Re: Timing issue on a 292?
Ignition timing and vacuum advance confuse people, because they are usually a little uncertain how it works. Follow the instructions. Disconnect the vacuum advance and plug the vacuum port at the carburetor. Make sure the initial setting is accurate at idle, somewhere between 6 and 12 degrees is fine. But you're not done yet, make sure the distributor advances the timing smoothly all the way up and back down at high RPM and back again down to idle. Most any OHV V8 ever made wants about 34 to 36 degrees total timing. Keep in mind "total timing" does not include vacuum advance.
Retarded ignition timing will often run extremely (red) hot in the manifolds and exhaust, because much of the the fuel charge is no longer burning in the combustion chambers where it belongs, and it will be down on power severely.
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