Originally Posted by BrianT
Not many people are answering the OP question. He didn't ask what brand was your favorite, he asked what plug for his application? I'm going to be needing to pick a plug pretty soon and need to know what specific plug works best in an aluminum headed 408 similar to his build in the original question? I had NGK's in the 340 without any trouble.
Which what I was trying to convey, its not brand that really matters a whole lot, its heat range vs compression and readablility.
A gold/silver finish plug will be easier to read.
