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I ran ported vacuum. This was during the last 100 miles before I pulled the motor for the teardown, so I didnt get much seat time to determine any fuel savings or driveability improvements. I am collecting the parts for reassembly now. I yanked the motor because of an oil burning condition. I have run the gamut with bad cams, a broken rocker shaft, valve stem wear and who knows what else. When I tore down the motor, I didnt find a smoking gun as to why it burned oil, but the machinist did. The rings were bad, and the cylinders were smoother than they should have been for a motor with less than 3000 miles on it. I had the cylinders deglazed, cleaned the pistons and I'm cleaning eveything for the re-rebuild. The rings and bearings just came in yesterday, and by midweek I hope to be ready to set the heads. NOW is the time to decide on head gaskets. I could simply default to the Fel Pro #1009s since I already have a pair.....



Sounds like there were a lot of things not right before. I would be cautious in solving the detonation problem when apparently there were other things going on with the motor.

This alone....
Quote:

"I yanked the motor because of an oil burning condition."

.....could be the cause of your detonation problem.