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View Full Version : Which Spark Plugs? 302 w/SC



Slick_89_Hatch
08-18-2014, 04:10 PM
Hey guys, Looking at changing my plugs as it's been a couple years.
It's 93 Motor with I believe older SVO Alum heads, Cobra Intake V1 making max 8lbs boost. Also running an MSD 6AL.
Right now im running a Motorcraft plug....honestly im not sure which ones they are, id have to pull one out.
Just wondering what recommendations you guys have from your own experience? Make and Model # please :)

ZR
08-18-2014, 04:20 PM
My notes show AGSF-32C as being the stock plug, drop back to 22C for your application. Would run them at 32max, starting at 28 n adjusting larger if you experience idle issues.
Suggest removing one of what you have in there now to confirm.

Slick_89_Hatch
08-18-2014, 04:27 PM
Will that be ok with the Alum heads? I might check with Paul at PSP and see what he says as well.

Slick_89_Hatch
08-18-2014, 04:36 PM
He mentions an AGSP32C because of the alum heads, but just wondering if those are cold enough? And gapped at .035?

ZR
08-18-2014, 05:03 PM
I'm suggesting the AGSF-22C.
Best to remove one of the current plugs to be sure as I think Ford used different plugs in the very early alum heads, can't recall for sure.

HyperGT
08-18-2014, 06:06 PM
i used autolite 24...10-12lb of boost

Big Nick
08-18-2014, 09:58 PM
Autolite 3924 it has a gasket base instead of a taper design for use with aluminum heads

Silver LX
08-19-2014, 12:45 AM
agsp32c is all you need and .35 at your boost level is perfect too. .32 is the tightest I would go- but not for your boost level. Im making 17 psi and have mine a .35 with no blowout making 690 at the tire. idles nicer with a wider gap on my car i find.

Slick_89_Hatch
08-19-2014, 01:41 PM
So they are the AGSF22C which happens to be what Rick recommended. They were gapped around .035 to I brought them down to 0.030.
I did notice though that the pass side plugs all looked a touch lean, while the drivers side plugs looks fine.....