Big carb (Quick Fuel 850) on a small engine?

Continued..

Go larger is gonna stop given hp gains at some point say on the 400 hp engine eg. Above 850 stop showing real gains so 950 made 400 hp and 850 did the same a 750 was down 5 hp, 650 down 15 hp, 550 down 25 hp etc... Choose your compromise :)

Plus people just know what works there's probably near zero mopar V8 application where a 600/650 carb is too big even 750 proven themselves on a wide variety of combos from mild to wild.