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Re: Yet Another Spark Plug Question
Indexing your single-electrode plugs may do more good than the E-3's. A friend has a '73 Cadillac w/472 and he's really meticulous about plug indexing, tweaking the carb and timing, etc. - and I swear, the exhaust at idle smells like it's a modern fuel injected engine, and it runs well.
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Alex V.
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1967 C10 Suburban, 350/NP435, Green/Green, PS, PB, HD cooling, charging, shocks, and springs.
1985 GMC C3500 SRW, Sierra Classic, 454/TH400, white/blue.
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