ZL-1 Spark Plug Gap

[Chevy454]

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Camaro Rick</div><div class="ubbcode-body">The 263 distributor has no spot for a vacuum advance pod, but I think if what you are saying about going all in at 3000 rpm @42degrees, i will try that </div></div>
I'm saying you need to check *where* it's all in by...could be 2000, could be 3000, could be 4000, etc...most factory curves were really slow, so you'd have to really zing the engine up to arrive at total timing.

You can definitely go too wide on the gap...you can't get as wide on the stock stuff, as the coil simply doesn't have the pop and the wires can't handle it. The larger gap will result in a better spark, and have more contact with the charge.