View Full Version : which spark plugs and gap

01-18-2004, 06:05 PM
Hey guys sorry about the stupid question but I have heard that you can't use plugs that aren't platinum? When I tuned my car up I used autolite copper plugs is this ok? Also what gap should I use? I used 54

01-18-2004, 10:15 PM
Autolite 764 (copper) gapped at .054 is perfect for a Naturally Aspirated setup.

Platinum plugs are better for longevity (of the plug) only, while copper conducts better. Copper plugs are also WAY cheaper than platinum plugs :)

01-19-2004, 02:49 PM
What do you think of the Autolites? I was thinking about just putting the stock plugs back in. I have heard a lot of good things about the iridium plugs, but it sounds like overkill for a non-supercharged application. Did you have the stock plugs before the change? Where in Nebraska are you?

01-19-2004, 02:58 PM
They run great but for some reason it seems more hesitant at 7k rpms.

I am in kearney.

EDIT: It had ford platinum plugs before. I would recommend them next time.

01-19-2004, 03:28 PM
Thanks for the info. I will probably just stick with the stock replacement. I am in Omaha.

01-19-2004, 09:34 PM
Why in the world would you want to stick with an expensive stock replacement plug? It does not make power, conducts current worse than a good copper plug and is more expensive than a good copper plug.

Autolite 764 copper plugs, gap at .054 if you are naturally aspirated or .035 if you have boost/nitrous.

Autolite 764 copper plugs - 99 cents each at Walmart or most car-parts stores.

Remember....plugs do NOT make power, your engine does. Wires don't, plugs don't coil-packs don't....the engine does. Don't waste money on expensive "ignition" items if you don't need them (stronger coil-packs, iridium plugs, "live" wires, etc...).

01-21-2004, 02:18 AM
Yea they work fine for me. I foudn out my high rpm hesistation was due to bad gas. I put in 91 and it ran great.