Progress with the engine. First dyno run yesterday, here's a short clip:
Kevin's FE 427 side-oiler dyno run - YouTube
The vacuum secondary wasn't opening, so this run was essentially with a 2 barrel carb. Builder is picking up a spring kit to install a lighter spring. Without the secondaries, it generated 460 hp and 420 ft.lbs. torque, so already met my ask of at least 450 hp. Not sure how much the numbers will change with the secondaries working, but will find out today.