GT40P spark plugs - not available at Ford?

GeeTeeFiveOh · May 19, 2012

I had been running AWSF-32C plugs for a couple years and I had always gotten them through Ford. I went in today to get some more and they told me they don't carry these anymore after searching for the part number several times. They offered me platinum plugs for the 98 explorer gt40p head, I want copper as that's what works best and is the cheapest. They said motorcraft is not making these anymore.

Where are you guys buying these? I'm going to buy some autolites and give them a go for now but I was happy with the oem plugs

96TANGERINEGT · May 19, 2012

Autolite plugs should work fine that's who makes plugs for motorcraft.

quickstang_1994 · May 19, 2012

+1 for autolites

ttocs · May 19, 2012

I was always told to use autolites - and 10 degrees timing is golden

Venom351R · May 21, 2012

Autolight 3924's, been using those for years with Aluminum Heads and N/A

95opal · May 21, 2012

Venom351R said:
Autolight 3924's, been using those for years with Aluminum Heads and N/A

Trav, 3924s are great for what your using them for, but for P heads not good. You want Autolite copper 104 or 764.

LAFENATU · May 21, 2012

ttocs said:
I was always told to use autolites - and 10 degrees timing is golden

10*?

That is stock timing, turn it up till it starts to ping and then pull it back slightly.

Most Mustangs will run around 14* of timing without detonation.

Venom351R · May 21, 2012

95opal said:
Trav, 3924s are great for what your using them for, but for P heads not good. You want Autolite copper 104 or 764.

I dont know to much about the P heads. Never bothered to replace factory parts with factory parts.

GeeTeeFiveOh · May 21, 2012

Well so it happened nobody had autolite or motorcraft plugs for my application. Canadian tire / part source sells a rebranded "Nascar" which they told me is made by autolite but they did not carry the copper plugs. I ended up having to with champion copper plugs since thats all that was available to me at that moment.

They seem O.K for now, I'll be ordering the recommended plugs for next change or maybe earlier we'll see