[retiredat444]

a loose baffle plate in a muffler or other exhaust part wil make that sound! only thing you can do is find out if it the muffler or the convertor and replace it... it prolly in the muffler.... get close to it with it running and listen for the loose baffle plate in the muffler..


problem idnetified... and solved..

 

[retiredat444]

so you dont think it could be the heat shield on the Catalytic converter? is the original shield supposed to have bolts into it? mine does not.

also... 1 bolt is missing from my exhaust manifold. and it appears to have a hairline crack about 4 inches long maybe more i cant see... im going to post some pics tonight.

you didn't ssay the whole exhaust system, is falling apart, so it could be more..