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Old 06-16-2003, 07:02 PM
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motors done now what plugs to use?

350 SB 365hp or so, chevy 10-1 compression HEI.

Oh yeah aluminum heads (not sure if that matters)

What do you guys like to run?

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Old 06-16-2003, 08:55 PM
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The head manufacturer can tell you what pluds to run. All I know is with aluminum you should run a plug with washers not a tapered plug.
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Old 06-17-2003, 11:53 AM
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And use anti-seize compound on the threads. Not just on the plugs, on all threads in aluminum.
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Old 06-17-2003, 12:18 PM
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Use antisieze on all threads period. It saves on drill bits.
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Old 06-17-2003, 12:45 PM
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best plug !

i use the bosh plat quad-4.....the best!!!!......vette guy
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Old 06-17-2003, 02:56 PM
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Champions for plug chops and NGK for everything else.

Why?

Champions are nickel plated and the coating burns off at a definite point on the side electrode so tuning your jetting is easy once you know how.

NGK's because they have the narrowest heat range numbering system and they just seem to have better quality control, I have never had a bad plug out of the box. Plus the center electrode well seems to be deeper and wider than the others (greater arc-over resistance) for the equivalent heat range.
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Old 06-17-2003, 07:25 PM
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Thanks for all the info, these are corvette heads the 57cc ones.
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