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bradh · 10-14-2010, 10:01 PM

If you get the total timing set and it still knocks try a cooler plug. If I'm not mistaken that's a .375 reach gasket type plug on 283 heads. A Champion RJ12YC should be in the ballpark.

10-14-2010, 10:01 PM	#22
bradh Registered User Join Date: Jan 2007 Location: Nebraska Posts: 84	Re: High compression engine and pinging If you get the total timing set and it still knocks try a cooler plug. If I'm not mistaken that's a .375 reach gasket type plug on 283 heads. A Champion RJ12YC should be in the ballpark.