05-15-2019, 10:05 PM
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CC Member
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Join Date: Apr 1999
Location: cleveland,
OH
Cobra Make, Engine: CSX4000, 427
Posts: 1,999
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Not Ranked
Quote:
Originally Posted by RockBit
I don't get the numbers that you state. For a 2.88 rear gear, 26.5 inch diameter tire, and in 4th (1:1) I get the engine should be turning at 2192 rpm at 60 mph. Are you sure you have a 2.88 rear end ratio?
based on your numbers, the rear end ratio would be more like 3.22.
Anyway, the Tremec TKO with .82 OD would have you at about 2009 rpm at 60, as Gary pointed out.
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Yes.
here's the formula.
https://www.rcnmag.com/d-i-y/calcula...atio-tire-size
are you sure your mph is correct ? taking measurement from a gps ? or your speedometer ?
__________________
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