GM’s 1,000 HP 632 Cubic-Inch Crate Engine: The Largest and Most Powerful Ever


General Motors (GM), the renowned American automotive manufacturer, has been pushing the boundaries of performance engineering for years. With the launch of their latest powerhouse, the 1,000 horsepower (HP) 632 cubic-inch crate engine, GM has once again made history. Not only is this engine the largest and most powerful crate engine GM has ever produced, but it also sets a new benchmark for the industry.

Unleashing The Beast: Key Features

The 1,000 HP, 632 cubic-inch crate engine is an engineering marvel that delivers incredible performance. Boasting a gigantic displacement of 10.4 litres, this big block engine is designed to power high-performance vehicles and drag racers. Some key features of this colossal machine include:

1. A Cutting-Edge Engine Block: The iron-block with a four-bolt main design provides a sturdy foundation for the massive power generated by this crate engine. Coupled with aluminum cylinder heads and forged internals, it ensures durability even under extreme loads.

2. High-Performance Camshaft: The custom-ground hydraulic roller camshaft optimizes airflow and ensures maximum performance across the entire RPM range. This camshaft contributes significantly to the incredible horsepower rating of this engine.

3. Precision Engineered Components: To handle the immense power output, GM has employed high-quality components such as forged pistons, a forged steel crankshaft, and high-strength connecting rods.

4. Massive Fuel Delivery System: Serving as the lifeblood of this powerful engine is a high-capacity fuel delivery system that ensures optimal performance in every situation.

5. Optimal Cooling System: Keeping temperatures under control is critical for an engine as powerful as the 632 cubic-inch monster. GM has designed an efficient cooling system that maintains safe operating temperatures even during intense racing conditions.

Performance and Applications

GM’s 1,000 HP, 632 cubic-inch crate engine delivers a whopping 1,000 hp at 6,800 RPM and produces 876 pound-feet of torque at 5,100 RPM. This incredible muscle is ideal for powering high-performance vehicles, such as hot rods, drag racers, and classic muscle cars. It’s also suitable for off-road applications and various motorsports disciplines.


The release of GM’s 1,000 HP, 632 cubic-inch crate engine has raised the bar in the world of performance engines. This colossal powerhouse stands as a testament to GM’s commitment to pushing the limits of engineering and offering unmatched performance. With unparalleled horsepower and torque outputs, this crate engine is perfect for those seeking the ultimate automotive adrenaline rush.