<BLOCKQUOTE class="ip-ubbcode-quote"><font size="-1">quote:</font><HR> Try disconnecting the vacuum advance and see if the pinging goes away. You should not be having a problem unless you are running really low octane gas.
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That's my point. Disconnect the vacuum advance, and all is good. This motor makes enough vacuum that at light throttle the vacuum advance opens, and it pings. Get in it harder to get the vacuum to go away, and it stops pinging.
So the answer is either get a vacuum can that opens with a higher vacuum number, in the order of 12 to 15 inches, or just get on it all the time. Fun, but impractical.
I run 91 octane (at $2.36/gal currently) all the time. 10 degrees static timing (tried it a 8, no help), 32 degrees all in at 3000.
TIGER EFI - Electronic Fuel Injection for the Traditional Pontiac Engine.
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