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06-16-2004, 11:41 PM | #1 |
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Join Date: Sep 2000
Location: rock hill,S.C. 29730
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What spark plugs do ypu prefer
I usually go with Motorcraft or autolite, but I don't know what choices there are. All I know is what the computer at autozone says will fit (like 5 choices). The plugs I see some of you guys running I don't know where to get or what will fit?If you say "hotter than stock" the kid at a-zone might as well be selling matresses cause he don't know what your talking about!
What do you gurus use and what do you gap them to? Thanks Wes
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88 GT: subs,pullies, 1 3/4 longtubes, flowmasters, AFR 165's,T,F #1 cam,Thyphoon intake, 24# inj., 73mm C&L,65mmT.B., 190LPH pump, Eagle sir rods, forged pistons in a newly rebuilt 306. DYNO TUNED TO 300.97 RWHP 337RWTQ |
06-16-2004, 11:43 PM | #2 |
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Join Date: Sep 2002
Location: TEXAS
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autolite for 5.0
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06-17-2004, 02:03 AM | #3 |
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Which autolite? because after I posted I remembered that the autolites I got from A-zone are longer than the motorcrafts and make the wire boots touch the headers on a couple of cylinders
Headers are only 1 1/2 unequals, boots are 45*,should I maybe use straight boots? Stock ones are angled aren't they?
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88 GT: subs,pullies, 1 3/4 longtubes, flowmasters, AFR 165's,T,F #1 cam,Thyphoon intake, 24# inj., 73mm C&L,65mmT.B., 190LPH pump, Eagle sir rods, forged pistons in a newly rebuilt 306. DYNO TUNED TO 300.97 RWHP 337RWTQ |
06-17-2004, 08:24 AM | #4 |
Gimme a Drink!
Join Date: Dec 2002
Location: NYC
Posts: 694
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i just use the autolite for a stock 5.0. i forget the part # offhand, there is a part # serch engine on autolite's web site, check it out. i gap the copper plugs to i believe .054 and never had any probs.
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1990 GT,stock T-5,K&N w/o air silencer,March underdrives,FMS wires,timing@14*,PA Perf 130amp alt,Steeda Tri-Ax Shifter,Steeda adj quadrant/clutch cable/firewall adj,Centerforce II clutch,o/r x-pipe,Magnaflow SS catback,g-load brace, subframes,Bilstein struts/shocks,Autometer gauges, 136k and running strong! |
06-17-2004, 04:11 PM | #5 |
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Location: rock hill,S.C. 29730
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Upon further inspection the only hole that requires a shorter plug is #2 I have to use a bosch super $.99. Any other listed plug for my car is longer than the B. super & the longer plugs puts the boot right on the header tube!!
I guess I'll have to get 1 wire with a straight boot?
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88 GT: subs,pullies, 1 3/4 longtubes, flowmasters, AFR 165's,T,F #1 cam,Thyphoon intake, 24# inj., 73mm C&L,65mmT.B., 190LPH pump, Eagle sir rods, forged pistons in a newly rebuilt 306. DYNO TUNED TO 300.97 RWHP 337RWTQ |
06-17-2004, 07:20 PM | #6 |
I'm slow ...I know.
Join Date: Dec 2003
Location: houston
Posts: 518
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.99 cent autolites
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06-17-2004, 08:56 PM | #7 |
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Join Date: Jun 2003
Location: Wisconsin
Posts: 348
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Autolite is #1 in my book. Motorcraft are a good OE plug too.
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92 Mustang GT, 347 Stroker(Forged Steel Crank/Rods-Balanced, Forged Aluminum Dished Pistons), Trick Flow Track Heat Intake, Trick Flow Twisted Wedge Heads w/ Stage 3 port/polish, 80mm C&L MAF, FMS 30# Inj., BBK AFPR, Trick Flow Stage 2 Cam, Trick Flow 1.6R Rockers, BBK E.L. Headers, Flowmaster Cat-Back, MAC CAI, FMS Pulleys, Griffin Alum. Radiator, MSD Pro-Billet Distributor; AOD, Dynamic 3300 Lockup Converter, B & M Super Cooler, B&M Ratchet Shifter; 3:73 gears. |
06-17-2004, 09:33 PM | #8 |
Domestic Rice really sucks!
