* Cylinder heads: Different heads have different porting and combustion chamber sizes, significantly affecting power.
* Cam shaft: The camshaft profile dictates valve timing and lift, drastically influencing power and torque characteristics.
* Intake manifold: The design of the intake manifold affects airflow to the cylinders.
* Carburetor or fuel injection system: The type and tuning of the fuel delivery system are critical.
* Exhaust system: The exhaust system's design affects back pressure and scavenging.
* Internal components: Piston design, connecting rods, and crankshaft all play a role.
A 350 small-block with the 10054727 block could produce anywhere from under 200 horsepower in a relatively stock, low-performance configuration to over 500 horsepower with significant modifications. There's no single answer without knowing the specifics of the engine's build.
