Can a valley pan gasket if bad give an intermittent ticking sound from the heat crossover?

[Sanitylost]

It’s not an exhaust leak, the noise is definitely coming from the intake and head area where the heat crossover is located.
This is on a bone stock 400 with 48k original miles.

 

[R413]

I suppose it could, anything is possible. Take the intake off and look around, it's easy enough on a BB. Unless it has A/C then it's a bit more to do

One time on a 78 360 I took the intake off and sitting in the intake port near the head was a screw in fitting from the floor of the plenum for the EGR. Something like that could be rattling around.

 

[eldubb440]

yes......unplug the plug wire on the cylinder it's connected to and see if it goes away

had this happen on an AMC, sounds just like an actual header leak

 

[Sanitylost]

Disconnected #6 and the tic stopped. Thank you for the recommendation.
Now the next dilemma block off the crossover or dont block it off

 

[bm02tj]

Possible heat riser tick

 

[DPeltz]

See you’re from NY. I’m in PA. I only drive my car seasonally. You can get valley pans with or without open crossover. Depends on your driving habits what would work best for you. Good luck.