Pressure to get car done

The car is stunning.
Years ago a friend rebuilt a 350 for his 67 Chevelle. When I arrived they were trying to get it started but were just pouring a bit of gas down the carb. I got them to get the fuel pump wired in sko the float bowls could be filled. I went through the initial timing and firing order. Open headers and 11:1 compression with the car facing in the garage. When it fired up at 0230, mom came flying out of the house and clipped all of us with a broom. The open garage acted like a concert hall. Woke people up 10 blocks away. This was just at the introduction of unleaded gas. He had to run 1/2 unleaded premium and half lead regular that was still available.
The guys laughed about that for a long time, but not around his mom or she would go for the broom again.