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 |
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. |
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. 2.02 intake 1.60 exhaust SS valves Also what gap should I start at? Chris |
I run .030 gap with alcohol.
Zip. |
Originally Posted by zipper06
I run .030 gap with alcohol.
Zip. Chris |
NGK-R5671A-9 for alcohol
NGK-R5671A-8 for gas Depending on the compression you have you should probably index the plugs just to be on the safe side. Zip. |
Thanks Zip
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when you index them.witch way sould they be facing ?????
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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.
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Originally Posted by bigray
when you index them.witch way sould they be facing ?????
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