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4.88's to low?

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Old 08-29-2010, 10:19 PM
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Year: 1985
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Engine: 2.5
Default 4.88's to low?

I am looking into ordering this

http://cgi.ebay.com/ebaymotors/CHRYS...Q5fAccessories


i am running a 2.5L 4sp w/ 33x12.50's

will my jeep even make it up to highway speeds with 4.88's?

I really need to look into finding an ax5 and np231 I suppose.
Old 08-29-2010, 10:37 PM
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This chart is based on 65 MPH and a gear ratio of 1:1, on a manual transmission in 4th gear. Please NOTE: If you have an automatic transmission your RPM will higher due to slippage in the transmission and the torque converter. With an overdrive transmission your RPM in overdrive will be 15% to 30% less than indicated.


this should show you where you wont to be at.
Old 08-29-2010, 10:39 PM
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4.88s rock go for it
Old 08-30-2010, 08:26 AM
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That is a great price for the gears and the master install kit. With a four speed you'll be turning a lot of rpms even with 33s, but if your already looking for a five speed I say go for it that will be a hell of a hard deal to beat.
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