With significant modifications, you could potentially reach 300-400 hp, but this requires substantial investment and work, including:
* Internal engine upgrades: Forged internals (crankshaft, connecting rods, pistons), high-performance camshaft, ported and polished cylinder heads, higher compression ratio.
* Induction system upgrades: High-performance intake manifold, carburetor or throttle body injection system, cold air intake.
* Exhaust system upgrades: Headers and a high-flow exhaust system.
Going beyond 400 hp would likely require extensive modifications, potentially including forced induction (turbocharging or supercharging), which adds significant complexity and cost. It's also important to consider the structural integrity of the block; pushing it too hard without reinforcement might lead to failure.
In short, there's no single answer. The horsepower potential is highly variable and depends on the level of modification.
