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Re: Detonation ping
I bought my 86 with 305/700r4 in 2008 at 105k, it currently has 197k and has always pinged for me. I ran 91 when i lived in MD and that helped but not perfect. Timing is 8degrees because less than that I have no power. Since moving to Florida i started running rec89 which is ethanol free and the pinging has gotten much better.
What is the ethanol content where you are? In MD we had 15 percent. Ethanol is a real problem for older vehicles
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1986 Custom Deluxe 10
1978 Caprice 2 door - sold
1937 Chevrolet 2 door sedan - project
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