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-   -   Aluminum BBC - Spark Plugs (https://classracer.com/classforum/showthread.php?t=48590)

Ben Kallies 07-30-2013 08:56 AM

Aluminum BBC - Spark Plugs
 
I'm looking for spark plug recommendations on a 427 BBC street/strip motor with GMPP aluminum heads, 10:1 compression, .570 lift flat tappet cam. Using a mixture of premium and race gas. I'm hoping for actual part numbers, not just a brand preference. Of particular interest is the heat range suggested, as well as whether I need a .460 or .750" reach. Thank you in advance.


Ben Kallies
B/S 3069

BillK 07-30-2013 12:50 PM

Re: Aluminum BBC - Spark Plugs
 
Ben,
Edelbrock calls for a Champion RV12YC They make the heads as far as I know so that should be a good starting point.

Alan Roehrich 07-30-2013 02:04 PM

Re: Aluminum BBC - Spark Plugs
 
RC12YC Champion. It's 0.750" reach, projected tip, and 5/8" hex. Easy to find, affordable, reliable, and consistent.

BillK 07-30-2013 07:18 PM

Re: Aluminum BBC - Spark Plugs
 
My bad, I could have sworn the catalog at the shop said RV12 ??? Just looked at the web site and sure enough RC12 :)

Ben Kallies 07-31-2013 12:23 PM

Re: Aluminum BBC - Spark Plugs
 
Alan; Bill,

Thank you for your replies. I have one follow-up question: I notice that both of these are "resistor" plugs. Are resistor plugs better than non-resistor plugs in a hi performance application, or doesn't it matter? Thanks

-Ben


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