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I'm working on this 72 gto 400 4 barrel, I replaced both manifold gaskets, pipes are new, donuts are good, and still theres this nasty exhaust leak??? Could It be coming from somewhere else? I know this sound stupid! But once again Im stumped. It sound like it almost has an open hedder!!! HELP!:eek:
 

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Well then here just might be a stupider answer......

Cold motor, hose down exhaust manifold/head area, collector/exhaust flange with heavy concentrate soapy water. Start motor and look for big, fast popping bubbles.
 

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You're there, we ain't. Does it sound like it's coming from the engine area exclusively? How does it sound from under the car? Midway back? What kind of exhaust is on the car?
 

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From what I have noticed with exhaust leaks is if its small and close the the engine then it sounds like ticking, loud ticking with a larger leak. Open header sounds may be further down the line a lil. Collector area. Dunno.. JR
 
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