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driving 3000 miles on 3.73s with gear whine on deceleration

This is a discussion on driving 3000 miles on 3.73s with gear whine on deceleration within the Drivetrain forums, part of the LSx Technical Help Section category; Would this be safe? I'd be driving from Colorado to California. Car doesn't whine during acceleration, only on deceleration. they ...

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    Member JacobLS1's Avatar
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    driving 3000 miles on 3.73s with gear whine on deceleration

    Would this be safe? I'd be driving from Colorado to California. Car doesn't whine during acceleration, only on deceleration. they are Motiv's with a few thousand miles on them. I've heard aftermarket gears are normal to whine over OEM gears, but i'm still skeptical. Any information on this would be great.

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    Were the gears professionally installed? If yes, check with the installer, if no, your back lash may be off. I would also contact the company that sold you the gears and ask them also..Good luck..

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    Member JacobLS1's Avatar
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    Quote Originally Posted by cruzincamaro View Post
    Were the gears professionally installed? If yes, check with the installer, if no, your back lash may be off. I would also contact the company that sold you the gears and ask them also..Good luck..
    they were done at a shop, not so sure if the guy was "professional". I'll call motive tomorrow. and you're not supposed to change the backlash after the gears have been drivin on, correct?

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    Former Mopar Man 2002ssslp's Avatar
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    Quote Originally Posted by JacobLS1 View Post
    Would this be safe? I'd be driving from Colorado to California. Car doesn't whine during acceleration, only on deceleration. they are Motiv's with a few thousand miles on them. I've heard aftermarket gears are normal to whine over OEM gears, but i'm still skeptical. Any information on this would be great.
    Colorado to California, 3000 miles ?
    My ride is a 2002 Camaro SS SLP #3296 with 30k, LTH, 3" Y, CME, Frost tune, K&N, ported TB, Blackwing lid, Bellows, MSD, Denso Iridium, and 85mm MAF, Bilsteins, Eibach springs, SLP strut brace, Adj. Panhard, TA Girdle, UMI, Pro 5.0, Nitto NT555
    My wife has a 2004 GTO with the rare SAP, 18" wheels, K&N Cold Air System, MSD, Ported TB, Frost tune, Denso Iridium, Flowmaster cat-back, 3200 Yank, 75k

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    its short but its skinny. jiveass's Avatar
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    Quote Originally Posted by 2002ssslp View Post
    Colorado to California, 3000 miles ?
    thats what i was thinkin

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    Gears are not supposed to be noisy. Either the pre-load is wrong, the backlash is wrong, or the pinion depth is wrong. There's a lot to setting up a rear end properly. If the mechanic didn't have experience doing one, he/she very well could have set something up improperly; wrong tolerances.

    Once the gears are installed and the contact pattern is set between the ring gear and pinion, there's nothing you can do about it. You'll have to live with the noise or install new gears.
    It's on jackstands.

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    Member JacobLS1's Avatar
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    Quote Originally Posted by 2002ssslp View Post
    Colorado to California, 3000 miles ?
    Round trip and a little excess, i over estimate for trips. It's only 2600 necessary miles.

    Quote Originally Posted by 35th-ANV-SS View Post
    Gears are not supposed to be noisy. Either the pre-load is wrong, the backlash is wrong, or the pinion depth is wrong. There's a lot to setting up a rear end properly. If the mechanic didn't have experience doing one, he/she very well could have set something up improperly; wrong tolerances.

    Once the gears are installed and the contact pattern is set between the ring gear and pinion, there's nothing you can do about it. You'll have to live with the noise or install new gears.
    That's what i thought. I was curious if i should buy a used rear (complete, 3.42s, $300) or if my gears would be safe with them whining.

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    Veteran 0rion's Avatar
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    as long as it's just on decel you'll be fine.....and for what it's worth I knew you meant round trip

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    Just be careful in CA, they crush cars for street racing.

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    Quote Originally Posted by az gt eater View Post
    Just be careful in CA, they crush cars for street racing.

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    My Moser has whined and made noise since it was new. Drive it.


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