Are there any boost related forums you frequent?

Is the wall you’ve run into fairly common at that boost level with a roots style blower?

It just seems like that’s really not much boost at all.

One of my friends ran a 515bbc with an 8-71 and 2x4500 carbs in a 79 Malibu.
11-12 lbs boost, race gas.

10.5 tires, 3.73 gears, had to walk it out just a bit....... then push the gas to the floor......went 8.90’s at 155-156 on a good pass.
Still had the factory interior, power windows, and tilt wheel.