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HIGHWAY RPM'S ?

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Old 05-16-2012, 07:09 PM   #1
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HIGHWAY RPM'S ?

Im trying to get an "out of the box" picture of what gearing translates to when the stock tires hit the road.

I have a base 2.7l tacoma with the standard tires and auto transmission. At 70mph im running at 2200 rpm.

I would like to know at 70mph, and in stock configuration, how many RPM's a base stick runs. Like wise a 4x4 2.7l base truck.

Thank you
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Old 05-27-2012, 07:14 PM   #3
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With Ohio speed limit at 65mph, I am turning right around 2000 rpm at 65mph. I can feel the engine coming up onto the camshafts sweet spot right around 1900 RPM right on through 2500 RPM. I am running 265X70R-16 tires.
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Old 05-27-2012, 07:32 PM   #4
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RPMs

There's a tool out there on the Web where you can enter in your gear ratios and tire size to get RPMs at any given speed. I thought I had it book marked, but I didn't. Do a browse and see what you turn up.
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Old 05-29-2012, 05:46 AM   #5
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Quote:
Originally Posted by 2bnb driver View Post
Im trying to get an "out of the box" picture of what gearing translates to when the stock tires hit the road.

I have a base 2.7l tacoma with the standard tires and auto transmission. At 70mph im running at 2200 rpm.

I would like to know at 70mph, and in stock configuration, how many RPM's a base stick runs. Like wise a 4x4 2.7l base truck.

Thank you
http://www.vibratesoftware.com/html_...ear_Ratios.htm

look up overdrive ratio and axle ratio, multiply them together to find overall ratio.

You can use the tire specifications on tirerack.com, specifically "revolutions per mile".

rev_per_mile x mile_per_hour = rev_per_hour. Multiply that by 60 and you have wheel RPM. Multiply wheel RPM by overall gear ratio and you have engine RPM.
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