just got 3.73 gears. there is no label or identifcation on or in the box, how am i suppose to know if i even got 3.73's. and has anyone heard of AAM, american axle manufacturing? thats the box they came in, there suppose to be gm gears.

 

# teeth on ring gear/# teeth on pinion gear = gear ratio

 

Count the teeth on the ring gear. Divide that number by the number of teeth on the pinion gear = gear ratio.

 

what they said

 

thanks, anybody know anything bout AAM?

 

Do a search on the I'net. They appear to be a very large supplier of gears to the automotive inudstry.