End exhaust valve is sitting lower, assume it is shot?

Valve

 

Lay a straight edge across the tops of the valve stems. Is that one higher than the rest? Or not.

It could be an artifact from previous valve job work or it could be toast. It might be a replacement valve unlike the others.

Regardless, consider it suspect.

 

valves look different.

 

Poured water into all the exhaust ports, couple are dribbling but that one is leaking all around, so not usable.

 

Do you have a spring compressor ?
If so , please remove those valves . Take pics , and we will see what the valves and seats look like .

 

Yes I do, I'll take them out later tonight.

 

Looks like it might be valve recession due to no lead gasoline and soft valve seats. As stated are the tops all the same height? If they are, the seats are gone.

 

Outer valve on left

Normal seat

Recessed seat

 

I would recommend taking them to a reputable machine shop , and going with whatever they recommend .
To my way of thinking , I would install new hardened seats on all exhaust . and replace all exhaust valves .
Intake valves may also have to be replaced if the " margin " is too narrow after grinding .
The guides should all be knurled and reamed .

 

Woof. Was this engine running on salt water instead of gas?

 

Looks like this head had been off of the engine for a long time.

 

I got a great deal on them and a port o sonic intake, they had double valve springs and adjustable rocker hardware, crossovers blocked, must have been a big cam.

I have a fresh set of c heads so they will head to storage, thanks for the help.

 

Looks like water has been sitting in it. Actually does not look like your typical receded valve from unleaded fuel. Might have been sunk in and someone tried to save it with a valve job instead of putting a seat in it.