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PeterC · 08-15-2015, 09:09 AM

so 38 Coupe - with your chart (thank you very much!) 2354rpm @ 65mph is indicated for a 4:11gear and Columbia in high with a 28" tire - so both Kahuna and I are in sync at the "guestimated" 2300 rpm at 65mph - although with my 30" tire I am probably a tad lower rpm at 65mph - nice to know.

08-15-2015, 09:09 AM	#19
PeterC Senior Member Join Date: May 2010 Location: Connecticut Posts: 855	Re: COLUMBIA with 3.78 gears so 38 Coupe - with your chart (thank you very much!) 2354rpm @ 65mph is indicated for a 4:11gear and Columbia in high with a 28" tire - so both Kahuna and I are in sync at the "guestimated" 2300 rpm at 65mph - although with my 30" tire I am probably a tad lower rpm at 65mph - nice to know.