Spark Plug List For Mustangs

Casper98GT · May 9th, 2007, 04:38 PM

Credit given to ALLMTR2V on the corral forums.

MOTORCRAFT
AWSF-32C / stock heat range - copper plug
AWSF-22C / 1 Heat range colder - copper plug
AWSFA-12C / 2 Hea range cooler - copper plug
AGSF-32C/ Recommended for FRPP heads(not sure on heat range)

NGK
TR-55/ 3951/ Stock Heat Range
TR-6/ 4177/ 1 Step Colder
BP7EFS (PN - 3526) BR7EF (PN - 3346) two steps
R5724-8 (PN - 7317) two and a half steps
R5724-9 (PN - 7891) three steps
R5724-10 (PN - 7993) four steps

AUTOLITE
764s / Stock
103s / 1 heat range cooler
AR94 / 2 heat range cooler
AR93 / 3 heat range cooler
AR92 / 4 heat range cooler

CHAMPION
YS-59C / -3 or -4 below stock heat range

DENSO
IT16 / stock heat
IT20 / -1 heat range
IT22 / -2 heat range
IT24 / -3 heat range

itschristorres8 · June 17th, 2007, 01:29 PM

im guessing this is for only v8s
cause autolite stocks are 765...
all v6s are just a number up or down i believe

i also hear that u dont really wana use NGK on a mustang to stick with motocraft or autolite

ChrisJ · June 17th, 2007, 04:06 PM

Got the same info from MPH as well...I posted it in the 99-04 section...This is for the V8 Mod Engines...

SWEET2KSTANG · June 18th, 2007, 09:14 AM

i run champion plugs in my car. i had the 304's which is one stage colder and now i run the 344's which are 2 stages colder.

03 R Code · June 18th, 2007, 11:10 AM

I run the NGK plug (TR-6's) and haven't had any problems out of those. I change them after about every 5-6 bottles...Just in cases!

mmustangsrus · July 1st, 2007, 01:22 PM

i run ngk tr6ix`s in my cobra & they are awesome &

they are the "recomened" plug for a supercharged mustang !!!!!!

Stagray · July 22nd, 2007, 04:04 AM

Is it possible to run higher heat stages on a stock motor and not hurt anything?

PonyXpress · August 5th, 2007, 03:44 PM

nobody likes the bosch platinum+4's?

The eaglenator · August 19th, 2007, 04:57 PM

How often should I change my plugs? I've got a 2000 GT V8 4.6 liter. All stock except for a CAI. Thanks

DaNnY · September 3rd, 2007, 09:40 PM

I worked for Autozone a while back, and almost every single Bosch +2 or +4 that we sold, the customer almost always came back with fouled plugs, check engine light on w the car miss-firing. I don't know if the plugs are poorly made or what. -DaNnY-

carnut59 · September 4th, 2007, 12:21 AM

the bosch +2 and +4 just like the spitfires will damage the pistons and cause other problems. i dont know anyone who likes them.

Dennis · September 4th, 2007, 01:53 PM

ok so being a uninformed individual what exactly does getting a cooler plug do for the car ?and what ranges shoudl people run who are stock

Dennis · September 5th, 2007, 03:12 AM

???????? hello anyone home (hears echos)

ModMustang97GT · September 17th, 2007, 06:03 PM

For nitrous and FI cars, the step colder makes them less likely to detonate.

gills99stang · February 8th, 2008, 07:35 PM

So is it better to go cold as possible?

SWEET2KSTANG · February 8th, 2008, 09:32 PM

it wont hurt, but its all about efficientcy. the hotter you can keep a spark, the more efficient, but have to be carefull about detonation too.

gills99stang · February 8th, 2008, 09:33 PM

So how do you determine what's most efficient between keeping it hot and keeping down detonation?

SWEET2KSTANG · February 8th, 2008, 09:36 PM

knowing what exactly is done on the motor, temperatures, fuel, etc. etc. a lot of data logging, pulling plugs, and even checking injectors.

Randy Stinchcomb · November 10th, 2008, 05:37 PM

Originally Posted by Casper98GT

Credit given to ALLMTR2V on the corral forums.

