Originally Posted by big gear head
I have more trouble with 9 inch gears than any others. I don't know why. I think I would have used the 3.70 gear instead of the 3.75 because the 3.70 is a more popular ratio and produced in higher numbers. They usually work harder to get things right on the high production gears than they do with the low production stuff.
Thats nice to know. Thats the reason I got rid of the 7.5 10 bolt. I couldnt get the gears to setup in them for anything and not make noise. Plus they are weak. I thought with the simpleness of setting up the 9 I could get this thing done and in the car. Looks like I might be buying another ring and pinion. Do you just mainly use Yukon? Should I try to find an original Ford ring and pinion.