How GM Marked the 100-Millionth Small-Block With the LS9
GM Builds 100 Millionth Small-Block: The Supercharged LS9
A Major Milestone for GM
On November 29, 2011, GM reached a major moment in its history. The company built its 100 millionth small-block Chevy engine. In fact, this was an important achievement because the small-block has powered American cars for generations. In fact, it is also one of the most successful engines ever created.
GM marked the event with a bold choice. The company selected the 638-horsepower LS9, the heart of the C6 ZR1 Corvette, to serve as engine number 100 million.
The First Factory Supercharged Corvette
The LS9 holds a special place in Corvette history. It became the first factory-built supercharged Corvette engine. Earlier cars, such as the Callaway B2K turbocharged C4 Corvette, used forced induction. However, Callaway installed those systems outside the factory. The LS9 arrived fully engineered and built by GM, and therefore set a new standard.
In addition, the LS9 showed how refined the LS-series engines had become. Since 1997, the LS line has earned a reputation for clean design, strong durability, and impressive performance. The LS9 brought all of those traits together in one remarkable package.
Equally important, the Small-Block Story Begins Earlier Than Many Think
Most importantly, the small-block Chevy story stretches back more than 70 years. Its roots reach into the 1949 Cadillac 331 OHV V8. GM began early work on that engine in the late 1930s. When World War II started, the company stopped the program to build war material. After the war, GM returned to the project and, by 1946, produced a running prototype.
Ed Cole Creates the 265 Small-Block
Ed Cole led the Cadillac 331 effort. His success earned him the role of Chevrolet Chief of Engineering in 1951. Soon after, he began a new assignment. Cole needed to create a smaller, lighter, and simpler V8 for Chevrolet. As a result, the 1955 265-ci small-block came to life. It quickly reshaped the American performance world.
Racing Helps Lift the Small-Block
Cole may not have aimed the 265 directly at racing. However, many talented engineers and racers saw its potential. Inside GM, Zora Arkus-Duntov and Mauri Rose pushed the engine hard. Outside the company, Smokey Yunick and other clever mechanics improved it even further. Their combined effort helped turn the small-block into a racing legend.
From Gen-I to the Modern LS Engines
The Gen-I and Gen-II small-blocks reached their peak in 1996 with the LT4. GM rated it at 330 horsepower, yet many engines made much more. The next year, GM launched the all-aluminum LS series, which continued to evolve. In fact, later versions grew even stronger. By 2025, the most powerful LS-based engine appeared in the C8 ZR1, producing 1,064 horsepower.
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The Most Successful American V8
Detroit has produced many great engines. Notably, the Small-Block Chevy stands above the rest. It remains the most successful American performance engine ever built. Furthermore, it continues to power both street cars and race cars with unmatched influence. – Scott
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