MOTORCRAFT
AWSF-32C / stock heat range - copper plug
AWSF-22C / 1 Heat range colder - copper plug
AWSFA-12C / 2 Hea range cooler - copper plug
AGSF-32C/ Recommended for FRPP heads(not sure on heat range)

Motorcraft sparkplugs have changed part #'s and some are now only aval in a full thread design, new part #'s are as follows......

SP-447 replaces the AWSF-32-C & AGSF-32-C, Full Thread design-stock heat range in a copper core
SP-505 replaces the AWSF-22-C & AGSF-22-C, Full Thread design-1 step down from stock, also copper core
SP-494 replaces the AWSFA-12-C still a 1/2 thread design-2 steps down from stock, copper core

97mustanggt · November 12th, 2008, 02:43 AM

so wats best for 96-98 cobras...wat plug will give it like .8mpg or .8h.p...haha...wat plug is the best for these cars?

May 9th, 2007, 04:38 PM	#1
Casper98GT Hardcore Enthusiast Join Date: Aug 2005 Location: NEW HAMPSHIRE Posts: 2,395 iTrader: 0 reviews	Spark Plug List For Mustangs Credit given to ALLMTR2V on the corral forums. MOTORCRAFT AWSF-32C / stock heat range - copper plug AWSF-22C / 1 Heat range colder - copper plug AWSFA-12C / 2 Hea range cooler - copper plug AGSF-32C/ Recommended for FRPP heads(not sure on heat range) NGK TR-55/ 3951/ Stock Heat Range TR-6/ 4177/ 1 Step Colder BP7EFS (PN - 3526) BR7EF (PN - 3346) two steps R5724-8 (PN - 7317) two and a half steps R5724-9 (PN - 7891) three steps R5724-10 (PN - 7993) four steps AUTOLITE 764s / Stock 103s / 1 heat range cooler AR94 / 2 heat range cooler AR93 / 3 heat range cooler AR92 / 4 heat range cooler CHAMPION YS-59C / -3 or -4 below stock heat range DENSO IT16 / stock heat IT20 / -1 heat range IT22 / -2 heat range IT24 / -3 heat range __________________ 91 LX, 5spd. Ex:Toyota/Ford tech Marine Machinery Technician, Department of Defense.

June 17th, 2007, 01:29 PM	#2
itschristorres8 Banned 00 V6 & 09 GT 13.37@104.4mph--BONE stock GT Join Date: Aug 2006 Location: south florida Posts: 15,859 iTrader: 2 reviews	im guessing this is for only v8s cause autolite stocks are 765... all v6s are just a number up or down i believe i also hear that u dont really wana use NGK on a mustang to stick with motocraft or autolite __________________ [SIGPIC][/SIGPIC] Acmillr loves me

June 17th, 2007, 04:06 PM	#3
ChrisJ RLY SRS Join Date: Aug 2005 Location: Ft. Meade, MD Posts: 36,743 Blog Entries: 4 iTrader: 9 reviews	Got the same info from MPH as well...I posted it in the 99-04 section...This is for the V8 Mod Engines... __________________ 2008 Acura TL Type-S - 2008 EB Ford Expedition - 2002 Boosted GT - Sold Facebook Google+

June 18th, 2007, 09:14 AM	#4
SWEET2KSTANG mm's nitrous mod 2000 mustang gt 11.79@115.83 (old set up) Join Date: Oct 2006 Location: N.W. AR Posts: 12,430 iTrader: 8 reviews	i run champion plugs in my car. i had the 304's which is one stage colder and now i run the 344's which are 2 stages colder. __________________ project warhorse under construction being built by MP2 Performance

June 18th, 2007, 11:10 AM	#5
03 R Code MM Fanatic unstoppable @ speed of light Join Date: Jul 2006 Location: Knees deep in dat ass Posts: 3,103 iTrader: 0 reviews	I run the NGK plug (TR-6's) and haven't had any problems out of those. I change them after about every 5-6 bottles...Just in cases! __________________ Political correctness is a doctrine fostered by a delusional, illogical, liberal minority, and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a turd by the clean end.

July 1st, 2007, 01:22 PM	#6
mmustangsrus Newbie Join Date: Jul 2007 Posts: 2 iTrader: 0 reviews	i run ngk tr6ix`s in my cobra & they are awesome & they are the "recomened" plug for a supercharged mustang !!!!!!

