I'm currently have problems with a horrible miss in my 383 (see earlier post dies at 4500). Gonna start at the plugs and work my way back. I started pulling the plugs currently in the engine NGK Ridium Xrsix.
Can someone recommend another plug to me. something alittle more common. I just don't like the looks/design of the electrodes on these.

Thanks

iron heads? can't go wrong with J12YC's.

Yes iron heads, I take it J12YC'S are champion?

Autolite 85's. Champions? Wouldn't even consider them.

The best plug we found for the wedge big blocks are the Autolite 85s..

I've run the champions for years, and now I'm trying out a set of NGK XR7's they seem a little smoother, but that's purely subjective. I beat the jeepers out of the last set of champions , broke the enging in on them, then a cam swap, then over a thousand street miles and they were worn, but not fouled. I'd run either