Original Message
RE: You need vacuum advance.
By Royce Peterson - 10/01/2001 2:45:20 PM; IP 205.188.193.168
Steve,

There is probably a point where if you have way too much compression combined with a mild cam that the pinging would be impossible to get rid of. Have you ever measured cold cranking pressure? Mine is about 210 PSI.

I tried all kinds of fuel additives and my personal opinion is that none has any significant effect. I tried Techron, Outlaw, 104 and Real Lead brands among others. If you really want to improve your gasoline a mixture of 50 percent 110 octane race gas with 50 percent super unleaded works wonders. I can run another 5 degrees initial .

Also, don't worry too much about the actual number of degrees. Try adjusting the timing until the ping is gone for the fuel being used. That's all that really matters.

Royce Peterson
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 '67 Shelby 428 "pings" under load...need help -- Steve Boulay, 10/01/2001
 RE: '67 Shelby 428 "pings" under load...need help -- Morgan, 10/01/2001
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 You need vacuum advance. -- Royce Peterson, 10/01/2001
 RE: You need vacuum advance. -- Steve Boulay, 10/01/2001
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 RE: You need vacuum advance. -- Steve Boulay, 10/01/2001
RE: You need vacuum advance. -- Royce Peterson, 10/01/2001
 RE: You need vacuum advance. -- Royce Peterson, 10/01/2001
 RE: '67 Shelby 428 "pings" under load...need help -- Mel Clark, 10/02/2001
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