Alright, So I'm putting headers on my car, decided to get new spark plugs while I'm at it..

Ac Delco Professional-Platinum plugs was what the part store replacement was (same from a few stores) Part # 41-905.

I have the plugs and all, but either I can't find the sticker (It's not where it is on any of my other vehicles) or someone peeled it off.

I was just wondering what the spark plug gap should be. After searching, and asking many people I've continued to get mixed answers of .035 and .045, so which should I use? Thanks for the help!

 

your stock ignition can cover a gap from .35-.45 no problem

 

All Data says .035. I agree that .045 is also fine for your HEI ignition.

 

Hmm well if I'm running those plugs, with Moroso Ultra 40, 8.65mm wires, what gap would give me the best results?

 

.035 all day every day dont gap much larger
TPI small hei external coil can handle .045 but it prefers .035 all data is correct... ASE DOC jumped me to the punch again, good job ASEDOC your knowledge is on point everytime.

 

.my sticker on my 1992 says .035

 

I cheat, I'm here at work on a slow day with Mitchell 1 and All Data open in another window. LOL

BTW, as far as my knowledge being on point, could someone tell my boss that? Id like to make more money. LOL. No seriously, I need real money for my next engine build.