[jlb169]

Mike: Plugs look good, light brown. Weathers clearing here on the east coast so I hope to try the changes soon.
The post by Excaliper also makes a lot of sense. The motor is camed. "supposed" to produce 500 HP when it's right. Gas mpg was not high on my list when I had the motor built and it shows Very quickly. I'm also going to try running on the mech. advance only and see what I get. I may also need to change to a high torque starter for hot starts. Any other suggestions will be appreciated. Jack