just trying to find the best spark plug for my o2 cavy
mods that i have so far r intake exhaust 10.5 mm wires
i also run ams oil i have only ran auto lites in the car because
i was told that was the oem replacement THANKS


speed kills save lives drive a honda

the oem replacement is ac delco. part number 41-948. among the best plugs you can buy. stay the hell away from bosch and champion.



JBO Stickers! Get yours today!

we run ngk v power or iridium

I guess it was just a matter of time before I commented on this...

I run E3's in both of my daily-driver LN2'd S-trucks, and have gotten better mileage with both as a result ('94: 24.5, '99: 21.86). Don't ask me why the '99 gets worse mileage than the '94, even though both trucks are built the same (Except for that engine redesign in '98)... It baffles me too!


Go beyond the "bolt-on".

NGK Iridium helped me out for a small but-dyno gain.

I use the recommended AC-Delco plugs. My engine had Autolite copper plugs installed before hand, which was a no-no.