Well I set mine at .006” with used 3.69 gears. Thats max for the factory spec.
I thought that might be possibly a little loose and be noisey. I called my buddy at the race shop and he said the pinion depth is more of a contributer to noise than backlash is.
He said to set it up with the best contact pattern, and dont sweat the backlash number, which is what I did.
I havent installed it yet, so we will see..
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