Quote: What part # or heat range NGK would work best in a .030" 440 with Indy EZ heads, FT pistons, compressions at 11.1, Resistor or non-Resistor.
Stock # 7173 for the track (-8) or a BCP7ES for the street. The 8 plug will load up and foul after a while on the street. If the 7 does too, drop down to the BCP6ES... Brian Hafliger IMM Engines
