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» Northern California Ford Owners     » Automotive   » Tech Talk   » Spark Plug Heat range Help

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Author Topic: Spark Plug Heat range Help
1svtcobra
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Member # 1352

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I need a plug # for 2 heat ranges colder for my 98 cobra. They need to be copper plugs. I prefer NGK. open for any suguestions though.

THANKS!
Posts: 12 | Registered: May 2002  |  :
93PONY
Mr. Valve Events
Member # 60

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TR5's are stock in 5.0's. TR55's in 93 Cobras.
I use TR6's in w/my TTs & it works great. Next step up would be TR7's, etc. Whatever the factory replacement plug is, just go up 2 numbers.

NGK TR5
TR55
TR6
TR7
......
Posts: 4265 | From: Fair Oaks, CA | Registered: Nov 2000  |  :


 
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