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

LT1 Knock

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Old Oct 22, 2009 | 12:26 PM
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I drive a 94 z m6 and I have a knock sound coming from the tranny. The car sounds good but the more i rev it, the louder the knock gets. I take my car almost to redline and it feels like the shifter gets stuck. What do you guys think this can be??
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Old Oct 22, 2009 | 01:03 PM
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Originally Posted by 94greenlt1
I drive a 94 z m6 and I have a knock sound coming from the tranny. The car sounds good but the more i rev it, the louder the knock gets. I take my car almost to redline and it feels like the shifter gets stuck. What do you guys think this can be??
sounds like you better start saving up for a trany rebuild.
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Old Oct 22, 2009 | 01:11 PM
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yep, that sucks
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Old Oct 22, 2009 | 01:27 PM
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Is it coming from the bellhousing or trans?
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Old Oct 22, 2009 | 01:28 PM
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do you hear a knock or a cluck if a cluck check your bearing in your u joint
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Old Oct 22, 2009 | 04:42 PM
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I actually just bought this tranny from a friend and it was working on his camaro, it sounds like its coming from the bellhousing i need to double check on that, you can even feel a little vibration on the clutch pedal, but yeah its more of a cluck but hopefully its not something major
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Old Oct 22, 2009 | 05:20 PM
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Did you install new pilot bearing? Does the sound happen when its in neutral?

Last edited by LT1; Oct 22, 2009 at 05:27 PM.
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Old Oct 22, 2009 | 06:37 PM
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did you tighten all the bolts on the clutch and FW to spec?
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Old Oct 22, 2009 | 11:08 PM
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Yeah the clutch kit came with the pilot bearing too, it makes the sound in neutral just not as loud as when your driving or reving it.

Yeah i asked the mechanic if he tightened everything to spec and he said he did. Do you think maybe a cracked bellhousing can cause this??
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