Weiand #8007 intake on a 273 (Several questions)

well it better be a vacuum secondary 750 carb then for sure! You run a 750 mechanical secondary on a 273 below 3500-3000 he will be giving up a very noticeable ammout of torque! & will halfta spin to 7500^ to see real gains of the bigger cfm carb. Not to mention the lack of throttle response the larger carb will give. Mine has a 500 on dialed in via wide band and throttle response is yesterday!!!