Bolt on kickdown adapters have been the norm for decades. Hasn't been an issue for me. Holley uses them, Edelbrock uses them. Just have to remember to use one if you need it.
My experience with a 360 running a 625 or 7550 carb is limited to the Edelbrock Perfomer carb. FWIW, the 625 gave better mileage, the 750 better top end. Since I didn;'need to exceed 115 and I daily drove it I went with the smaller carb on a mildly warmed up 360.
No idea how useful that would be with a Street Demon
Last edited by Sniper; 05/22/21 05:21 PM.
