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What Spark Plugs are you guys using on the Big Block Vanguard engines?
I've been using the Cheap $3 Autolite AP 3923 while working out the correct Jet tuning and with the new Mods.
I've heard that Champion aren't so good.
There is an Autolite Double Platinum APP 3923 at $8 a plug.
Will a better plug make that big of a difference?
I'd like to use an NGK but can't seem to find a direct Part# for the Vanguard.
I've been using the Cheap $3 Autolite AP 3923 while working out the correct Jet tuning and with the new Mods.
I've heard that Champion aren't so good.
There is an Autolite Double Platinum APP 3923 at $8 a plug.
Will a better plug make that big of a difference?
I'd like to use an NGK but can't seem to find a direct Part# for the Vanguard.