Armchair Dyno.

I am building a 351C 2V

Here are my ingredients:

9.5 to 1 pistons
73CC heads (open chamber) w/2.19 intake and 1.71 exh. (ish)
performer cam
performer intake
balanced rotating assembly.
4150 650 holley

Any HP guesses?

Do you have the cam specs or grind #?
Flow figures on the heads?
Exhaust size?
Headers?

my guess is anywhere between 0-350 HP .... 0 if you blow it.... and 350 if you build and break it in well.... course you could have all the HP in the world and have no torque and get nowhere