Lean out and miss fire

Mims Gt said
locked out for street racing.

Engine was built by unknown builder
Carb is 850 BLP 4150
timing set 34 deg
fuel system is edelbrock mech pump with regulator @ 6psi no return
MSD billet distrib w/ msd digital 6AL
AFR reading is how I know she is leaning out which is weird due to fuel in site glass

Thanks, Based on that what is you idle speed? Have you connected a vacuum gauge to see how much its pulling at idle?

Did this just start or has it always been this way? You state you swapped carbs, what did you swap from and too and have either been tested as good?

Auto or manual trans?