I am not too knowledgeable about the differences between spark plugs. What spark plugs would i need for a 351, AFR185 heads, and a 9# non-intercooled powerdyne? Oh and what gap? Are there any other contributing factors to which spark plugs to get? Which is the bet? Thanks
351SCNotch
AUTOLITE 3923 will work good, thats the plug i run. there cheap and work well, i pay like $1.92 per 2 pack at WAL MART gap them at .035
I don't now about other plugs but Motorcraft plugs are done in heat ranges starting with ASF42C being the hotter plug ASF32C being the middle range plug and last but not least ASF22C being the coldest..If your running a blower it would never hurt to run a cooler range spark plug anything to help curb detonation is a plus...Just my 2 cents hope this helps you out
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