ignition timing
I have been reading all of the comments about ignition timing. I have a 65 GTO, .030 overbore with an HO 744 cam, set 3 deg advanced. The tuneup specs say, with the vacuum advance hose disconnected, the timing should be 6 deg. advanced. My question what happens if it is set at 12 Deg. advanced. Does this cause the engine to overheat driving at 3,000 RPM and under a load?
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