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Discussion Starter · #1 ·
HEy whats up?

I was wondering what brand of spark plugs you would recommend for a '91 LX?

I've been told about Autolite and Motorcraft? Any preference? Others?

Thanks.
 

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iv tried tons of plugs over the years and i like autolite platniums
 

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I have tried all brands as well, motorcraft, bosche, splitfire, NGKS etc

AUTOLITES are better so far. But I do not run the platinums though.
 

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I have tried a few different plugs as well and found the autolites to be the best. I would not recommend the platinum's though. Copper plugs are the way to go. Copper is a substantially better conductor than platinum, the only reason to use platinum is that they last longer than a copper plug.
 

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isnt it #25?
 

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Naturally aspirated go autolite 3924s nitrous go 3922s!
 

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what kind of plugs would you use in a blown app.
 

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I've always used Autolites and have been happy with 'em.

I hear you want to stay away from Champion plugs for a 5.0 because they tend to wear very quickly in that engine for some reason...
 

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1stPny said:
I have tried all brands as well, motorcraft, bosche, splitfire, NGKS etc

AUTOLITES are better so far. But I do not run the platinums though.
Don't use the Bosch paltinums, I tried them and got backfire issues. Swapped them out for Autolites and case closed.
 

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Autolite 24 is one step colder than 25. And 23 is one step colder than 24.

89BlackStang said:
Naturally aspirated go autolite 3924s nitrous go 3922s!
WRONG reach for stock heads.
 

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I've allways used the motorcrafts in my stang and never had issues.I would recomend them.Whatever you do stay away from the splitfires.
 

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Trickflow recommends 3924 on their heads if its N/a and 3923 boosted.
 

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another spark plug thread eh, well I used autolites #24, some people say 25s but mine are 24s gapped to .050, found these to work best out of all plugs I've used so far...
 
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