July 22nd, 2007, 04:04 AM	#7
Stagray Regular Join Date: Jul 2007 Location: Hampton, VA Posts: 118 iTrader: 0 reviews	Is it possible to run higher heat stages on a stock motor and not hurt anything?

August 5th, 2007, 03:44 PM	#8
PonyXpress Newbie 2012 Boss 302 Laguna Seca Join Date: Jan 2007 Location: Kuwait Posts: 30 iTrader: 0 reviews	nobody likes the bosch platinum+4's? __________________ What's the point of living if your can't keep up with life in the fast lane?

August 19th, 2007, 04:57 PM	#9
The eaglenator Hardcore Enthusiast Join Date: Sep 2006 Location: Herrin Il Posts: 2,238 iTrader: 0 reviews	How often should I change my plugs? I've got a 2000 GT V8 4.6 liter. All stock except for a CAI. Thanks __________________ Offical MM Zepplineers crew member #4-Commander

September 3rd, 2007, 09:40 PM	#10
DaNnY Newbie Join Date: Sep 2007 Location: Austin, Tx Posts: 9 iTrader: 0 reviews	I worked for Autozone a while back, and almost every single Bosch +2 or +4 that we sold, the customer almost always came back with fouled plugs, check engine light on w the car miss-firing. I don't know if the plugs are poorly made or what. -DaNnY-

September 4th, 2007, 12:21 AM	#11
carnut59 Enthusiast 2001 gt Join Date: Sep 2007 Location: dallas, tx Posts: 772 iTrader: 0 reviews	the bosch +2 and +4 just like the spitfires will damage the pistons and cause other problems. i dont know anyone who likes them.

September 17th, 2007, 06:03 PM	#14
ModMustang97GT Hardcore Enthusiast 1997 Mustang GT Faster than an s4 Join Date: Aug 2007 Location: Seattle, WA Posts: 1,598 iTrader: 0 reviews	For nitrous and FI cars, the step colder makes them less likely to detonate.

February 8th, 2008, 07:35 PM	#15
gills99stang Achieving more N/A power! When this baby hits 88 miles an hour... Join Date: Sep 2006 Location: Virginia Beach, Virginia Posts: 3,154 iTrader: 3 reviews	So is it better to go cold as possible? __________________ Brendan '99 Mustang GT [ 318 rwhp N/A ] - SOLD () '04 F150 XLT SuperCab

February 8th, 2008, 09:32 PM	#16
SWEET2KSTANG mm's nitrous mod 2000 mustang gt 11.79@115.83 (old set up) Join Date: Oct 2006 Location: N.W. AR Posts: 12,430 iTrader: 8 reviews	it wont hurt, but its all about efficientcy. the hotter you can keep a spark, the more efficient, but have to be carefull about detonation too. __________________ project warhorse under construction being built by MP2 Performance

February 8th, 2008, 09:33 PM	#17
gills99stang Achieving more N/A power! When this baby hits 88 miles an hour... Join Date: Sep 2006 Location: Virginia Beach, Virginia Posts: 3,154 iTrader: 3 reviews	So how do you determine what's most efficient between keeping it hot and keeping down detonation? __________________ Brendan '99 Mustang GT [ 318 rwhp N/A ] - SOLD () '04 F150 XLT SuperCab

February 8th, 2008, 09:36 PM	#18
SWEET2KSTANG mm's nitrous mod 2000 mustang gt 11.79@115.83 (old set up) Join Date: Oct 2006 Location: N.W. AR Posts: 12,430 iTrader: 8 reviews	knowing what exactly is done on the motor, temperatures, fuel, etc. etc. a lot of data logging, pulling plugs, and even checking injectors. __________________ project warhorse under construction being built by MP2 Performance

November 12th, 2008, 02:43 AM	#20
97mustanggt Hardcore Enthusiast 97GT & 97Snake & 00L T.B.A Join Date: Aug 2008 Location: Richgrove, Ca Posts: 2,196 iTrader: 0 reviews	so wats best for 96-98 cobras...wat plug will give it like .8mpg or .8h.p...haha...wat plug is the best for these cars?

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