Its relatively easy to reach 300 HP with either a 250 or a 292 in N/A form. The 292 in bone stock trim makes 300 ft.lbs. of torque above 2000 RPM and beyond, so torque isn't a problem with that engine. The stock type siamese head can also support 600 HP and beyond with various degrees of porting and lumps. Turbos and/or nitrous have pushed these engines to 700 HP and beyond as well, so the range of performance is very wide and parts are available for whatever you want.
