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A question for 5.4L F150s' with 3.55's. What is your RPM at 70mph?

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Old 02-05-2002 | 09:31 PM
RMcoolX's Avatar
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From: Houston (northwest), TX.
A question for 5.4L F150s' with 3.55's. What is your RPM at 70mph?
Is there a calculator somewhere to calculate this based on gear ratio and tire size?
 
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Old 02-05-2002 | 09:34 PM
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Do you really think that any of us here on the board would go OVER 70 miles per hour? Nahhhh.....
 
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Old 02-05-2002 | 09:46 PM
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With 17" rims on a 4x4 they run about 1800 RPMs
 
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Old 02-05-2002 | 09:50 PM
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From: Sugar Land, Texas
With the stock 28" tall tires and 3.55 gears we were turning about two grand in overdriver. With the 3.73's we turn about 2250RPM.
 
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Old 02-05-2002 | 10:29 PM
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From: Mentor, Ohio, USA
Thumbs up Vruhm you truck is sweeet!
That is exactly what I want for my perfomance vehicle. I love it.

Bob
 
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