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'67 Shelby 428 "pings" under load...need help By Steve Boulay - 10/01/2001 10:09:33 AM; IP 193.243.161.102 I've tried several timing/tuning senarios. I've eliminated all vacuum advance (I'm not running original centrifugal only distributor). Set centrifugal to 20 deg. of crank rotation, initial as low as 4deg. for a 24 degree total that's all in by 2500 rpm. I still get a know a part throttle load and at full throttle. My question is, ...... do I have the centrifugal curve comming in too fast? I can't seems to get the ping to go away completely w/o doses of LS130. I'd prefer not to use additives...... Combination suggestion, timing curve insights, overall ignition solutions/suggestions will be appreciated.... Thanx, in advance Steve Boulay

This thread, so far...

Skip Navigation Links. '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  You need vacuum advance. -- Royce Peterson, 10/01/2001  RE: You need vacuum advance. -- Steve Boulay, 10/01/2001  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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