can put it back the same way it was changed.

07-11-2008, 06:53 PM	#2
Riocobravert Registered Member Join Date: Nov 2006 Posts: 4	Re: Speedometer calibration So I went and bought a 16 tooth today, as small as they make according to the Ford parts guy. That got it closer, it's only off by about 6% now, speedo says 56 mph at 60 mph. Any ideas how this was changed for the 4:10 ratio. I'd really like to figure it out so that I can put it back the same way it was changed.