400 spark plugs
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400 spark plugs
i've put a large carter 4 barrel (Thermoquad) , Edelbrock manifold, 1-3/4" primary headers, mild rv cam on the 400 in my 78 Bronco and the stock spark plugs seem to be a little hot... has anyone worked out a good plug for this setup?
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ClatonK
335 Series- 5.8/351M, 6.6/400, 351 Cleveland
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Dec 18, 2005 12:51 PM
fatherdoug
335 Series- 5.8/351M, 6.6/400, 351 Cleveland
2
Jun 23, 2004 11:13 AM
