Gear Ratio

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Aug 23, 2005 | 07:40 PM

hotrod48

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From: OK

Gear Ratio

I have found the gear ratio of the rear end in my truck before in a previous post. But my speedometer is off and I would like to know the original gear ratio (The rear-end was swapped by the previous owner). My truck is a 1981 2wd F-100. So my question is what is the axle code 01.

Thanks for the help,
hotrod48

Aug 23, 2005 | 11:35 PM

fordborn

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From: Northwest, Arkansas

Thread moved to " Clutch,Transmission, Differential, Axle and Transfer Case" Lets see if you can get more responses to your question here.

I can't find a code 01 in my book.

Aug 24, 2005 | 08:52 AM

hotrod48

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From: OK

Thanks fordborn. I couldn't find it either, but I'm sure someone knows.

Thanks,
hotrod48

Aug 24, 2005 | 10:28 PM

Purple55

Tuned

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From: South Carolina

Here's the link....

https://www.ford-trucks.com/forums/s...d.php?t=297637

Aug 25, 2005 | 09:33 AM

hotrod48

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From: OK

Thank you so much Purple55. Now that is the gear ratio in the truck now (At least what the axle tag says). Would a 235/75/15 make the speedometer 10 mph slow compared to a 215/75/15.

Thanks,
hotrod48