The American V8. Part Three: The Chevy Small Block.

The popularity of the Oldsmobile 88 and the “OHV” V8, helped to push General Motors as the number one name in performance in the USA, but that wasn’t enough, GM had broader plans for those engines. The idea was to maximize the profits as much as possible, making the V8 even more affordable. GM quickly transferred the “OHV” technology to its most popular brand: Chevrolet.

This image has an empty alt attribute; its file name is 1955_chevrolet_bel_air_1553863722b276f7ebd598f3c19c92-e1553863765846.jpg
The 1955 Chevrolet Bel Air convertible.

Chevy V8, Power to the People.

In 1955 Chevrolet unveiled its all-new automobile line up: the Model “150”, the “210” and the top of line, the Bel Air; all of them equipped with the optional 265CID “OHV” V8, cranking 160HP. Chevy also made available the “Super Power Pack” V8, with 190HP, for those who wanted a little more punch under the hood.

The combination of the sleek design and the power of the V8 made the new Chevy a smashing hit and a turning point for the company. That year alone, Chevrolet sold 250.000 more cars than Ford.

1957 Chevrolet Bel Air Fuel Injection Sport Coupe (2454-1037D) | Chevrolet bel  air, 1957 chevrolet, Chevrolet
The gorgeous 1957 Chevy 2 doors “hardtop”, equipped with the Rochester mechanical Fuel Injection Small Block V8. One of the best example of early days Muscle Car.

The company repeated the recipe for the next 2 years, making the Chevys from 1955, 56, and 57 instant classics and propelled the popularity of the Small Block V8 for years to come.

Saving the Corvette.

June 30, 1953: Corvette Adds Some Fiber, Flair to American Road | WIRED
Corvette assembly line, 1953

The Corvette was released in 1953 and its mission was to compete with the British roadsters that were invading the American market at the time. It was equipped with a 150 HP, in-line 6 engine and a two-speed automatic transmission, in other words, the car had the looks of a sports car, but was far from performing like one. The Corvette became a disaster in sales and Chevrolet was ready to axe the car after only 2 years of production.

1955 Corvette V8

One of the Corvette’s chief engineers, Zora Arkus-Duntov, insisted that the car deserved a second chance but with something more spicy under the hood. Duntov’s request was finally heard and in June, 1955, the 265CID V8 Corvette hit the showrooms across the USA. To make things even better, a 4-speed manual transmission was made available as well.

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Corvettes at the 1960 edition of the 24 Hours of Le Mans.

Sales were picking up thanks to this new combo, but Chevy decided to go even further, in 1957 the car received a 283CID with 10,5: 1 compression ratio that could have been optionally equipped with a Rochester mechanical fuel injection. With this combination, the Corvette reached a new milestone: 1HP per cubic inch, proving how efficient the small block can be. Chevrolet also provided lots of “race-ready” components like brakes, shocks, clutch, and so on, making the little Chevy a superb sports car.

The small block V8 gave the Corvette the necessary boost in sales and also made the car unbeatable at the race tracks. It was only in the early 60s that Carol Shelby, in partnership with the British A/C and Ford, came up with a car that could face the Corvette in equal terms: the Shelby Cobra.

Sebring 1964 - Ken Miles' Cobra vs A.J. Foyt's Corvette by Nigel  Smuckatelli, via Flickr | Ken miles, Ac cobra, Sebring
Chevy Corvette vs Shelby Cobra.

The Horse Power war between the American automakers had officially began

The most popular engine in History.

1969 Chevrolet Camaro 350 4-Speed for sale on BaT Auctions - closed on May  29, 2019 (Lot #19,300) | Bring a Trailer
1969 Camaro SS, equipped with the 350 CID Small Block Chevy.

Throughout the next decades, the Chevrolet V8 engines would not only power the company’s high-performance cars but also the less glamorous cars and trucks. Those engines were also extensively used in the marine industry, powering boats and on a much smaller scale, they even powered airplanes.

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A Big Block Chevy V8 powered “racing” aircraft.

Chevrolet produced the “OHV” V8s in a variety of sizes, from the small block 265CID (4.3 liters) to big block 454 CID (7.5 liters) but was the 350CID that became legendary. Cheap, reliable, and pretty easy to squeeze lots of horsepower out of it.

A 1970 Chevy Nova, showing all the torque a 350 can provide.

The 350 Chevy became the engine of choice for the blue-collar Hot Rodders for decades, not only during the Golden Age of American High-Performance in the 1960s but also during those terrible years of the oil crisis in the 1970s/80s.

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1982 Pontiac Trans Am, powered by the 350 Chevy Small Block.

In the beginning of the 1980s, in order to optimize production, meet emission standards, and cut costs, General Motors decided for all its “satellite” brands (Buick, Cadillac, Oldsmobile, and Pontiac) to stop the production of their own V8s and adopting the “corporate” Chevrolet “small block” V8 instead.

1970 Chevrolet Monte Carlo Assembly Line | Vintage muscle cars, Chevrolet  monte carlo, Chevy muscle cars
Another V8 powered Chevrolet is almost ready to hit the road. A beautiful 2 tone, 1970 Monte Carlo.

General Motors phased out the “classic” small block from its vehicles in the late 1990s, replacing it with the “LS” V8 family, but they kept the legendary 350CID V8 in production as “replacement part” for the millions of vehicles that are still on the roads powered by this venerable engine.

A 1964 Chevelle receives a brand new “350”. (Photo courtesy:

Chevrolet estimates that over 100 million small blocks were produced since 1955, making it the most successful engine in the history of the auto industry.

In the last post of this series, I will talk about the most legendary of the American V8s: the Chrysler HEMI.


Published by Rubens Junior

Passionate about classic cars, motorcycles, airplanes, and watches.

4 thoughts on “The American V8. Part Three: The Chevy Small Block.

  1. That’s a 1st-gen Chevelle, 1964 / 65, NOT a 1964 Impala.
    The “small-block” ranged in size from 262 – 400. The Mark IV, though OHV, totally different beast, and incorporated not only the gen-1 but also the W-Motor 348-408-427 architecture. Oh, and the W-motor is not called “W” because the valve covers look like upside down “W”s, it was an actual engine program, one of many to resolve issues with usingthe emall V8 in trucking, heavy-duty usage.


    1. Yes, thank you, you are absolutely right, the car is a 1964/65 Chevelle, and you are also right about the origin of the “W” nickname. Actually, if the valve cover was the reason for the name, the engine should be called “M”.


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