I honestly didnt know that and a BIG help, Ya think the Parts stores would know that..And Mr Goodwretch didnt know it either. I was told by my Dealership they didnt have copper plugs for the N*. So can ya give me the AC Delco Racing # you use, I dont want to make a debate about it but I've found keeping with the OEM manufacturer regardless of which seems to work best. The boost is probably about the same for v8nitrous-v6 */C. Zex said just one range colder up to 150 Hp shot. and a shorter(?) nose if possible.

TR-55'* are one range colder, and TR-6 NGK'* are 2 ranges colder

I run TR55 in winter, TR6 in summer. TR6'* are just a bit too cold for winter use for me, and foul after a couple months.

Thanks guys, as I mention the plugs on rear side are a bitch and drive most of the time un-nitroused(only cause I cant afford to hammer down all the ) so TR55 it is.

Looking into a progressive wet plate though, and 90Lb bottle(alot cheaper to fill) (and I could fill my own 10Lb bottle for track) but thats way in the future, have a lots of unfinished mods on my table

So much I want and so little trunk space. Wheelchair'* gonna end up strapped to roof

John? What'* your stock gap? If it'* .060", Gap the TR55'* to .055".

Yes it'* .060 and zex said go smaller on the gap, wasnt sure how much though. Does the TR55 have a shorter profile?

When I went to gap my TR55'* they were pregapped at .55 already.

Same happend to me. I didn't bring it up earlier because I thought it was a fluke

If he is injecting nitrous he is going to have to close the gap more then that. If he doesn't he is going to be blowing out plugs left and right.

Or keep the gap and go with a hotter ignition. Nitrous isn't my realm. How much smaller should he go?