'55 F100 new project, new member

[AllenV]

Well, I am destined to find out, and add my own Pertronix anecdote in time.

On another topic: As I was changing spark plugs yesterday I found that cylinders 1,2, and 7 have had threaded inserts installed. See photos. remarkable in that the plugs with inserts sit substantially further out than the unmolested plugs. How common is this? Should I be concerned? shopping for heads?

The motor seemed to run well when I bought it. Though the choke was stuck full on during the test drive. That was due to a broken choke cable housing, since replaced. As such I have so far only experienced a very fast idle with full choke and a broken vacuum diaphragm on the distributor . I am expecting a much more civilized experience when I get the new distributor installed and timed. Thus I ask the collected expertise if having 3-of-8 plugs "helicoiled" might be a cause of rough or uneven idling.

[dmsfrr]

Those look like anti-fouling inserts, to help keep oil off the sparkplug tips.
.

[AllenV]

That is a new one for me. Didn't know of such things. I'll leave 'em for now. See how it runs and get through the compression and leak-down tests.

Thanks again

[KULTULZ]

Used to control poor cylinder oil control - fouled spark plug.