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C4 Corvettes, 1984 - 1996
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Spark Plug Heat Range???

C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Spark Plug Heat Range???

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Old

Oct 9, 2003 | 11:28 AM

#1

Five Window

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Joined: Sep 2002

Posts: 227

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From: Barnstable Mass

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Spark Plug Heat Range???

Anyone know where an AC-41-629 fits into the heat range spectrum? My Edelbrock heads came with a recommendation for Champion RC-12YC plugs. My parts store sold me the AC's as an equivalent plug. I want a cooler plug than whatever it is that they are. Just from the length of the insulator they appear on the hot side but I can't find any AC listing for them.

I actually always prefered NGK"s and want a cooler one of them. How about the BCPR6E-11?

Thanks

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Old

Oct 9, 2003 | 03:13 PM

#2

Strick

Race Director

Joined: Feb 2003

Posts: 11,672

Likes: 20

From: Lake Wylie SC

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Re: Spark Plug Heat Range??? (Five Window)

Can't you go to NGK and ask? I'd use a google search.

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