I have good news and bad news. We ran the car today and it looked good at first and there was no smoke. Then I ran it in first gear to red line and released the throttle in an effort to produce maximum vacuum in the engine. The engine released grey smoke on left side only. This is actually a step forward because the smoke had been coming from both sides. Maybe the intake gasket slipped when installed. I will pull the intake again and try to find the root cause.