hey guys, im looking for the # on the 2.4 gm s/c ac delco plugs and what a stage hotter plug would be, gonna buy some later today and see how the car runs, hopefully leans her out a tad. thanks.

ok i found out that the stock s/c plugs ate r42lts

but couldn't running hotter plugs possibly cause a misfire for you?



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- Sold my beloved J in April 2010 -

On a SC car, the last thing you want is hotter plugs, if you want to lean it out, adjust the fuel somehow.


15.3 @ 89.97mph, 14's on the way?

Ya I can't see anything good coming from a hotter index plug.




14.330 @ 96.37mph

well i put in a hotter plug, ngk tr4 and the car is running alot smoother and quicker it seems, the air fuel gauge has leaned out by a bar and a half on the gauge and im loving it. I talked to a few guys who race at the local track with v8's and a guy with a gtp and they all have done this and said it works fine for them. , also at idle the air fuel is reading in the ideal area not the rich area like before.