anyone got a list of various plugs that are TWO steps COLDER than the stock champions?
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??