When you look around the automotive world, it's clear to see that hot rodding and V-8 engines are distinctly American creations. Sure, you can find a smattering of V-8s and/or hot rodders in pockets around the globe, but the United States is the home office for both. Where you find bent eights, you'll find hot rodders, and vice versa. The two enable each other.

It was the wide availability of low-cost, high-potential V-8s that democratized horsepower, placing it in the hands of the many.

There was hot rodding in America before the V-8 arrived, sure, but with inline-fours and sixes the movement barely lifted off the ground. It was the wide availability of low-cost, high-potential V-8s that democratized horsepower, placing it in the hands of the many. Hot rodders created a sport, an industry, a way of life around the American V-8-for just one example, check out the Engine Masters Challenge coverage in this issue. Here are 10 engines that helped to build this thing we call hot rodding.

Flathead Ford

In the summer of 1929, Henry Ford handpicked a small group of engineers and machinists from the main engineering building on Oakwood Avenue and moved them into the Edison laboratory in Greenfield Village. There, in secrecy, they developed the '32 Ford L-head V-8. The first engines developed 65 hp from 221 ci, and soon improved to 85 hp with a twin-throat carburetor and dual-plane intake manifold replacing the original one-barrel.

Contrary to current belief, the Ford flathead wasn't the first American V-8. But it was the first affordable one, and the first with real performance potential. Millions were produced between 1932 and 1953, giving racers unlimited raw material and bootstrapping the sport of hot rodding on the streets, the dirt tracks, and the dry lakes.

Chrysler First-Gen Hemi

...big valves and straight, round ports produced an engine with breathing capacity like few others...

When the Chrysler Hemi V-8 was introduced in 1951, its displacement was 331 ci, identical to the Cadillac. Coincidence, or a shot across Cadillac's bow? Chrysler's engineering staff went Cadillac one better in the compression wars, devising a hemispherical combustion chamber that could run on regular gasoline.

Meanwhile, big valves and straight, round ports produced an engine with breathing capacity like few others, and the stout bottom end could withstand big blower boost and massive loads of nitromethane. Dodge and DeSoto offered their own versions of the Hemi, and Chrysler products finally slipped their reputations as old man's cars, that of being well engineered but stodgy. The hot rodding world had taken notice.

Cadillac OHV

One important technological spinoff from World War II that's often overlooked today: low-cost, high-octane gasoline. New refinery processes developed for aviation fuel made higher compression ratios possible. After the war, Cadillac recognized the potential for passenger cars and introduced the first overhead-valve, high-compression OHV V-8 in mass production, with sister GM division Oldsmobile trailing a half step behind.

Sports car racer Briggs Cunningham took two brand-new Cadillac V-8s to Le Mans, creating an international splash. Engine-swapping hot rodders seized onto the 331ci V-8 and built Caddy-powered Fords, known as Fordillacs, and Cadillac/Studebaker mash-ups they called Studillacs. Hot rodding's overhead-valve era had begun.

Small-Block Chevy

GM started the OHV V-8 revolution with the '49 Cadillac, then took it to the next level with the '55 Chevrolet. Cheaper and lighter yet demonstrably superior to the Caddy, the Chevy used a novel green-sand casting process that required only nine block cores to the Cadillac's 22. The method was created by John Dolza, an Italian immigrant and mechanical genius who was also the mind behind the Corvette's Rochester fuel injection.

The small-block, as it became known, also featured a cheap, stamped rocker arm setup that didn't look like it could even hold together, but it was actually light and strong, allowing the Chevy to rev to new heights for a pushrod V-8. Today, no longer cutting edge but still first in the hearts of enthusiasts, the small-block Chevy V-8 remains the most popular engine in hot rodding-by far.

Ford FE

Introduced in 1958 in a dinky 332ci version, the Ford FE V-8 eventually grew to 352, 390, 406, and 427 ci, serving as the flagship engine in Ford's global "Total Performance" program of the 1960s. There it saw successful duty around the world in NASCAR, drag racing, and even in the 24 Hours of Le Mans, where it humiliated the exotic four-cam V-12 Ferraris in 1966 and 1967.

Ford even developed an overhead-cam, Hemi version of the FE, the legendary 427 SOHC. When NASCAR turned thumbs-down on the SOHC program, Ford transplanted the engine to drag racing, where it won in FX, Funny Cars, and even Top Fuel. SOHC fuelers were campaigned by luminaries including Don Prudhomme, Connie Kalitta, and the team of Ed Pink and Tom McEwen, shown here.