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Re: Gonna give NGK plugs a shot. [Re: Thumperdart] #1400634
03/12/13 12:59 AM 03/12/13 12:59 AM
Joined: Oct 2003
Posts: 1,561
yarnell,az
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mopacltd Offline
pro stock
mopacltd  Offline
pro stock
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Joined: Oct 2003
Posts: 1,561
yarnell,az
Chris, my 8 heat range NGK's are 4554.
Re: Gonna give NGK plugs a shot. [Re: mopacltd] #1400635
03/12/13 02:52 AM 03/12/13 02:52 AM
Joined: Dec 2006
Posts: 3,667
Arizona
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Chris'sBarracuda Offline
master
Chris'sBarracuda  Offline
master
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Joined: Dec 2006
Posts: 3,667
Arizona
Quote:

Chris, my 8 heat range NGK's are 4554.




You are CORRECT.. I fixed it..




Chris..

Re: Gonna give NGK plugs a shot. [Re: 383man] #1400636
03/12/13 05:59 AM 03/12/13 05:59 AM
Joined: Oct 2006
Posts: 427
Sweden
Mopar Guy Offline
mopar
Mopar Guy  Offline
mopar

Joined: Oct 2006
Posts: 427
Sweden
Ron im no expert of any kind but the R5671A-7 are race plugs and i tryed them on my 505 stroker ! Itīs a street engine and i gues i rev it to about 6000rpm and those plugs dident burn clean and when i just tryed the Champion RC12YC the engine realy replyed to it and they are mutch cleaner.

I run a MP ignition elecronic and RPM heads to a 6-Pack and about 11,5-1 and a 4 speed trans from Passon.

If you like i can post pic of my plugs !? When you compare that race plug to a std you can see that the electrode is more coverd by the plug on the NGK race plug you are trying.
Re: Gonna give NGK plugs a shot. [Re: superwrench] #1400637
03/12/13 08:16 AM 03/12/13 08:16 AM
Joined: Jan 2003
Posts: 21,076
Niles , Ohio
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therocks Offline
oh wait.but hey.lets see.oh yeah.
therocks  Offline
oh wait.but hey.lets see.oh yeah.
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Joined: Jan 2003
Posts: 21,076
Niles , Ohio
Ron Ive run Autolites since the 60s.We userd NGKs at work and they always seemed to work.Put a set in my 440 with 12.5 domes and Dominator.The Autolites seemed to miss after a while.NGKs have been in for 3 years at least.Still runs great and its street driven for the most.I pull them and they still look good.Rocky

Chrysler Firepower
Re: Gonna give NGK plugs a shot. [Re: therocks] #1400638
03/12/13 05:54 PM 03/12/13 05:54 PM
Joined: Jan 2003
Posts: 27,421
Balt. Md
3
383man Offline OP
Too Many Posts
383man  Offline OP
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Joined: Jan 2003
Posts: 27,421
Balt. Md
Thanks for the replies. I have been told the 7's are hotter the the 8's , 9's and on up with NGK. In other words the lower # the hotter plug with NGK's ? Ron
Re: Gonna give NGK plugs a shot. [Re: 383man] #1400639
03/12/13 06:11 PM 03/12/13 06:11 PM
Joined: Aug 2010
Posts: 40
Washington
S
SuperStock68Dart Offline
member
SuperStock68Dart  Offline
member
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Joined: Aug 2010
Posts: 40
Washington
Quote:

Thanks for the replies. I have been told the 7's are hotter the the 8's , 9's and on up with NGK. In other words the lower # the hotter plug with NGK's ? Ron



That is correct.
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