Percolation? Heat soak? Don't drive during summer??

318willrun said

Sorry, just skimmed through this thread. When it don't start, did you pull the coil wire from the distributor and verify it has spark?

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Another question, when you try to start it and it won't start, does it give a brief cough when you let off on the key from trying to start it? Reason I'm asking is I've seen pickups in the distributor act like that when hot. Just throwing it out there, hard to diagnose over the internet.
*and yes, I seen where the distributor was rebuilt and had a new pickup. Sometimes things don't work properly right from the box.