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


General Motors (GM) has unveiled its largest and most powerful crate engine to date – a mammoth 1,000 horsepower, 632 cubic-inch powerhouse. This ground-breaking engine is set to revolutionize the world of performance engines and raises the stakes for competitors. In this article, we will discuss the specs of this formidable engine and its potential applications.

The Engine:

GM’s latest crate engine comes in the form of a naturally-aspirated 632 cubic-inch (10.4-liter) V8 monster that pumps out an impressive 1,000 horsepower and 876 lb-ft of torque. The engine uses a cast iron block with an aluminum head, ensuring strength and durability while keeping weight manageable. Its 4.6-inch bore and long 4.75-inch stroke make it an absolute torque monster.

Key Features:

Some notable features of the GM’sZZ632/1000 (the official name for its new behemoth) include:

– High-flow rectangular port cylinder heads made from aluminum.

– A high-lift solid roller camshaft

– Forged steel crankshaft and H-beam connecting rods

– Custom high-performance aluminum pistons with a premium ring package

– A high-rise single-plane intake manifold topped with a Dominator-style carburetor

Potential Applications:

With such impressive power output, GM’s new crate engine has various potential applications within the automotive industry. These range from high-performance classic muscle cars to the fast-rising world of resto-mods – where iconic vintage cars are upgraded with modern components for increased performance and reliability.

Another apparent application would be in competition drag racing or even land-speed record attempts where enormous amounts of torque and raw power are required to propel vehicles down the quarter-mile or across salt flats at breakneck speeds.


The introduction of GM’s largest and most powerful crate engine to date has made waves in the automotive world. Its impressive power and torque output make it an ideal candidate for an array of high-performance applications. Time will tell how this new engine revolutionizes the performance landscape but, for now, it continues to stand as a testament to GM’s engineering prowess and commitment to pushing the boundaries of internal combustion engine design.