This is topic rear end gear question? in forum Tech Talk at Northern California Ford Owners  .


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Posted by whitelx50 (Member # 6512) on :
 
I have a 1990 5.0 with an auto. what are the stock gear ratio in the diff?
Thanks.
 

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Posted by SmokinLX (Member # 1684) on :
 
273's if they are stock.
 

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Posted by court (Member # 6700) on :
 
you can look on the door tag....if the car hasnt been molested.
 

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Posted by BlowN67 (Member # 4229) on :
 
or mark the driveshaft an put a mark on the hub or wheel. an count hany time the driveshaft spins to one time around of the wheel.
 

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Posted by HaulinAss Motorsports (Member # 541) on :
 
It can be a 2:73,3:08 or even a 3:27 with that year and trans combination.There is no standard gear.You can check the tag on the rear cover which will have ratio as well.It is the numbers located right near the cover bolt,you MAY need to remove it to read it.

It will have a Number such as 2,3 etc...followed by 2 letters and then 2 more number.

So it can Look like this

Example: 2ld73

The ratio would be 2:73

Hope this helps!
 

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