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Backlash specs?

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Old 03-11-2004, 09:16 PM
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Default Backlash specs?

Does anyone have the proper backlash and pinion depth specs for 3.42 gears? I have heard confliciting numbers from different sources. Bottom line is my GM 3.42s are making noise and we're going to adjust them tomorrow and I want to get them right this time.
Old 03-13-2004, 09:35 AM
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The ring and pinion backlash specification is 0.005 – 0.009 inch but I recently measured the backlash of my 3.42 gears and the backlash was only 0.003 inch! These were the production gears at 23,000 miles. Pinion depth varies with different gear sets.

Last edited by Gary Z; 03-13-2004 at 09:40 AM.
Old 03-13-2004, 09:41 AM
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We had them at .012 and they were noisy. Reset to .006 and they are quiet now. Thanks.




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