[Jim Wiens]

I have 2 ultra case 3rd members 4.56 gears 2200 hp turbo big tire car got about 12 1/8 runs on both. Teeth are bent and cracked on pinion and ring gears and they were both set up right. No tire shake i am at a loss i had a us gear 4.33 have almost a 100 runs before it got as bad as these

 

[PONYEATER]

Were the setup's identical? (backlash, preload etc) are you running a load bolt?

 

[wideopen231]

Since don't have set to look at how do the teeth compare between the 4.33 and 4.56. I mean thicknes and general size. Some ratios are just weaker due to what it takes to make them as a far as number of teeth. I wouldn't think that with 9.5 it be issue but just a thought.