Which Autolite Plug
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Which Autolite Plug
I am running 26's in my 400 4 barrel 1406 w/performer intake. I have all emissions stuff on. It runs perfect on 92 octane & plugs look good. I get a bit of pinging w/87 octane. Should I go to 25's (colder plug) to run 87 or just spend the extra $.30 per gallon & run the 26's? Shouldn't the 25's cool the cylinder & result in less ping?
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t4kne
1987 - 1996 F150 & Larger F-Series Trucks
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Apr 5, 2007 09:15 PM
