I think it possible but only in true race trim. Something you would never drive the street in. Gasoline Fuel NOT available at the pump.
(Or is it????) At 720 hp per cube...
It would be a 2hp/cube build for a 360.
1.76 hp/cube on a 408.
1.65 hp/cube for a 434 stroker.
Getting easier......
A 360 making;
1.50 per cube, it is 540hp,
1.65 per cube it is 594 hp.
1.76 per cube it is 633 hp.
. 720hp (a 434)
- 633hp (a 360)
= 87hp. That's a lot of hp and stress at this level.