Sparkplugs for GT40P Heads

saleen243 · 09-18-2003, 03:33 PM

What sparkplugs are used with the GT40P Heads..... I am putting some GT40P Heads on my 91 coupe....

QuantumMotorsports · 09-18-2003, 11:13 PM

Ford Motorcraft AWSF-32C.

Jeff Chambers · 09-19-2003, 06:17 AM

Autolite 103 or 104, depending on the heat range you like. I've also run Autolite AR474 for a short-tip, side electrode plug if you've got plug to piston clearance issues like I did. These are two heat ranges colder than a 103 though so they're best for a high compression race engine.

fiveohpatrol · 09-19-2003, 10:16 PM

Autolite 104 is what I run in mine. Can't beat the price, or the fact that you can pick them up at walmart.

I'll be putting 103's in it when I grow the balls to put the nitrous back on it.

srv1 · 09-19-2003, 10:34 PM

or go here:heat range

James

09-18-2003, 03:33 PM	#1
saleen243 Registered Member Join Date: Aug 2001 Location: VAFB, CA Posts: 47	Sparkplugs for GT40P Heads What sparkplugs are used with the GT40P Heads..... I am putting some GT40P Heads on my 91 coupe.... __________________ 2002 F150 SuperCrew 1990 5.0 LX Coupe 1989 Saleen Convertible #243 1965 Fastback - 331 Stroker/T-5 swap

09-18-2003, 11:13 PM	#2
QuantumMotorsports Registered Member Join Date: Jul 2000 Location: Norman, Oklahoma, USA Posts: 597	Ford Motorcraft AWSF-32C. __________________ Michael Black QuantumMotorsports Norman, OK 1984 LX Hatch 306 w/ TRW forged flat toppers, Comp Cams Magnum 292H, GT40P heads w/ 3 angle valve job, .550 lift springs, Angus Racing Roller Rockers, Weiand Stealth Intake, Holley 4150 650cfm carb, MAC 1 5/8 Long Tubes, Single Chamber Flowmasters, 91' T5 w/ Pro 5.0 shifter, Turbo Coupe 8.8 Rear w/ 3.55 gears, QA1 Motorsports tubular K member, no interior except steering wheel and seat. Coming soon: 6 or 8 point cage, Fuel Cell, Weld Draglites

09-19-2003, 06:17 AM	#3
Jeff Chambers Moderator Join Date: Aug 2000 Location: Milan, OH Posts: 2,699	Autolite 103 or 104, depending on the heat range you like. I've also run Autolite AR474 for a short-tip, side electrode plug if you've got plug to piston clearance issues like I did. These are two heat ranges colder than a 103 though so they're best for a high compression race engine. __________________ Jeff Chambers 1990 Mustang GT 10.032 Seconds / 137.5 MPH 14-time Street Warrior World Record Setter CRT Performance 2001 Tropic Green Mustang GT - 12.181 / 113.2 MPH 2002 Ford F-250 Crew Cab 7.3l Power Stroke - 17.41@77.2 "There's nothing boring about a small block automatic shifting gears at 9400 rpm!"

09-19-2003, 10:16 PM	#4
fiveohpatrol I'd rather be basketweaving Join Date: Feb 2000 Location: Indianapolis Posts: 2,551	Autolite 104 is what I run in mine. Can't beat the price, or the fact that you can pick them up at walmart. I'll be putting 103's in it when I grow the balls to put the nitrous back on it. __________________ NMRA O/C 9516 NA pumpgas stickshift 347 10.65@125.6, 6.73@100, 1.41 60ft

09-19-2003, 10:34 PM	#5
srv1 Get down..... Join Date: Apr 2001 Location: Room 103 Posts: 2,095	or go here:heat range James __________________ Cobra brakes are on! Finally..... ------------------------------------------------

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