A very creative gentleman from Wisconsin has crammed an LS4 V8 in the back of a Geo Metro and made it completely functional.

There are plenty of high-powered, performance-oriented LS engines out there. But what about the LS4? How powerful is that particular iteration?

General Motors introduced the LS4 engine in 2004, but what cars had it under the hood? Here are the models and how much horsepower it produced.

The LS4 V8 has 303 hp and 329 lb-ft of torque as standard. As with other LS engines, it was made by General Motors and used in the automaker's cars.