Dual quads versus big hammer!!!...
The spring on this,...... and the power valve on a regular holley do the same thing.
Its like blocking the power valve(removing the metering rod spring)and not adding 8-10 jet size. It going to run lean lean lean under full throttle.
The club foot, on the TQ, in the direct connection book???.............. i would have to pull out and re read but. Yes it was a race calibration.