Thread: spark plugs questions

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  1. #1 spark plugs questions 
    SE Level Member mtz956's Avatar
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    i have a 98gtp need to change sparkplugs dont know with wat to go.
    my last ones i had was the iridium ngk, but i had a bbv issue so didnt feel any preformance. any suggestion?
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  2. #2 Re: spark plugs questions 
    GrandPrix Junkie CTKGP09's Avatar
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    if you are modded go with autolite copper plugs of the appropriate heat range

    if you are sock another set of the stock plugs will do just fine and last alot longer
    '04 Chevy Silverado LT 4x4 - intake, headers, full exhaust, zo6 cam, 799 heads, tune, leveled, 33's
    '00 Grand Prix GTP DAYTONA 500 - L36 block, S1X, intercooled, GenV, N*, headers, full exhaust, coilovers, 5 speed swap, stage 3+ clutch
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  3. #3 Re: spark plugs questions 
    SE Level Member mtz956's Avatar
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    acdelco iridium or platnium?
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  4. #4 Re: spark plugs questions 
    The Blue One blueguy's Avatar
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    Well...is your car stock?

    If so...Autolite 606's gapped at .055".
    Sold WBody's: '03 Blue GTP/'98 Green GTP/'98 Silver GT/'05 GXP
    '99 Chevrolet Silverado Classic Z71 4x4 - K&N Intake/Gibson Exhaust #TRUCKTHINGS
    '12 Buick Regal Turbo - ZZP CAI/20% Tint/HID's
    '89 Ford Mustang LX Notchback - LM7 5.3, 4L80, 9", HX40
    '04 Chevrolet Corvette MRM A4/LS1 - TSP LT's, 3"O/R X, AFE S2 CAI
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  5. #5 Re: spark plugs questions 
    SE Level Member mtz956's Avatar
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    al 606 r better than ngk iridium? i have cold air intake,
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  6. #6 Re: spark plugs questions 
    GrandPrix Junkie CTKGP09's Avatar
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    for a GTP you want autolites...simple as that
    '04 Chevy Silverado LT 4x4 - intake, headers, full exhaust, zo6 cam, 799 heads, tune, leveled, 33's
    '00 Grand Prix GTP DAYTONA 500 - L36 block, S1X, intercooled, GenV, N*, headers, full exhaust, coilovers, 5 speed swap, stage 3+ clutch
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  7. #7 Re: spark plugs questions 
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    iridium is fine for an engine that takes well to those plugs.

    These ones love copper plugs for some reason.
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