What plugs are you turbo 5.0 guys running? - Ford Mustang Forums : Corral.net Mustang Forum
 
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post #1 of 19 Old 02-18-2008, 11:03 PM Thread Starter
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Question What plugs are you turbo 5.0 guys running?

What plugs & what gap are you turbo 5.0 guys running?


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post #2 of 19 Old 02-18-2008, 11:30 PM
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Autolite best for the money (one step colder) i think 3923 not sure on the numbers

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post #3 of 19 Old 02-19-2008, 07:45 PM
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I think they are just called A24s (a25 is stock, I think). I have mine gapped at .030 running 8lbs. I did have them at .035 but was having blow out issues.

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post #4 of 19 Old 02-19-2008, 08:30 PM
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349cid, T80mm turbo, bennett stg 3 high-port heads.
NGK-5671A-10 plugs, 21lbs boost and 830rwhp. Autolights would have never worked.

It all depends on what your running, boost, HP, timing,etc
My 308cid, AFR185 heads, Vortech S-trim w/ 13lbs boost made 551rwhp and i ran Autolight 3923 with goodluck.

Erik

Last edited by r6rider; 02-19-2008 at 08:32 PM.
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post #5 of 19 Old 02-20-2008, 08:37 AM
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I was running autoilte 3923's but was having some fouling and spark blowout issues…which may have been directly related. I switched over to ngk 4554's (recessed tip) and it's been running MUCH better ever since.

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post #6 of 19 Old 02-21-2008, 08:57 AM
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I use autoilte race plug AR-3923 gap at .025. so far doing good for last two season.

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post #7 of 19 Old 02-21-2008, 10:29 AM
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Quote:
Originally Posted by millhouse View Post
I was running autoilte 3923's but was having some fouling and spark blowout issues…which may have been directly related. I switched over to ngk 4554's (recessed tip) and it's been running MUCH better ever since.
I run the NGK 4554's and they have been a great plu so far. I gap them at .030

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post #8 of 19 Old 02-21-2008, 12:23 PM
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NGK Iridiums

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Incon 800TTi, AFR heads, Holley intake, stock cam
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post #9 of 19 Old 02-23-2008, 07:00 PM
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afr205 head ngk5671a-10. i should be fine with a "9" but i like the extra safety.they foul pretty easy though
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post #10 of 19 Old 02-24-2008, 05:01 PM
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One owner 50,000 miles Dart 363, oliver rods, Karl's East Coast custom Y2k 82mm turbonetics, TW stage 2 Fox Lake, PMS, Victor intake, PMAS custom pipe for 85 lb/hr inj. T56 Magnum 6 speed w/Spec3+,756 rwhp 746 tq (pump gas, 14psi, 20*) 840 rwhp 848 tq (race gas, 16.5psi, 20*) SOLD
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post #11 of 19 Old 02-25-2008, 10:32 AM
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im currently running autolite 3923's gapped at .028

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post #12 of 19 Old 03-06-2008, 07:49 PM
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would the autolite 3923's be good for my app
dss 306
tfs heads,intake,cam stage one
42lb injectors
b&g setup with 7-8lbs of boost
i am currently adding the turbo kit so i need to know what is a good plug to go with

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post #13 of 19 Old 03-07-2008, 01:41 PM
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3923's at .025 for me.
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post #14 of 19 Old 03-07-2008, 02:03 PM
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thanks guys
i went to summit but they dont show them for fords. You can look it up by that number but it doesnt show it for the mustang. I guess i will just call them up

thanks again

Paul

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post #15 of 19 Old 03-07-2008, 02:43 PM
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Depends on what head you use as well. Diff heads may require diff plugs.
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post #16 of 19 Old 03-07-2008, 02:52 PM
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well i have the complete TFS street heat package
heads,intake and stage one cam

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post #17 of 19 Old 03-07-2008, 09:05 PM
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Quote:
Originally Posted by r6rider View Post
349cid, T80mm turbo, bennett stg 3 high-port heads.
NGK-5671A-10 plugs, 21lbs boost and 830rwhp. Autolights would have never worked.

It all depends on what your running, boost, HP, timing,etc
My 308cid, AFR185 heads, Vortech S-trim w/ 13lbs boost made 551rwhp and i ran Autolight 3923 with goodluck.

Erik
"Autolites would have never worked" I bet that AR3935-AR3930 would have worked just fine, that's the cross for the ngk-5671a.

One owner 50,000 miles Dart 363, oliver rods, Karl's East Coast custom Y2k 82mm turbonetics, TW stage 2 Fox Lake, PMS, Victor intake, PMAS custom pipe for 85 lb/hr inj. T56 Magnum 6 speed w/Spec3+,756 rwhp 746 tq (pump gas, 14psi, 20*) 840 rwhp 848 tq (race gas, 16.5psi, 20*) SOLD
-2014GT/CS
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post #18 of 19 Old 03-08-2008, 09:51 AM
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O and I use autlites 3923.. work great. Used with trick flow twisted wedge heads. I used autolite 24 with cast stock heads.
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post #19 of 19 Old 03-08-2008, 01:31 PM
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Quote:
Originally Posted by danny carvalho View Post
"Autolites would have never worked" I bet that AR3935-AR3930 would have worked just fine, that's the cross for the ngk-5671a.
Sorry I presented myself total wrong. Yes Autolites will work...will i use them in my application..NO
NGK all the way..LOL
Erik
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