Boosted Miata Ls Swap: Achieving 700+ Hp with Tr6060 Transmissions and Forged Internals

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The Mazda Miata is known for its lightweight and nimble handling, making it a favorite among car enthusiasts. However, for those seeking more power, the LS swap has become a popular modification. By combining the Miata’s chassis with the robust LS engine, particularly when boosted, enthusiasts can achieve impressive horsepower figures. This article delves into the process of achieving over 700 horsepower using TR6060 transmissions and forged internals.

Understanding the LS Engine

The LS engine family, originating from General Motors, is renowned for its performance and reliability. Here are some key features that make it an ideal candidate for a Miata swap:

  • Lightweight aluminum construction
  • High power-to-weight ratio
  • Extensive aftermarket support
  • Versatile engine options

Choosing the Right Miata Model

While any Miata can be swapped with an LS engine, certain models are more favorable due to their weight, chassis design, and availability. The following models are commonly chosen for swaps:

  • NA (1989-1997) – Classic styling and lightweight
  • NB (1998-2005) – Slightly more modern with improved rigidity
  • NC (2006-2015) – Offers more space for engine modifications

Preparing for the Swap

Before beginning the swap, it’s crucial to gather all necessary components and tools. Here’s a checklist of what you’ll need:

  • LS engine (preferably a 5.3L or 6.0L variant)
  • TR6060 transmission
  • Engine mounts and transmission crossmember
  • Wiring harness and ECU
  • Cooling system upgrades
  • Fuel system upgrades

Engine Mounts and Transmission Setup

One of the critical aspects of an LS swap is ensuring that the engine and transmission are securely mounted. Custom engine mounts are often required. Here are some tips:

  • Use high-quality materials for engine mounts to withstand vibrations.
  • Ensure proper alignment of the engine and transmission for optimal performance.
  • Consider adjustable mounts for easier alignment during installation.

Forged Internals for Boosted Applications

To achieve over 700 horsepower, upgrading the engine internals is essential, especially when adding boost. Here are the recommended forged internals:

  • Forged pistons – to withstand high compression and boost levels.
  • Forged connecting rods – for increased strength and durability.
  • Forged crankshaft – to handle the increased power output.

Boosting the LS Engine

Boosting the LS engine can be achieved through various methods, with turbocharging and supercharging being the most common. Each method has its advantages:

  • Turbocharging – provides higher efficiency and power potential.
  • Supercharging – offers immediate power delivery and responsiveness.

Fuel System Upgrades

With increased horsepower comes the need for a more robust fuel system. Upgrading the fuel system is crucial to ensure the engine receives adequate fuel. Consider the following:

  • High-flow fuel injectors – to deliver the necessary fuel volume.
  • Upgraded fuel pump – to maintain pressure under high demand.
  • Fuel lines – ensure they can handle the increased flow and pressure.

Cooling System Enhancements

To prevent overheating, upgrading the cooling system is essential when boosting the LS engine. Here are some modifications to consider:

  • High-performance radiator – to improve heat dissipation.
  • Upgraded intercooler – for better charge air cooling.
  • Thermostat and water pump – ensure efficient coolant flow.

Tuning for Maximum Performance

Once all components are installed, tuning the engine is vital to achieve maximum performance. A professional tuner can help optimize the engine settings for the best results. Key areas to focus on include:

  • Air-fuel mixture – to ensure optimal combustion.
  • Ignition timing – to maximize power without knocking.
  • Boost levels – to achieve desired horsepower safely.

Conclusion

Achieving over 700 horsepower in a boosted Miata LS swap is an ambitious yet rewarding project. With the right components, preparation, and tuning, enthusiasts can transform their Miata into a high-performance machine. The combination of a lightweight chassis and powerful LS engine creates an exhilarating driving experience that is hard to match.