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1948 - 1956 F1, F100 & Larger F-Series Trucks Discuss the Fat Fendered and Classic Ford Trucks

Highway gear

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Old Apr 9, 2010 | 11:57 PM
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jake08
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Highway gear

Good evening all. Your help will be much appreciated. I have a 54 Ford F100, 223ci six with Ford O Matic. Currently geared 3.73 I want to be able to drive 65mph. without turning 3000rpm. Do you think the six cyl. can pull 3.23 final ratio?
 
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Old Apr 10, 2010 | 12:09 AM
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Sure, and that would probably be the ideal ratio if you still have 16 inch wheels!

There is another thread going on about gearing at the moment that you might want to look in on!
 
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Old Apr 10, 2010 | 12:19 AM
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Thanks Julie; i currently have 15in., 28in. dia. tires. Just don't want to make an expensive mistake.
 
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Old Apr 10, 2010 | 12:30 AM
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Originally Posted by jake08
Thanks Julie; i currently have 15in., 28in. dia. tires. Just don't want to make an expensive mistake.
235/75R15s?

You should hit 65 at about 2600 rpm with that and a 3.23.

Heres a fun RPM calculator:

Gear Ratio Calculator.
 
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