I know it's not a real performance mod, but does anyone have experience using these plugs, GM AC Delco 41-985, or GM Performance wires, part number 12495519. What do you use and do you like it? Thanks!
Duct tape and bailer twine!Oh yeah... and they couldn't stop the number 1 plug wire from falling off either....
They come pre-gapped at .060, I wouldn't mess with trying to gap them as the electrode is so fine it can easily be damaged. If you get the TR5IX it comes pregapped at .040.I have the TR55IX part # 7164, Does that mean anything to you or anyone else?
How do you know what the gapping is ? I cant find it anywhere on the box