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Unread 09-14-2013, 10:48 AM   #31
fourbtgait
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1983 CJ7 
 
Join Date: Aug 2012
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Thank you Keith for your input. I apologize if my synopsis of your gears/transmissions was a bit off, it is a bit difficult remembering and separating hundreds of posts in ones mind.

Do you feel then that the numbers on a gear calculator are fairly true and consistant from your experience?
And that 4.10, T5 and a 30.75" tire may be pushing it a bit? Though comparing your set up vs. mine on the calculator shows my 30.75 tire turning 100 rpm+ than yours.

Russell

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Unread 09-15-2013, 06:23 AM   #32
keith460
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1984 CJ7 
 
Join Date: Jan 2007
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I can't vouch for the gear calculator unless I'm looking at one but yesterday I had my CJ-7 out, and although it was getting dark, I could see that my rpm @ 60mph in 4th was 2500rpm. Shifted into 5th and that dropped the rpm down to 1900rpm @ 60mph.

Weight of the Jeep, tire diameter and the amount of air that is in them will also be a factor.
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