How much power it can *take* reliably is a much more complex question, with no single definitive answer. It depends heavily on several factors including:
* Quality of supporting modifications: Simply adding more boost without upgrading the fuel system, cooling system, intake, exhaust, and other components will quickly lead to engine failure.
* Tuning: Proper tuning is absolutely critical. A poorly tuned engine, even with supporting mods, will be significantly less reliable and prone to damage.
* Driving style: Aggressive driving and high-rpm operation put more stress on the engine.
* Maintenance: Regular maintenance is crucial for longevity, regardless of power levels.
With significant and well-executed modifications (forged internals, upgraded supercharger, better cooling, improved fuel system, etc.), a Lightning engine *can* potentially handle 600-700 horsepower and even more with substantial investment and risk. However, at these power levels, reliability decreases substantially and the engine requires meticulous care and monitoring. Pushing past these figures drastically increases the risk of catastrophic failure.
It's important to note that exceeding the factory design limits significantly shortens the engine's lifespan and increases the chances of costly repairs or a complete rebuild. Many owners prefer to stay within a safer range of 450-550 horsepower for better reliability and less stress on related components.
