At TSP, we live and breathe LS & LT performance. Our mission is to deliver precision-engineered components that unleash the full potential of your GM powerplant — all backed by expert support and fast shipping. From intake manifolds to ignition systems, we provide the parts you need to build it right the first time.

  • TSP Chevy Big Block Aluminum Cylinder Head - High Performance Auto Part

    LS/LT Air and Fuel Delivery

    Intake Manifolds, Fuel Injectors, Throttle Bodies ...

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  • TSP Chevy Big Block Aluminum Cylinder Head - High Performance Auto Part

    LS/LT Front Drive Systems

    Serpentine Kits, V-Belt Systems, Pulley Kits...

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  • TSP Chevy Big Block Aluminum Cylinder Head - High Performance Auto Part

    LS/LT Ignition and Power

    Alternators, Ignition Coils, Wires, Starters...

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  • LS/LT Electrical Wiring

    Wiring Harnesses, Extensions, Adapters...

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  • TSP Chevy Big Block Aluminum Cylinder Head - High Performance Auto Part

    LS/LT Bushings & Mounts

    Engine Mounts, Transmission Mounts ...

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  • Polished

    LS/LT Engine Components

    Valve Covers, Oil Pans, Timing Covers, Gaskets

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  • TSP Chevy Big Block Aluminum Cylinder Head - High Performance Auto Part

    LS/LT Heads and Valvetrain

    Cylinder Heads, Camshafts, Rocker Arms

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LS/LT Blogs

  • Top 5 LS Swap Mistakes to Avoid

    Top 5 LS Swap Mistakes to Avoid

    How to Make Your LS Engine Swap a Success The LS swap has become the gold standard for car enthusiasts, hot rodders, and racers who want reliable horsepower, modern performance,...

    Top 5 LS Swap Mistakes to Avoid

    How to Make Your LS Engine Swap a Success The LS swap has become the gold standard for car enthusiasts, hot rodders, and racers who want reliable horsepower, modern performance,...

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  • How to Choose the Right Intake Manifold

    How to Choose the Right Intake Manifold

    How to Choose the Right Intake Manifold for Your LS & LT Engine When it comes to getting the most out of your LS or LT engine, the intake manifold...

    How to Choose the Right Intake Manifold

    How to Choose the Right Intake Manifold for Your LS & LT Engine When it comes to getting the most out of your LS or LT engine, the intake manifold...

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  • LS vs. LT: What’s the Difference?

    LS vs. LT: What’s the Difference?

    Your Complete Guide to GM’s Modern V8 Engines When it comes to modern GM performance, two engine families dominate the conversation: the LS and the LT. Whether you’re building a...

    LS vs. LT: What’s the Difference?

    Your Complete Guide to GM’s Modern V8 Engines When it comes to modern GM performance, two engine families dominate the conversation: the LS and the LT. Whether you’re building a...

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LS & LT Performance Parts FAQ

What is an LS engine?

The LS engine is a modern small block V8 platform developed by General Motors, introduced in the late 1990s. Known for its lightweight design, strength, and performance potential, LS engines are widely used in performance builds, engine swaps, and racing applications.

What is the difference between LS and LT engines?

LS engines use port fuel injection, while LT engines (Gen V) feature direct injection for improved efficiency and power. LT engines also include updated cylinder heads, combustion chambers, and advanced technologies designed to enhance performance and fuel economy.

Why are LS engines so popular for engine swaps?

LS engines are popular for swaps due to their compact size, affordability, reliability, and massive aftermarket support. They can be installed in a wide variety of vehicles, making them one of the most versatile engine platforms available.

What parts are needed for an LS swap?

An LS swap typically requires an engine, wiring harness, ECU, fuel system components, cooling system, engine mounts, and accessory drive system. Additional parts such as intake manifolds, ignition components, and exhaust systems are often upgraded for performance.

What are the best upgrades for LS engines?

Common LS performance upgrades include intake manifolds, camshafts, fuel system components, ignition upgrades, and cooling system improvements. These upgrades help increase horsepower, improve throttle response, and enhance overall engine efficiency.

Do LS engines require special fuel systems?

Yes, LS engines typically require high-pressure fuel systems, especially for performance builds. Upgrading fuel pumps, injectors, and regulators ensures proper fuel delivery under increased power demands.

What is an LS intake manifold upgrade?

An LS intake manifold upgrade improves airflow into the engine, increasing horsepower and torque. Aftermarket manifolds are designed to optimize air distribution and performance across different RPM ranges.

Are LS engines reliable for daily driving?

Yes, LS engines are known for their durability and reliability. With proper maintenance and quality components, they can handle daily driving, performance use, and high-horsepower builds.

What vehicles can use LS engines?

LS engines are commonly swapped into classic muscle cars, trucks, hot rods, and even import vehicles. Their versatility and compact design make them suitable for a wide range of applications.

Where can I buy LS and LT performance parts?

Top Street Performance offers a wide selection of LS and LT performance parts, including intake manifolds, ignition components, fuel systems, and accessory drive solutions designed for performance builds and engine swaps.