spark plug part #'s

[Blue88Coupe]

is there a cross reference for motorcraft spark plugs? I need this: AWSF32C but all of the websites for motorcraft say their part numbers look like this: Part Number: 12405 (SP-413).

I've searched google for a cross reference and didnt come up with anything

[LS1Goat]

Go to Napa. Find a competent counter man. And tell him you need a damn motorcraft plug.

AWSF-32C / stock heat range - copper plug
AWSF-22C / 1 Heat range colder - copper plug
AWSF-12C / 2 Heat range cooler - copper plug

[greenbullitt]

that sp413 will work. the awsf32c is no longer, that is an acceptable replacement

AGSF32C Is the copper replacement, which is a sp447

agsf22c is a sp505

[jhelmer]

Awsf32c changes to a agsf32c

[2cammer97]

AGSF32C Is the copper replacement, which is a SP-447

FWIW, this is what i'm using with my GT40 heads.

Marcus

[Blue88Coupe]

FWIW, this is what i'm using with my GT40 heads.

Marcus

are yours gt40 or p?

I went with the autolite 3923's. They had autolite 3922's but only 5.

[greenbullitt]

are yours gt40 or p?

I went with the autolite 3923's. They had autolite 3922's but only 5.

his are 40s

[Blue88Coupe]

his are 40s

I've got one concern with the 40p's and flipped bbk headers. The #2 cylinder plug wire is about 1/4" away from the header tube. I dont know if this is going to be close enough to affect it or not. I havent checked the length of the new spark plugs vs whats in it now yet either. I dont even remember what plugs are in it, they came out of some gt40 heads that I pulled from the junk yard a few weeks ago.

[2cammer97]

are yours gt40 or p?

I went with the autolite 3923's. They had autolite 3922's but only 5.

GT40's, but they take the same plug. I think the Autolite 3923 is for E7 heads. That's what i've used in the past for stock heads. I think you want Autolite 764. I believe the length or depth of the plug is different than the 3923 for E7 heads.

Marcus

[Blue88Coupe]

GT40's, but they take the same plug. I think the Autolite 3923 is for E7 heads. That's what i've used in the past for stock heads. I think you want Autolite 764. I believe the length or depth of the plug is different than the 3923 for E7 heads.

Marcus

E7's take a autolite 25

the 764 is stock for a gt40 or gt40p

[greenbullitt]

E7's take a autolite 25

the 764 is stock for a gt40 or gt40p

correct 24-26 for e7

[2cammer97]

correct 24-26 for e7

Isn't the 3923 the same as 24-26 but one heat range cooler? I think the depth of the plug is different for it compared to the 764 or the SP-447 for the GT40/P heads.

[Blue88Coupe]

Isn't the 3923 the same as 24-26 but one heat range cooler? I think the depth of the plug is different for it compared to the 764 or the SP-447 for the GT40/P heads.

Could be right, I couldnt get the 3923's to start in my gt40p heads. I tried two different cylinders with two different plugs, nothing wrong with the cylinder threads and nothing wrong with the plug threads. the threads on the two different plugs line up but I think the 3923's are slightly larger.

What's in them is a motorcraft agsf 32fm

[Blue88Coupe]

Autolite 103's crossrefernced from sp505. Autozone had them.

Heres a pic of the gt40p header issue. The boot doesnt touch but its really close. Maybe some new headers are in order. Gotta pull the header to change the plugs. No checking them at the track for this hoopty setup.

[greenbullitt]

Isn't the 3923 the same as 24-26 but one heat range cooler? I think the depth of the plug is different for it compared to the 764 or the SP-447 for the GT40/P heads.

its been a long time, but i didnt think so...i thought they were 3/4" reach

24-26 are definitely 5/8 reach