That's interesting. The gear set I have has the recommended pinion depth marked at 3.130 and they also have the backlash marked at .004 which I thought was tighter.
Hmmmm. It might be possible (some would say probable...including my wife) that I'm wrong on that.
And now that I'm sitting here, trying to remember the last two gear sets I did (5.57 for my race car and some 4:30's for a buddy) I may be wrong. The pro gear is softer so they may have the tighter back lash.
