GM Performance Exhaust Header Gasket

The Legacy of GM Performance Parts

Few names carry as much weight in the performance automotive world as GM Performance Parts — today known as Chevrolet Performance. Born out of the high-octane energy of late-1960s Trans-Am Camaro racing, the brand was originally created to supply factory-backed race teams with cutting-edge hardware. When those race-developed components became available to the general public, the brand quickly grew into an industry benchmark for power and reliability.

Over more than five decades, GM Performance has expanded far beyond its racing roots. What started as track support evolved into a comprehensive catalog covering everything from complete crate engines to individual internal components. Today, the lineup spans race-proven crate engines, valvetrain components, air and fuel system parts, transmission equipment, and precision-machined engine internals — all engineered, designed, and tested directly by General Motors.

Built for the Track, Proven on the Street

One of the defining qualities of GM Performance Parts is that they originate from the same engineering teams responsible for production Corvettes, Camaros, and other high-performance GM vehicles. That factory-direct heritage means every component is held to specifications that survive the punishing demands of circle track, drag strip, and endurance racing environments — not just comfortable highway cruising.

At the foundation of any serious engine build is the engine block. GM Performance's cast-iron and aluminum block offerings — including the legendary Bowtie Race Blocks — feature precision CNC machining, four-bolt main caps, and Siamese cylinder bores designed to handle extreme horsepower and stress. These blocks are the starting point for some of the most formidable small-block and big-block builds on the market.

Protecting and sealing the front of the valvetrain is just as critical as the block itself. GM Performance engine timing covers are engineered to mate perfectly with GM small-block and LS-series platforms, ensuring correct sealing and oil control whether you're running a stock timing chain setup or an upgraded belt-drive system.

Equally important to engine performance is the valvetrain, and GM Performance engine valve lifters reflect that same commitment to precision. Their hydraulic roller lifters — including LS-series specific designs — reduce friction, improve cam-follower contact, and help maintain consistent valve timing under the high-RPM conditions that performance engines routinely see.

Why Choose GM Performance Parts?

• Factory Engineering: Parts are developed and validated by General Motors' own performance division, ensuring OEM-level fitment and reliability.
• Racing Heritage: Decades of NASCAR, NHRA, and Trans-Am development informs every component in the catalog.
• Broad Compatibility: From classic small-block Chevy applications to modern LS and LT platforms, GM Performance covers a wide range of engine families.
• Proven Horsepower: Components like the Bowtie Race Block are tested and rated to handle over 1,200 horsepower, making them suitable for the most demanding builds.

Whether you are building a dedicated circle track car, restoring a muscle car with factory-correct performance parts, or pushing an LS-swapped project to its limits, GM Performance Parts offers a direct line to the same technology trusted by professional racers for over half a century.