Carburetor size Question

I see a picture of alloy heads; are those going on?
At 9.75 Scr?

If yes, then the 224 cam well do well, altho the next smaller cam will make more pressure and thus more low-rpm power.
The 224 will powerpeak up around 5000 with headers, which with 3.23s and say 225/75-15s is about 46 mph in First gear. If the power march starts at 3000, with no tirespin, that would be 28 mph .....
jus saying