Lt1 tapping sound - Page 2 - LS1LT1 Forum : LT1, LS1, Camaro, Firebird, Trans Am, Engine Tech Forums
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post #16 of 21 (permalink) Old 09-30-2016, 09:26 AM
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No no I corrected myself it hovers closer to 40psi. It actually doesn't seem to change whether it is hot or cold.
Check with another mechanical gauge. It shouldn't be your main concern now though. Find the tick.

1995 LT1 Wagon. ERE 383
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post #17 of 21 (permalink) Old 09-30-2016, 09:27 AM Thread Starter
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About 50 psi. That's close to what I run on the interstate (2750 rpm)

How do I make the picture larger for this forum?

So wait... Its 60 PSI hot idle, and 50 PSI hot 3k? Meaning it drops 10 PSI at higher RPM's?

Here's another video, and forgive my daftness the car's hardly been on the road more than a month and I've just got off work from a long night.

https://youtu.be/xwxhgL12xsM
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post #18 of 21 (permalink) Old 09-30-2016, 09:38 AM
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That looks normal. Is the car running true-duals with a sidepipe out either side?

1995 LT1 Wagon. ERE 383
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post #19 of 21 (permalink) Old 09-30-2016, 09:40 AM Thread Starter
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That looks normal. Is the car running true-duals with a sidepipe out either side?

Yes true dual long tube headers, both sides.

The popping appears to only be driver side.
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post #20 of 21 (permalink) Old 10-02-2016, 10:16 AM
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I would jack the car up , ( use jack stands ) and get under it and see if that noise is coming from the bottom end.

Last edited by Workman; 10-02-2016 at 10:18 AM.
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post #21 of 21 (permalink) Old 10-02-2016, 10:21 AM
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Have you checked your oil yet btw ?
Glittery ?
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