1988 FSB, 351W, Towing Package
This sound came about after put new headers on and deleted the EGR. I believe the headers are on tight and I put a thick RTV layer on the EGR air intake block off plate. I also put a threaded plug at the outlet for EGR on the header, but didn’t seal it with anything. Could this be it? Should I seal that with some tailpipe/muffler sealer I have on the threads?
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