408 horse power?

Read my thread on my 416 stroker. Simliar build to yours. I used my stock 360 heads with a light cleanup, XE484H cam, LD340 intake, and 750 Edelbrock. Best pull at machine shop was 420hp and 475lbs of torque. Last pull (in video) before I took it home with 14" chrome aircleaner was 408 hp and 460 lbs at torque. The maximum torque was at 4300 rpm and maximum hp at 5300 rpm... I was told the carb was holding it back. It was asking for more.