So I did a search first so I wouldn't get yelled at and told "just search the forum for a simple question like this" and what I found was conflicting answers.

Just putting plugs in my Gen V 509's, I guess hp500 clones with a bit better cam. Msd box & distributors.

Putting NGK BPR6FS plugs in, What should the gap be? I have seen people answer .030, .035, .040

So.....really, what should it be?????

I run .050 on electronic ignition naturally aspirated with a decent coil. .030 sometimes less on blower motors.

.045-.050 should be good. 33-34* timing.

stock is .045 with msd your soppose to raise it another .005 or more..

.035 to .050 is good,it,s just not that critical in a na engine.

Always had no problems with .045-.050 with a MSD Box, Coil, Wires, etc....