Bore: 4.360
Bore +0.040: 4.400
Stroke: 3.850
Displacement:
Formula: (Bore/2)^2*Pi*Stroke*# of cylinders
Calculation: (4.400/2)^2*3.1415929*3.85*8=468.3 CI
Others will have to weigh in on HP and torque, but my view is 625 CFM is not enough carb - though it could be with stock heads and cam. You might want to check with the folks at
http://www.460ford.com/forum/
The heads have been opened up a bit on my 460 and it's running an aftermarket cam - and I'm not convinced the 770 CFM carb is big enough. Having said that, it does start and drive well on the street, and that's pretty much all I intend on using it for.