The distributor vacuum is coming off of the top vac port on the holley 390. it is labled as the timed spark vac source. It does move more and respond sooner than I expected too. I'm not sure if the transmission will have a big effect on it or not. But the engine right now has zero load. Nothing is attached to the flywheel.
There was no thunder that day. but it was a little windy. It might have been the wind blowing on the camera, or those mufflers doing there job.
