Gear tooth count

[DMacRacer]

Anyone know the Ring and Pinion tooth count on 3:73 gears? Is it true you can divide the pinion gear count by the ring gear count to get the ratio?
Thanks.

 

[drakesdad]

Anyone know the Ring and Pinion tooth count on 3:73 gears? Is it true you can divide the pinion gear count by the ring gear count to get the ratio?
Thanks.

Yes......I didn't believe it but the guy that changed my 3:27's showed me. I'm not sure it was the other way around but he had me count the teeth and he did the math...lol

 

[drakesdad]

I'll make it easy for you...........................lol

http://www.tyres1.com/calculators.html

 

[drakesdad]

I have been told of this method as well to verify what is in your car if you cant read the plate or it has been changed.



http://www.getahelmet.com/jeeps/tech/findratio/

 

[DMacRacer]

Thanks, all that helps out. I also read in a Ford Performance book that with 26 inch diameter tires with 3:73 gears I should be at around 1900 rpm at 60mph.
That is what I'm at if the speedometer is correct.

 

[BlackVert]

yep ring tooth count / pinion gear count

iirc i think it is 36 ring teeth and 11 pinion teeth

36/11 = 3.272727

 

[DMacRacer]

Did the old turn the drive shaft and tire and counted each turn, 3 3/4 for the drive shaft to one turn of tire and per the link above I should have 3:73 gears as the seller told me.
Thanks for the link

 

[drakesdad]

Did the old turn the drive shaft and tire and counted each turn, 3 3/4 for the drive shaft to one turn of tire and per the link above I should have 3:73 gears as the seller told me.
Thanks for the link

Glad to help...............and I forgot...................
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