What RPM.... - Ranger-Forums - The Ultimate Ford Ranger Resource


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Old 08-03-2005
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What RPM....

Ok so I just got my transmission rebuilt to a heavy duty setup and I also redid my rear-end and went from 3.55 to 4.56 gears. The RPM's have risen slightly and I was wondering what everyone was running as far as gears and tires. What are your RPM's at around 70mph.
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Old 08-03-2005
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Did you get your speedo re-calibrated?

You changed gears DRASTICALLY, so your shift points, and speedometer are BOTH off.

So are the miles you put on the truck


EDIT: pretty much everything that has to do with the speedo is off..

Gas mileage,speedo,shift points


your rpms are right, just have nothing to do with anything else, just redline..lol
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Old 08-03-2005
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Yeah what leo said. With your gears and tires both different, everything is gonna be all fubar.
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Old 08-03-2005
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they are right but...

32s, 4.10s, auto, 2400rpm @ 70.
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Old 08-03-2005
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i know with what zach said at 90 mph 3000 rpm
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Old 08-03-2005
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Sorry guys forgot to mention I had the comp flashed the same day it came out of the shop...all readings are right as rain.
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Old 08-03-2005
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Quote:
Originally Posted by ToughFord
i know with what zach said at 90 mph 3000 rpm

get that body lift on yet?
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Old 08-03-2005
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225/45/17, 5-speed, 5,125rpm @ 180.
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Old 08-03-2005
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^^^ shut up.
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  #10  
Old 08-04-2005
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33s, 4.10s, 5 speed manual, not calibrated. On the speed limiter (92-93mph) my buddy paces me and says its about 100-102mph and I am @ 3200 rpm...
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Old 08-04-2005
D.
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28inch tall tires, 3.73 gears.. Second gear its at about.. 5grand. 3rd gear its close to 3200.

D.
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Old 08-04-2005
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stock 235/75-15 tires, 4.10's, 5speed manual, 2800 RPM at 70mph (too high)
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Old 08-04-2005
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245/75/16 tires with 4.10 and I turn about 2450ish at 70.
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  #14  
Old 08-04-2005
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Ok thats great. The little increase I got isn't so bad at all, just that its noticable. I was just trying to get an idea at what I should be close too. Thanks guys
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