Plug gap

Just so you know and not to start an argument. ........
From 1999 to 2023, I had the very same copper plugs in my car. The only reason I replaced them, was cuz I thought/was pretty sure, that the car was sold, and I promised the buyer I'd tune it up.
Those plugs;
> probably had well over 100,000 miles on them.
> had seen three cams, three intakes, four or more carbs, 4 different 4-speeds, and just about every rear gear ratio in the Mopar line up;
> and they were still going to 7200,
> and still firing right up, hot or cold, and every where in between.

I'd tell you my secret, but sureaschit, somebody will tell me how wrong I am; and I'm just so tired of the party-line around here.
Here are some things I can tell you;
1) I don't have a Multi-Strike. and
2) I got my recipe from a Book authored by Smokey Yunich; and Yeah, that's a name drop, but try finding a better one around here.
3) for fuel economy, a wide gap helps, as long as your system has a good HO-coil. and
4) I have a recipe for going over 30mpg, with a 360, using 340 sized cam, headers, a 4bbl, overdrive, and
with a wide plug gap btw,
but every time I tell it, I get called a liar. But see, the thing is, I've already done it, long before I ever even heard of FABO.
So I know it is possible.
HOWEVER,
without a plug gapping tool, you cannot properly gap a standard plug to 080. If you are diligent, you can get to about .040/045, and then the strap will no longer be parallel to the tip of the electrode. If you install it like this, the strap will just spark from the closest point to the tip, which may still be closer to .035....... but good luck getting them all to the same funky gap.
So, if you want to try a wider than 035 gap, either get the gapping tool, or buy pre-widegapped plugs.
BTW
IMO
Forget running an E-core coil on a non CDI ignition system. Oh sure it works, but the turns ratio is all wrong for a regular style Electronic Ignition system. You may get lots of voltage but a weaker amperage. Just get the big yellow Accel Super coil, with it's matching ballast. It's a one-time super investment. Not cheap, but mine has never in 25years let me down.
OOps, my secret is out..........