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Unread 10-29-2013, 08:02 PM   #1
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1992 YJ Wrangler 
Join Date: Oct 2013
Location: mpls, mn
Posts: 1
automatic transmission

Any body know what the rpm"s should be at 55mph? I am a new jeep owner. It is a inline 6cyl with 85,000 miles. At 55mph they are at about 3000 rpm"s.

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Unread 10-29-2013, 09:24 PM   #2
Web Wheeler
1983 CJ8 
Join Date: Jul 2008
Location: Cow Mountain, CA
Posts: 1,076
Depends on gearing and ehat gear u r in
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Unread 10-29-2013, 09:33 PM   #3
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1992 YJ Wrangler 
Join Date: Dec 2012
Location: Las Vegas, Nv
Posts: 622
With stock size tires, 235/75/15, and stock gearing, 3:55 (I think) I was turning @2800 to 2900 at 70 mph. This is with the non lock up torque converter version. This is assuming my stock tach was accurate, and I think it is.
92 Sahara, 4.0 auto, OME, Bilstein, booms, 4:10's need bigger tires...
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Unread 10-30-2013, 10:15 AM   #4
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1987 YJ Wrangler 
Join Date: Mar 2008
Location: corpus christi, texas
Posts: 6,024
i think its around 2k-2200 for stock with 3.55 gears and 225 tires. mine only runs around 2400 or 2500 at 65mph
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