what spark plugs for alky/ 22-24 PSI and what gap?

[Evans Ward]

Looking for opinions on spark plug preference for alky users running at higher boost levels (22-24 PSI). Also, what gap do you like? I know many of you run even higher boost levels too. For the AC-Delcos and Autolites, which model/ heat range is recommended?

 

[WSLN 6]

I run a AC Delco 42ts with a tight .032 gap. Never had an ignition problem all the way up to 30psi.

 

[87NAT]

I have used Autolite 23's at .031 @ 25 psi.

I am currently using NGK UR5's at .032 @ 23 psi.

Both work well. Just stay away from the platinum plugs.Do a search on plugs...you will get a zillion threads on it.

 

[Royal-T-Ltd]

NGK UR5s [pn 2771] - a tight .032