I did several different dyno testing sessions om my old pump gas motor on two different dynos, a DTS and the local Studka when it wasn't calibrated correctly.
My message is on MY test on the Studka show 7 HP more with the six pack set up like I ran it on the street and race it with the 3.0 exhaust system corked up, I used a Team G intake with a known good Holley 1050 CFM List # 9375 non HP carb, the torque was exactly the same on most of the same RPMs
I didn't do any testing with the same heads and the different intakes and carbs at the track