Don Terrill’s Speed-Talk

Hey Guys - I have a 455 Pontiac with E heads and 12.5 - 13 to 1 and E85. I have MSD 6AL, Billet Dist, Blaser 2 coil and Firecore wires with NGK's #7 gapped .028 to .030 - Ignition locked with rotor phasing adjusted.

What is a good GAP for this Plug Set up?
Thanks, Again, Craig

Mark Sullens says .032 and that seems to work well for us with a 13.1 iron headed amc.