Loc: Fallbrook, CA, USA
I have been running my 40 Chevy with a mild GMC 302 for 20 years using the same park plugs that came with the used engine. They are Champion 1J11Y. I also have a an HEI distributor powering the plugs. They work fine but I'd like to replace them before they disintegrate. They seem to run just about right heat wise with a light tan color on the insulator. Any suggestions for modern replacement plugs?
Loc: Yacolt, WA, USA
NGK 3332 plugs work great with a high voltage coil and/or an HEI. I am running a set gapped at 0.050 inches with an HEI distributor and they work much better than the original AC R44 plugs. Starts easier and idles smoother.