put a new cam in my 65 c10 longbed. I put on some 40 series Flowmasters. Thrush welded 2 chambers have this horrible ping sound at idle.
http://www.youtube.com/watch?v=h2MmRBAVU7Q
http://www.youtube.com/watch?v=qTIQuApn3Zg
http://www.youtube.com/watch?v=h2MmRBAVU7Q
http://www.youtube.com/watch?v=qTIQuApn3Zg
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