LS3 crate engines can cost between $7,000 to $13,000, depending on configuration. By default, they make 430 hp and 425 lb-ft of torque.

Determining which engine still in production is currently the oldest is no easy fact to discover because of the wide variety of engines. But we figured it out.

The GM 602 crate engine, also known as the CT350, makes 350 hp and 396 lb-ft of torque and sells for around $8,000 from ...