Whats the best Plug for a 85 IROC that fairly stock exept that Accel HEI coil, 8mm wires. Cylnder 2 was bad oil rings and keeps fowlin that plug. I got those BOSH platnum 4s in right now But I dont really like them cuz before I went platnum I never got fowled plugs "not a one delco ever let me down like that BOSH in cylnder 2. I was thinkin split fire what do you think.

 

ngk UR4'S i like em

 

Sure, get a split fire if you want to throw money away.

Get some regular AC Delco plugs, they work just as well as anything else.

 

Everyone I know runs the delco plugs. Best price and has never caused a problem.

 

Bosch +4's are junk... Pick ac delco, autolite, ngk, champion...

 

NGKs in all my performance vehicles...

 

I'm happy with my AC Delco rapid fire plugs.

 

I'm testing the NGK IRIDIUM plugs but at $7 a plug prolly not going to be worth it.