I bet $25,000 that the modular efi race motor 323ci 5.3 would make a better street motor when detuned to lower boost for pump gas than a bbf with a blow threw carb and a single or twins would equally detuned for pump gas.
The bbf will be making more power as its almost twice as big, but the modular will return 15-25mpg depending city or highway. On a true 30-100 mile cruise, your be very hard pressed to get the bbf to show maybe 15mpg highway with a gear vendors overdrive. 5-10 if its just a 2-3 speed.
Bbf's are great for a race car, modulars are great for street and good for racing.
Ideally, 4v coyote heads on a 600ci motor would be incredible, I hope ford eventually makes atleast a boss 429 with 4v vvt-ti heads even just as a commemorative crate motor.
How cool would a restomod 70' boss 429 be with a commemorative 429ci efi vvt-ti na mill making 750hp+? With twins it could easily make 1500whp on 10psi.
No one use carbs anymore for BBs they use standalones. He wants to make a race car by what he's talking about so the drivability won't apply anymore, as the car probably won't be street legal anymore.