That's a damn nice looking big block in your Barracuda, and it probably runs better than anything I have. If the gas pedal is still comfortable after raising it 3/4" then great. I will say, though, that it would have been easy enough to get full carb opening with the OEM cable travel. Several possibilities, but lengthening the top levers on the intake bellcranks could have done it. Of course, once they were already made, it was probably easier to bend the gas pedal rod than to modify the upper bellcranks.
