LT1-LT4 Modifications 1993-97 Gen II Small Block V8

Spec Stage 3 Noise

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Old Dec 18, 2011 | 12:33 AM
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Default Spec Stage 3 Noise

Hey guys I need to check out a noise. I was moving my car to begin tear down for low oil pressure. Anyways I gave it a quick rev to help build some pressure up. Maybe 2500 rpm. When I did the clutch gave a nasty growling noise. Sounded real bad.

Its happened before and I thought it was the new throw out bearing. The spec one was separating. So I replaced it with a space I had from another clutch set. Anyways the noise is back. Here is a video of it the first time. I am hoping its not the clutch as this one has like maybe 650 miles on it. Trans was rebuilt as it bearings failed in that.

Adding that this noise is only when the clutch is pushed in. Once you release the clutch it goes away and come back at random. Any ideas on what could cause this?

http://www.youtube.com/watch?v=TVdAX...9&feature=plcp

Last edited by 96Formula6spd; Dec 18, 2011 at 10:57 PM.
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Old Dec 24, 2011 | 11:41 PM
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Bump for any ideas. Thinking it may be the clutch disc. Going to have the car apart soon to check it out. Anybody got any ideas.
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Old Dec 26, 2011 | 07:32 AM
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Maybe my speakers suck but I cant make out any noise issure from your video.
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Old Dec 26, 2011 | 08:10 AM
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You have a pilot bushing or bearing?
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Old Dec 26, 2011 | 12:35 PM
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Yeah I have a bushing in place. As for the noise its a grawling noise. It could be bad speakers. I should have got the video with the clutch out to hear the noise go away.
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Old Dec 26, 2011 | 12:41 PM
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Once you take it out you need to carefully inspect the input shaft and bushing to see if it has excess wear. Is the bushing new?
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Old Dec 26, 2011 | 12:42 PM
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Brand new bushing. Input shaft was cleaned 500 miles ago when I had the whole transmission rebuilt. Will check everything.
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Old Dec 26, 2011 | 12:48 PM
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Autozone bushing?
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Old Dec 26, 2011 | 12:53 PM
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OEM. Block was an auto block. Had a brand new bushing in place. Noise has only been on this block. Old block with same setup had a new zoom one. Thinking now I may swap the spec one from this clutch in for good measure.
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