Very good post! I learned alot. That'* one reason I love this site. Pontiacs rule! I'm thinking about in the not too far future and this helped me to understand that I need a plug that will withstand the heat and burn right.

Foghorn, awesome stuff. Thanks for adding that. We have the makings of an all-time classic topic here. Might just post a link to this thread in Techinfo, rather than copy and paste. I'd like to see this discussion progress further first.

I'm still mulling over my TR6 gap. Plugs will be here Wednesday I think, along with new Taylors. I'll let the WCBF crew experience how easy the Series 1 plug changes are

Sometime between now and then, I'll decide on a gap, but for now it'* probably in the .045-.050 range.

Well i just got a new engine/tranny put in my car and i ordered new plugs to go with it, the new plugs are the TR6'* and i dont know what to gap them to based on my mods and this topic, what would your suggestions be?

Jag, your mods are very similar to mine. I have a bit more extreme setup, but not by much. Mostly in the more extreme programming of the JET compared to the Hypertech you run.

I'm right on the border of the TR55 or TR6. If I were you, I'd run the TR55 at .055", and pull them in 3 months and again at 6 months. If they look ok, that'* your magic. If they don't look ok, and seem to be fouling or eroding, step down to the TR6. Gap for those is a question for me right now. I'll probably run them at .045, but I had 2 sets delivered today, so I may play with a couple different combinations. It only takes me 30 minutes to change them, so it'* no great effort.

Keep us posted here on anything you learn or decide to do.

Replacement TR6'* came today, UPS. Gapping at .045" this time around. Install tomorrow night at the KOA with Pdad hopefully (assuming delivery of replacement Taylor wires come in as scheduled tomorrow).

I'd say do some Gtech runs, and see if it notices anything. I'm sure Pdad would love to have some Gtech fun too!

Anyways, i hope the smaller gap doesn't take power levels down.... I'll be waiting anxiously for results.

Well the thing is i didnt know about this post so i just ordered the TR6'* anyways, i mean i guess i can get some TR55'* but right now the TR6 is whats coming, would i be safe gaping at .045 also?

Anyone?

Just wait for willwren'* results.

He'* on vacation (West Coast B-fest.)