The 7 Ultimate Texas Speed And Performance Upgrades For Your LS/LT Engine In 2025

Texas Speed and Performance (TSP) remains the undisputed leader in aftermarket performance for GM’s LS and LT engine platforms, and as of December 15, 2025, the company continues to push the boundaries of horsepower and torque. Whether you own a classic LS1 F-Body, a modern LT1 Camaro, or a 5.3L Silverado truck, TSP offers meticulously engineered components and complete engine packages designed to deliver massive power gains and reliability. This guide breaks down the most impactful and popular upgrades from TSP right now, focusing on the components that define a true high-performance build.

The company, founded in 2003 by Trevor Doelling and Jason Mangum in Georgetown, Texas, has built its reputation on manufacturing high-quality, high-value components ranging from basic bolt-ons to complete, 1,000+ horsepower short blocks. While recent news has focused on the discontinuation of certain HEMI short block variants, such as the acclaimed Brawler Series 426 cubic-inch models, TSP's commitment to the LS/LT family is stronger than ever, with new product refinements constantly hitting the market.

Texas Speed and Performance: Company Profile & Core Offerings

Texas Speed and Performance is an aftermarket performance parts manufacturer and retailer specializing in late-model GM vehicles, primarily those equipped with LS and LT series engines. Their product line is extensive, covering everything needed for a complete engine build.

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• Founded: 2003
• Founders: Trevor Doelling and Jason Mangum
• Headquarters: Georgetown, Texas
• Specialty: LS (LS1, LS2, LS3, LS7) and LT (LT1, LT4) Engine Performance.
• Key Product Categories: Camshafts, Cylinder Heads, Short Blocks, Long Blocks, Exhaust Systems, and Intake Manifolds.

The 7 Must-Have Texas Speed Performance Upgrades for 2025

To maximize the potential of your LS or LT engine, a balanced approach to airflow and engine internals is essential. These seven TSP products and packages represent the pinnacle of their engineering and offer the highest return on investment for performance enthusiasts.

1. The Legendary TSP Torquer V2 Camshaft

The Torquer V2 camshaft is arguably the most famous and widely used cam in the LS community, known for producing impressive peak horsepower while maintaining excellent street manners (when paired with the correct torque converter).

• Specs: The most popular configuration is 232/234 duration with .600"/.600" lift, available on various LSA (Lobe Separation Angle) options like 111 or 112.
• Key Benefit: It provides a noticeable, aggressive lopey idle and significant power gains (often 50–55 rear-wheel horsepower) when combined with supporting modifications like headers and a proper tune.
• Requirement: For automatic transmissions, a minimum 3,000 RPM stall speed torque converter is highly recommended to properly utilize the cam’s powerband.

2. TSP PRC CNC-Ported Cylinder Heads

TSP’s Precision Race Components (PRC) cylinder heads are the foundation of any serious engine build, providing superior airflow over factory castings. These heads are CNC-ported, meaning the intake and exhaust runners are precisely machined for optimal velocity and volume, leading to massive horsepower potential.

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• Popular Variants: The PRC 215 heads are popular for 5.7L and 6.0L LS engines, while the PRC265s are often chosen for LS7 and large-bore applications.
• Design Feature: Many PRC heads feature extra-thick deck surfaces, which are crucial for maintaining head gasket sealing integrity, especially in high-boost, power-adder applications.
• The Package: TSP frequently bundles these heads with their camshaft kits, offering a complete "Heads and Cam" power package, sometimes featuring popular profiles like the Chopacabra Camshaft.

3. TSP 427 CID Stroker Engine Packages

For those seeking displacement as the ultimate power solution, the 427 Cubic Inch Displacement (CID) stroker package is a flagship offering. This involves increasing the stroke and bore of the engine to achieve a massive displacement increase, typically built on a resleeved aluminum block.

