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Re: how do i stop pinging?
Crm. 1972 cheyenne
chevrolet red and white
357ci, 9.0 comp, pro torker sr heads,
performer rpm q-jet, .454/.454 268H comp
Quadrajet carb, flowtech headers, 2.25 40 series
HEI, curve kit,TH 350, 3.07 gear
If this is the truck in question I see it has an HEI advance curve kit installed. I don't know how yours is set up but it may have too fast of an advance rate ( looser springs) for the compression and 87 octane gas. If using the lighter springs you can swap them for the next stiffer springs to delay the advance just a little bit. Or run higher octane gas or add a can of octane booster to each tank of gas.
Also what about coolant temps? If running a 195 stat back it down to 180 or so to also help the problem.
One other thing. An adjustable vacumn advance will help you to fine tune the curve too.
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Boog
69 Chevy stepside, 358/T350, 4.11 posi, 4.5/4 drop, rallys, poboy driver
primer is finer
91 Chevy sportside, Tahoe, Yukon & GMC Crewcab All GM..'nuff said.
I stand for the flag and kneel at the cross
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