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post #1 of 4 Old 10-29-2013, 08:02 PM Thread Starter
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1992 YJ Wrangler 
Join Date: Oct 2013
Location: mpls
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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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post #2 of 4 Old 10-29-2013, 09:24 PM
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1983 CJ8 
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Location: Cow Mountain
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Depends on gearing and ehat gear u r in
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post #3 of 4 Old 10-29-2013, 09:33 PM
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1992 YJ Wrangler 
Join Date: Dec 2012
Location: The Desert
Posts: 6,239
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.

My Jeep is NOT a Fiat!
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post #4 of 4 Old 10-30-2013, 10:15 AM
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Location: corpus christi
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i think its around 2k-2200 for stock with 3.55 gears and 225 tires. mine only runs around 2400 or 2500 at 65mph

I don't feel like working on anything at this time so i sold my yj.
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