Ok so when did that beautiful olds come into your life and where is the build thred? Get me up to speed where is the Malibu and the Monte LS? And when is that olds getting (Sledgehammer torque)? If you're going to join the club go all the way!
I have ran AC Delco copper, Rapid Fire platinum, Bosch Platinum, currently in my 260, Autolite Copper and NGK Cooper plugs in the Olds V8. I have never owned a 307 swirl port, only drove cars with them. I really want to try the NGK Iridium plugs but they are a pain in the *ss to find or get from the States. The NGK just idled the smoothest, the Autolite/Ac Delco, especially the older ones are a close second.
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