Join Date: Apr 2002
Location: KY
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You should not have header clearance issues with 1 1/2 unequal shorties. I have 1 3/4 longtubes in my 351 car and run motorcraft 450's or autolite 24's. Gapped at .054. In my 302 car, I have BBK equal length shorties with 1 5/8 primaries and the same plugs with no clearance issues. The stock wires are angled 45 degrees. What kind of wires do you have?
BTW, I have better luck with the autolites over the motrcrafts. Autolite gets my vote. Bosch supers suck ass. Even Champions are better than them.
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The sig says it all. |
06-18-2004, 01:09 AM | #9 |
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My wires are stock replacement 8mm dbl. silicone from a-zone, 45* boots, they're lifetime warnt. so I change them about twice a year.
I agree that bosch supers suck but they're short so they will work in hole #2, all others have motorcrafts in them right now. I need a good plug thats as short as a bosch super or a straight boot on that wire. Is it possable to put a straight boot one that wire? Can I buy just a boot? Or should I crimp that header tube for clearance, I't wouldn't take much. Thanks guys!!
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88 GT: subs,pullies, 1 3/4 longtubes, flowmasters, AFR 165's,T,F #1 cam,Thyphoon intake, 24# inj., 73mm C&L,65mmT.B., 190LPH pump, Eagle sir rods, forged pistons in a newly rebuilt 306. DYNO TUNED TO 300.97 RWHP 337RWTQ |
06-18-2004, 07:53 AM | #10 |
or '331 LX Eric'
Join Date: Jan 1999
Location: Columbus, Ohio
Posts: 2,142
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Good old Autolite #3924's for my 331 stoker! Just the plain old copper ones.
E
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1991 5.0 LX Coupe - 40,750 miles 331 cu. in. / Tremec 3550 / BFG Drag Radials 12.22 @ 114.31 mph - w/1.89 60' |
06-20-2004, 12:49 AM | #11 |
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Location: rock hill,S.C. 29730
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302 LX Eric,
Do you run stock heads, intake , cam? |
06-20-2004, 12:57 PM | #12 |
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Join Date: May 1999
Location: Georgia
Posts: 3,866
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NGK's are generally regarded as the best plug around for the money and what I would recommend.
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06-20-2004, 02:33 PM | #13 |
Rebel Fleet Commander
Join Date: Oct 2001
Location: Huber Heights, OH
Posts: 1,003
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Autolites here
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1993 Mustang GT, PTK w/ T-64 - My Cardomain Webpage 11.25@123.5 on only 8 psi. 10.84@121 on only 1 headgasket "The Truth is, Your the Weak, and I am the Tyranny of Evil Men!" |
06-23-2004, 07:44 AM | #14 | |
or '331 LX Eric'
Join Date: Jan 1999
Location: Columbus, Ohio
Posts: 2,142
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Quote:
E
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1991 5.0 LX Coupe - 40,750 miles 331 cu. in. / Tremec 3550 / BFG Drag Radials 12.22 @ 114.31 mph - w/1.89 60' |
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06-23-2004, 08:31 AM | #15 |
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Location: Boston
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So out of curiosity, what makes a plug "bad" or "crap"? It's just a rod of copper in a ceramic insulator and some threads to screw it in with. What makes some plugs "better" than others?
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91 GT Carb conversion, holley 600 double pumper, edelbrock performer intake, FMS "C" drop springs, march 1000 underdrive pullies, crane 1.7 roller rockers, GT-40P headers, bassani x pipe, american thunder catback, FMS 4.56's, msd aL6, trunkmount battery, A/C eliminator kit, 3000 stall tci streetfighter, AOD with transgo kit, A+ servo, 300M hardened lockup shaft, kevlar bands and 28,000 gvw trans cooler, 3 core radiator, 300 lbs stripped with a full interior |
06-24-2004, 12:42 AM | #16 |
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Location: Georgia
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I would say quality of construction would be a consideration. I had a whole set of autolights develop a "rattle" to them. When I shook them, they would sound like something was loose internally. I have tried to avoid them since.
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