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I doubt the CR is @ 11.0:1 here,not unless the short block was zero decked and the heads had been shaved some before being shaved that .012" this time.
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Maybe, maybe not. I do know that I ran a similar cam with RA heads in a 400 years back and though it ran OK I had similar issues- pinging, dieseling, heat soaking, etc. I installed a much bigger cam, one of the old Crane Fireballs, and the engine was a lot happier. But that was on a 4spd car with a big gear and no power brakes, so I could get away with the "racy" cam.
We are all just guessing, and compression numbers would help tell where this one stands.
Though the intake/carb combo, no vacuum advance etc. are not the way I would go and are probably not helping the situation.