CamaroBill122090

Hey everyone I'm new here and I could rear use everyone's experiences and advice. I have a 2000 camaro z28ss and the problem I have is my 12 bolt moser. The torque arm bolts on top broke t and the bottom front stripped out and the bottom back snapped off in the hole and I was wondering how and if I can machine it out????? Also the reason this happened was the pinion angle was off I could afford a garage and I installed lca's and bmr trans mounted torque arm both non adjustable and the car is lowered. Which was my uneducated result. I just can't afford another rear. And I really like this 12 bolt.btw it's a 12 bolt moser 4.33 gears all chromeoly I think eaton posi. Has anyone delt with this befor ?????