Ls vs Coyote Engine: Building a 700+ Hp Street Moa with Forged Internals and E85

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The debate between LS and Coyote engines has been a hot topic among automotive enthusiasts for years. In this article, we will explore the process of building a 700+ horsepower street machine using either the LS or Coyote engine, focusing on forged internals and E85 fuel. Both engine platforms have their own unique advantages and challenges, making this comparison essential for anyone looking to make a decision.

Understanding the LS Engine

The LS engine family, originally designed by General Motors, has become a popular choice for performance builds due to its lightweight design and robust aftermarket support. Here are some key features:

  • Aluminum construction for reduced weight.
  • Wide range of displacement options from 4.8L to 7.0L.
  • High-performance aftermarket parts availability.
  • Proven reliability and durability in high-performance applications.

Understanding the Coyote Engine

The Coyote engine, developed by Ford, represents a significant advancement in engine technology with its DOHC design and advanced fuel management systems. Key characteristics include:

  • 5.0L V8 with a naturally aspirated design.
  • Variable valve timing for improved efficiency and power.
  • Strong aftermarket support, especially for turbocharging and supercharging.
  • Modern engineering with lightweight materials.

Forged Internals: Why They Matter

When building an engine for high horsepower applications, the choice of internals is critical. Forged internals offer several advantages:

  • Greater strength and durability compared to cast components.
  • Ability to withstand higher levels of boost and stress.
  • Improved performance and reliability for street applications.

Choosing E85 Fuel for Performance

E85 is a blend of 85% ethanol and 15% gasoline, providing several benefits for high-performance builds:

  • Higher octane rating allows for more aggressive tuning.
  • Improved cooling properties reduce the risk of detonation.
  • Environmental benefits due to lower emissions.

Building a 700+ HP LS Engine

To achieve 700+ horsepower with an LS engine, consider the following key components:

  • Forged pistons and connecting rods for strength.
  • Upgraded camshaft for improved airflow.
  • High-performance intake manifold and throttle body.
  • Turbocharger or supercharger for forced induction.

Building a 700+ HP Coyote Engine

For a Coyote engine build targeting 700+ horsepower, focus on these essential upgrades:

  • Forged internals to handle increased power levels.
  • Supercharger kit for significant power gains.
  • Upgraded fuel system to support E85 usage.
  • High-performance exhaust system for improved flow.

Comparative Analysis: LS vs Coyote

When comparing the LS and Coyote engines, several factors come into play:

  • Cost: LS engines are often more affordable due to their widespread availability.
  • Weight: LS engines tend to be lighter, enhancing vehicle performance.
  • Aftermarket Support: Both platforms have strong aftermarket communities, but LS has a longer history.
  • Performance Potential: Both engines can achieve high horsepower, but the methods and costs may vary.

Conclusion

Deciding between an LS and Coyote engine for a 700+ horsepower street machine ultimately depends on personal preference, budget, and desired performance characteristics. Both engines have proven themselves capable of delivering thrilling performance when built with the right components and tuning. Whether you choose LS or Coyote, investing in quality forged internals and utilizing E85 fuel will help you achieve your horsepower goals effectively.