Unless you're into model cars (like, really into them) you may not have heard of Conley Precision Engines. That's a shame. Why? Because they build the Stinger 609, the world's smallest supercharged four-stroke V-8 engine, which has finally entered production. At just 6.09 cubic inches (hence the name), or nearly 100 cc, it's a very small displacement V-8. Despite the small displacement, the engine revs to 10,000 rpm and produces 9 horsepower.