What plugs for my car?

[Brammer]

MY 2002 GTP with 125k on the clock is due for a tune up. I think when I did the LIM job two years ago when I bought it I popped in stock heat range coppers. The car is bone stock aside from a hot air intake, would I be best off with the stock AC Delco 41-101 plugs or should I run copper, and if so, which ones?

[Tonkin2000GT]

Autolite 104's run the best


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[lola]

Autolite 104's run the best


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I'd like some fact checks there.

That's wrong.

Stock~ car.

Stock pulley.

AL605's gapped at .050". Done and done. Shut case, Johnson.

Also: delete your U-Bend at least for christs sake. That's the problem more than anything.

[GTPpower]

E3's!!!!!

[lola]

E3's!!!!!

Bro, have you had Bosch +4's?

Crazy sparks.

[GTPpower]

[Tomtopdog12]

TR55's are good and are 2 heat ranges cooler ( i think), if you want the best and you're gonna start modding i think tr6's are great.