[Rick Parker]

On the lines of electrical it could also be the magnetic pickup in the distributor. Heat can cause an open circuit which creates the primary side of the ignition to fail. If you have an MSD ignition box here is a check for that the next time it happens:


If you are using the 2-Pin Magnetic Pickup of the MSD to trigger the ignition, follow these steps.

1.Make sure the ignition switch is in the Off position.
2.Remove the coil wire from the distributor cap and position the terminal so it is approximately 1/2" from a good ground.
3.Disconnect the MSD Magnetic Pickup connector from the distributor.
4.Turn the ignition to the On position. DO NOT CRANK THE ENGINE.
5.With a small jumper wire, short the Green and Violet magnetic pickup wires together then pull the jumper off. Each time the short is removed a spark should jump If spark is present, the ignition is working properly, so is the coil.

Do this before it cools down to isolate the problem.