Loud ticking on acceleration

[Al 29Tudor]

A club members 30 Tudor has a loud ticking on acceleration and it sounds like an exhaust leak or a valve banging. It starts right up and idles fine. How can we check for an exhaust leak or a valve noise?
Thanks for your help. Al

 

[Brentwood Bob]

Cracked exhaust manifold,leaking muffler clamp fit up, blown Intake/exhaust gasket. Spray wd40, look for soot,
A piece of garden hose will localize the sound.

 

[Al 29Tudor]

Thank you Bob

 

[J Franklin]

Check for cracks in the cooling fan, or fan blade close to hoses.

 

[Fullraceflathead]

I would bet it's an exhaust leak!!!

 

[Bob Bidonde]

Too much spark advance??

 

[eagle]

You do know what PING sounds like? Retard the spark, if it goes away you are hearing pinging. Ping will destroy your engine.

 

[Al 29Tudor]

Thanks guys. It's not a ping it's more like a harsh snapping sound.