just pulled plugs out of my car they are ac r45ts

[kevinm]

are the r45 anygood or what should i put back in ? thanks

 

[jayp57]

If they light the mixture and the motor runs well they are fine. Different people have their favorites, I like NGK, but at the end of the day, if you have ignition they are fine.

 

[Chuck Leeper]

That's the hotter AC plug. Most that turn up the boost, use AC 43's, or if the boost is way up, AC42's. I gap them at a tite .032.

 

[jasjamz]

Modded car? Alky? Race fuel? Need more info about the car.

 

[SloGN]

autolite 23's gapped tight 30.

 

[YouLikeThat]

how much boost are you running?
I like the Delco plugs. I can't say they're the best, but I've had good luck with them. I ran the r42ts when I dipped into the 10's and was running 28lbs of boost.

 

[kevinm]

almost all stock ,fuel pump, hotwire kit , adj fuel pr. and cold air kit, tt chip 93 ot. , thanks everyone