• Applications: Available as turn-key packages for LS3 and LS7 platforms, and even in a Vintage Series Turn-Key 427 CID for a classic look with modern power.
• Components: The core of the 427 package is a high-quality rotating assembly, often including forged pistons, connecting rods, and a stroker crankshaft to handle the immense power output.
• LT Variant: TSP also offers a 416–427 CID 4.00" stroke sleeved Gen 5 LT1/LT4 long-block for the newest generation of GM performance vehicles.

4. TSP Truck Camshaft Packages

Recognizing the massive market for GM truck performance, TSP developed a line of camshafts specifically for the 4.8L, 5.3L, and 6.0L truck engines. These cams are designed to deliver significant torque gains in the low-to-mid RPM range, where trucks need it most for towing and daily driving.

• Low Lift Series: The TSP Stage 2 Low Lift Truck Cam is popular as it is designed to still utilize the reliable GM LS6 single beehive valve springs, making it an extremely cost-effective power upgrade.
• High Lift Series: The TSP Stage 4 High Lift Truck Cam offers a more aggressive, lopey idle and a broader power band (up to 6200 RPM), requiring upgraded valve springs but delivering maximum naturally aspirated truck power.

5. TSP Long Tube Headers and Exhaust Systems

Headers are the essential first step in freeing up horsepower on any LS/LT engine by improving exhaust flow. Texas Speed’s long tube headers are known for their great fitment, quality construction, and deep, aggressive sound.

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• Material Quality: Typically made from high-grade stainless steel to resist corrosion and handle extreme heat.
• Performance Gain: When paired with an exhaust system and a proper tune, headers can unlock significant power, especially when combined with a TSP camshaft package.
• The Sound: Enthusiasts frequently note that TSP headers provide a slightly deeper pitch sound compared to some competitors due to slightly thicker header tubes.

6. DOD/AFM Delete Kits for Reliability

Modern GM engines often come equipped with Displacement on Demand (DOD) or Active Fuel Management (AFM) systems to improve fuel economy. While functional, these systems are a known point of failure in high-mileage or high-performance applications. TSP’s DOD/AFM delete kits are a highly recommended reliability upgrade for any engine receiving a cam swap.

• Components: A typical kit includes new lifters (such as the reliable GM LS7 Lifter Set), valley cover, head gaskets, and head bolts, effectively removing the failure-prone components.
• Necessity: Deleting the AFM system is mandatory when installing a non-AFM specific camshaft like the Torquer V2 or the Cleetus McFarland "Bald Eagle" Camshaft.

7. TSP 396 CID LS1 Turn-Key Package

For the classic LS1 platform (found in C5 Corvettes and 4th Gen F-Bodies), the 396 CID turn-key package offers a comprehensive solution for a powerful, reliable engine swap. This package is built to bolt directly into your vehicle, taking the guesswork out of component matching.

• Power Output: These packages are rated for impressive naturally aspirated horsepower, such as the TSP 396 CID 545 HP LS1 Turn-Key Package.
• Convenience: A turn-key package includes the long block, intake manifold, oil pan, and often the front drive accessory kit, making it the fastest route to a high-horsepower build.

Why Texas Speed Continues to Dominate in 2025

Texas Speed and Performance maintains its market dominance by focusing on the core principles of the LS and LT architecture. Their dedication to in-house engineering and manufacturing allows them to control the quality of critical components like the PRC Cylinder Heads and their proprietary TSP lobe profiles used in their camshafts. From budget-friendly upgrades like the TSP Stage 2 Truck Cam to maximum-effort builds like the 427 CID long-block, TSP provides a clear, high-performance path for every enthusiast.

The company’s ability to quickly adapt to market trends—such as the recent focus on the Gen 5 LT platform and the continuous development of their Brawler Series short blocks for other platforms—ensures that they remain at the forefront of American V8 performance. For anyone looking to extract maximum, reliable power from their GM performance vehicle in 2025, a TSP-based combination remains the gold standard.