Dedicated to the Promotion and Preservation of American Muscle Cars, Dealer built Supercars and COPO cars. |
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#1
07-23-2010, 03:35 AM
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ZL1 SPARK PLUGS
HI what are the best spark plugs for a 1969 zl1
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Barry Allan 
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#3
07-23-2010, 02:57 PM
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Re: ZL1 SPARK PLUGS
I use AC R43XLS. Extended tip is the difference. The ZL-1 cam eats plugs, so I change them offen.
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1968 Z/28 34,000 mile, born with engine and trans, Shipper, California car, Fathom Blue, deluxe interior, M21, 3.55 Posi 1962 Oldsmobile Jetfire, Factory all Aluminum V8 Turbocharged and Methanol Injected TURBO ROCKET engine, 4 speed Hydramatic, 4 link rear suspension, 3.36 Anti-Spin differential, California car, PS, PB, PW, AC, Jetfire 2 option package.
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#4
07-23-2010, 04:47 PM
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Re: ZL1 SPARK PLUGS
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: 69SSZL1</div><div class="ubbcode-body">I use AC R43XLS. Extended tip is the difference. The ZL-1 cam eats plugs, so I change them offen. </div></div>
If you're not after that "nostalgic" look, and are looking for a better plug than the AC, try an NGK...the NGK site says the standard plug is the BR5ES, which would be an R6918B-7 in a racing plug...someone might wanna double check those numbers, as I'm kinda in a rush this morning!
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