Which Spark Plug
#1
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Join Date: Jan 2003
Location: Douglasville Ga
Posts: 474
Which Spark Plug
Hey guys, I am needing some advice on selecting a spark plug. I have a 421 SBC on alcohol. The compression is 14:1 I have a MSD 7AL-2 with a baster coil to provide the spark. Not too familiar with alcohol. What plugs would yall recommend. Any help or advice would be greatly appreciated.
Chris
Chris
#3
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Join Date: Jan 2003
Location: Douglasville Ga
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Originally Posted by zipper06
Which heads? If you have Brodix heads you can go to their website and they have recomendations. I run the NGK plugs which they call for with Track 1's
Zip.
Zip.
2.02 intake 1.60 exhaust SS valves
Also what gap should I start at?
Chris
#9
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Join Date: Jun 2005
Location: potash country
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My Enderle Alcohol injected Altered has a 13.5:1 sbc 434 with Brodix 11X heads and I run NGK B9ES plugs gaped at .035 and I run an MSD7AL3 with a Pro Power coil. Very reliable with no issues.