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View Poll Results: Which Brand of spark plug you run?
Autolite 3 2.13%
AC-delco 66 46.81%
Accel 1 0.71%
E3 4 2.84%
Champion 0 0%
Bosch 11 7.80%
Brisk 0 0%
Torque Master 1 0.71%
Motorcraft 0 0%
NGK 45 31.91%
Pulstar 0 0%
Splitfire 1 0.71%
Denso 9 6.38%
Voters: 141. You may not vote on this poll

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Old 02-09-2009   #11
ZR1Vette
 
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Location: Reston, Virginia
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Default Re: Which Brand of Spark plug do you run??

AC Delco here too
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Old 02-09-2009   #12
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Default Re: Which Brand of Spark plug do you run??

AC Delco forever. Kirk
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Old 02-09-2009   #13
zr1don
 
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Default Re: Which Brand of Spark plug do you run??

NGK FR5GP, just installed replaced AC FR2LS's.
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Old 11-05-2010   #14
ZRapid-1
 
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Location: Bethany, CT
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Default Re: Which Brand of Spark plug do you run??

AC Delco 61-402 with a 0.035 inch gap.
Haven't seen any test results which show there is a better choice.

I plan to change them every few years.
This is in contrast to new cars with platinum plugs and their 100,000 miles change interval.
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Old 11-08-2010   #15
FastMatt
 
Join Date: Nov 2010
Location: alamogordo, nm
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Default Re: Which Brand of Spark plug do you run??

What Plug are the NOS guys running? I'm thinking of going to the colder NGK TR6. Anybody use those, does the car suffer N/A when the NOS is off?
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Old 05-16-2012   #16
efnfast
 
Join Date: Nov 2011
Location: Dunbarton NH
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Default Re: Which Brand of Spark plug do you run??

Off the top of my head, NGK, one temp range colder, iridium tipped, gapped at 50, as instructed by Marc.
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Old 07-17-2012   #17
scottfab
 
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Location: Portland Oregon metro area (Washington side)
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Default Re: Which Brand of Spark plug do you run??

AC/Delco (dbl platinum) and still look great after 10yrs.
I pull one every oil change to take a peak.
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Old 07-18-2012   #18
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Default Re: Which Brand of Spark plug do you run??

Can't believe that no one is running the Accel Silver Tip, bargain priced at $72 EACH!
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Old 07-18-2012   #19
John Boothby
 
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Default Re: Which Brand of Spark plug do you run??

AC Delco Platinum 41-800
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Old 07-18-2012   #20
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Default Re: Which Brand of Spark plug do you run??

Quote:
Originally Posted by John Boothby View Post
AC Delco Platinum 41-800
That's the one I'm going to try in mine John
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