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Old 03-31-2010, 12:30 PM   #1
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>>best sparkplugs?<<?

planning to do a tune up on my 65 mustang 289cid and only performance parts are mild cam and electronic dist and ignition box.

should i go with
ngk plugs
motorcraft plugs
platinum
iridium

thanks
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Old 03-31-2010, 12:52 PM   #2
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>>best sparkplugs?<<?

Go with the standard heat range Motorcraft plugs and I believe the gap is @ .045" to .048", anything else is really a waste of money. Anyone that starts babbling about their "magic" spark plug doesn&#039;t know what they are talking about. Silly claims about "new and improved" electrode configurations are a testament to peoples gullibility. There is absolutely no independent track or dyno data to back up these ridiculous claims. In fact, the actual data disproves the "magic" plug ad campaigns. NO PLUG can increase horsepower or performance versus a fresh set of "standard" plugs...
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Old 03-31-2010, 01:31 PM   #3
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>>best sparkplugs?<<?

NGK plugs are very easy to read and they make a good quality performance plug..

Motorcraft (and autolite) make a very good plug as well. I would not hesitate to use either, but I would personally go with the NGK&#039;s if I had more performance mods planned.

Platinum and Iridium primarily give longevity over conventional copper, however the copper plugs transfer more spark energy. Save the platinums for the boring daily driver fuel injected car and run the coppers on the car you&#039;ll be wrenching on regularly...its part of the fun
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Old 03-31-2010, 02:29 PM   #4
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>>best sparkplugs?<<?

Go with platinum plugs for this application.

Iriduim plugs woulf be over-kill. Any increase in performance would be very marginal over platinum plugs.

Motorcraft plugs seem to work best in a Ford motor.
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Old 03-31-2010, 03:04 PM   #5
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>>best sparkplugs?<<?

I had that same car.... I miss it. I used Bosch Platinum+4&#039;s in mine and got a very noticeable HP increase. Their more $, but worth it!
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Old 03-31-2010, 03:22 PM   #6
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>>best sparkplugs?<<?

Motorcraft or Autolite (same plug) coppers. Put anything else in it and you will have anywhere from sub-par performance to a horrible idle.
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Old 03-31-2010, 04:05 PM   #7
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>>best sparkplugs?<<?

I personally like the Bosch Platinum

But motorcraft, might be your best bet with your car.
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Old 03-31-2010, 04:33 PM   #8
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>>best sparkplugs?<<?

I would use Motorcraft Plugs for sure Bosch and NGK are more for imports than domestic.
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Old 03-31-2010, 04:55 PM   #9
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>>best sparkplugs?<<?

Autolite.
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