BigCarrot said:NGK BKR7E is what you need with a big shot of nitrous. They're shorter and the electrode is shorter.
3923 are colder. 1 step colder than the 3923 is 3922.V10 MOJO said:John, depnds on where im at, being that the heads/cam is technically considered one heat range colder i stick with the coldr plugs.
ive tried NGK R5617A-7 and they worked great for nitrous but fouled real fast otherwise.
what autolites are colder the 3923 or 3924??
I believe it's two, but may be three. That's what NGK told me to use and they work really well!V10 MOJO said:big carrot; but how cold is it vs the stock champion plug??
You'll be fine! Trust me on this one. I know my nitrous!V10 MOJO said:ill try them, hope theyre at least two otherwsie everyone is gonna see my engine turn into a party favor