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High RPM Transmission Buzzing Noise (Aftermarket)

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Old Jul 6, 2017 | 10:28 AM
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Default High RPM Transmission Buzzing Noise (Aftermarket)

I got South Bend Complete Clutch & Flywheel Pack with Quiet disk. Car drives great, but whenever I get my RPM up (6k+) and I let off the gas as I'm about to shift, I get a grindy buzzy noise from my transmission.

Just wanted to see if anyone else has the same issue as I do and wondering if it's normal.
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Old Jul 6, 2017 | 05:23 PM
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I'd be looking at the exhaust.
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Old Jul 7, 2017 | 05:08 PM
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Sounds like resonance. You could try a good butyl aluminum like dynamat or some other brand of cld tiles under the carpet in that area to stop sound. Or make sure everything is tightened up on exhaust
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Old Jul 7, 2017 | 08:45 PM
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I'll double check my exhaust when it gets cooler. Just wanted to see if it was my transmission / flywheel.
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Old Jun 25, 2018 | 07:50 PM
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I also installed south bend stage 3 with lightweight billet flywheel and cmak delete kit, I’ve got over 3k miles on the new parts, and at high rpms I am experiencing a buzzing/ metallic rattling noise thru my clutch pedal itself. Was wondering what conclusion you might have come to.
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Old Jun 29, 2025 | 04:22 AM
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Default Was that buzzing sound like this?

https://share.icloud.com/photos/006p...SRb8no4ypqO0dA

what did you end up doing?
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