ZL1 SPARK PLUGS

[Chevy454]

<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 &quot;nostalgic&quot; 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!