11-05-2007, 08:40 AM
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CC Member
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Join Date: May 2001
Location: California,
Ca
Cobra Make, Engine: NAF 289 Slabside Early Comp Car with 289 Webers and all the goodies. Cancelling the efforts of several Priuses
Posts: 6,592
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It could be a small exhaust leak. The 2 Silver springs give a faster advance curve than the Blue ones (you can mix them if you want). 10.5-11.2 is not rich, it is Lean. Get a stethascope and "probe" around, it may be something in your valvetrain too. Without it being under load I doubt it is detonating. Set your initial timing to be around 14-17 with total at 34.
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Rick
As you slide down the Banister of Life, may the splinters never be pointing the wrong way 
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