[Wayne Maybury]

OK it looks I have finally found the problem.

After changing the pickup coil, the MSD box, and fianlly the MSD coil, I had run out of "components" to change. The engine still did the same thing which was to cut out after running for some time. Let it sit for a couple of minutes and it would start right up and run normally, then stop again after a few more minutes.

I pulled the dash and took a look at the wiring. Checked all the connections on the ignition switch, grounds, etc. All was OK. I then noticed that a 10 wire connector didn't look right. The two parts were not perfectly in line with each other. I checked the wiring and sure enough the wire second from the end that was not properly inserted was the switched "+" feed to the MSD box. I took the connector apart and cleaned all of the metal tabs, put it back together and wrapped it with black tape to prevent it from coming apart again since it is necessary to push it into a tight place before re-installing the dash.

I have to assume that once the engine was running for a while, the connection would get hot and somehow enough resistance would build up to upset the current to the MSD box. Turning it off for a couple of minutes would allow the connection to cool down and re-establish the proper connection. I took it out last night and it ran fine. Time will tell if I really have the problem solved.

Wayne