Need Help 4l80E Noise 1-2

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08-01-2012, 03:40 AM

Mr Monaro

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Need Help 4l80E Noise 1-2

Hi making 740rwh forced induction 7 passes at track first to second gear noise coming from gear box 3 to overdrive fine it has drum input shaft have been upgraded,opinions would be great trying to nail it.
cheers
joe

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08-01-2012, 10:53 AM

Jake's Performance

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Does it have straight cut gears?

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08-01-2012, 04:23 PM

Mr Monaro

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Good question still running standard gears was strait cut gears standard fitment or option.
Thanks keep opinons coming thanks Jake

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08-01-2012, 09:37 PM

Mr Monaro

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Better description whinning noise

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08-02-2012, 03:21 AM

Mr Monaro

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No strait cut gears Jake.

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08-02-2012, 10:07 PM

Jake's Performance

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4L80Es are a bit noisier in low and 2nd than most other units and a straight cut gear unit (motorhome) is very noisy, but if it's excessively noisy and not a straight cut, it's likely an issue with the planetaries.

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