OK wise small block guys.. here's an update.

I installed a 1/2" spacer beterrn the carb and the air cleaner to make sure there was no clearance issues with linkage. No change.

Removed the carb and resealed the gasket. No change.

I checked vacuum at the carb port and it's 25+ at idle and about 10 - 12 at wide open throttle. Still bogs and it appears that the top plates in the secondaries do not open. I still think this may be vacuum related??

Thanks a lot.

Regards,

Glenn in Oregon