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Thread: Headers on a 5.3 chevy
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04-30-2004, 08:18 AM #16
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My truck
Av
Not fast enough
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05-14-2004, 12:04 PM #17
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Don't use irridium or platinum for performance
These plugs are great if you drive a normal car like a normal person, but for towing or speed, they are not ideal. I have seen melted tips on irridium plugs on stock or slightly modified supercharged Grand Prixs. I had platiunum in my Pontiac TA with 12:1 compression and noticed a difference switching to NGK plugs (less knock).
1989 Ski Centurion Barefoot Warrior
1995 Hurricane Fundeck "S.S. Putz Putz"
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