Chevrolet Master Sport Coupe

Chevrolet’s new six-cylinder engine for 1929 was nothing short of phenomenal. It featured Chevy’s traditional overhead valves and excellent cooling that left it understressed. Steady improvement over the years resulted in extreme reliability, and the nickname “Cast Iron Wonder.” While sales leadership did not come immediately – Ford led the market through 1930 – by 1931 Chevrolet had become the industry champion, a title seldom relinquished in the ensuing years.

For 1934 Chevrolet heralded two important improvements. The Cast Iron Wonder featured improved lubrication and redesigned combustion chambers. Available only on the Master Series, it developed nearly twice the power of its predecessor with no increase in displacement. The other feature was Knee Action independent front suspension, an innovative design by Frenchman André Dubonnet that used oil-filled combination spring and shock absorber units.

This car was auctioned off by RM Auctions in January of 2009 at the Arizona Biltmore Resort & Spa, Phoenix, Arizona.

80bhp, 206.8 cu. in. overhead valve inline six-cylinder engine with three-speed manual transmission, front suspension via independent Dubonnet-type Knee Action and rear suspension via semi-elliptic leaf springs, live rear axle, four-wheel mechanical drum brakes. Wheelbase: 112"

Source: RM Auctions
Photo Credit: Copyright Darin Schnabel

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