My A-Headed 605 works fine with .045 plug gaps.
I use the same gap (and Accel #762 plugs) in my Blue Thunder 514.
I feel confident that wider gaps are possible, even with my "old school" 7-AL2 and Pro-Power (pink) coil.
I just seem to be stuck on .045
It works for me.
I've always used a .035 with the AR3911's, I got in a hurry this weekend and threw um in without gapping and it ran fine, i think they are like .025 out of the box.
So what would I run this plug at? I'm going to start with the AR-3933 per David Cole's recommendation with my Alky setup & BT heads. I have a 7AL-3 by the way.
not to butt in but but what plugs do you guys run in your c- headed motors? thanks eric
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