Holley 6709 double pumper 750 carb info

Those aren’t going to be good carbs for what your doing. I’d sell them and look for a set of 6109’s (750 DP TR carbs). Good carbs for your application. Being that you’re learning these would be a lot closer with the “out of box” calibration. A set of 3310’s (750 vacuum carbs) would also work and are cheep and readily available. They would need some additional calibrating to really get them dialed. I’m suggesting stuff that’s a bit more budget friendly. Obviously a modern set of purpose built carbs is going to be easiest. Those come at a cost though.