off the MAF 42.17lb/min and volumetric efficiency at 313.5 g/sec
If my clutch wasn't slipping, I bet I could put down some great numbers

With the updated Stage 2 tune, the fail frequency was raised to 11000hz which indicates GM acknowledged its possible to exceed 36lb/min airflow on a Stage 2 3.0" pulley. Given your pulley size, your airflow is right in line with what is to be expected at redline.