Quote:
Originally Posted by Puddin
Yeah that's not good. I'd pull that Rotofab off and the catch can if you still have any warranty left. If not looks like it's time for a possible rebuild at the very least from the heads up.
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It almost sounds like there is a backfire through the intake, but like someone else above said that would be caused by a broken valve spring.
Another thing the valve seats on these LT1s are known to be very weak, especially when you put more aggressive cams in them.
Is everything else stock?