1963 Chevrolet Impala Z11 Lightweight Is Today's Bring a Trailer Auction Pick
The Z11 option package was a one-year-only offering that brought aluminum body panels and other weight-saving features.
It's believed that 57 full-size '63 Chevys were so equipped.
This example was originally campaigned by drag racer Terry Prince.
This 1963 Impala is one of the most muscular full-size Chevys ever made, rare and bristling with aggression. In period, it rolled up to the Christmas tree and then blitzed down the dragstrip, angry dinosaur noises roaring out of its 427-cubic-inch big-block V-8. Now, this rare Impala is up for auction on Bring a Trailer, which like Car and Driver, is part of Hearst Autos.
The early 1960s were a golden age for drag racing, and Chevrolet's executives wanted to beat Ford. For 1963, they introduced a special-order option package, Regular Production Order (RPO) code Z11, which bestowed Chevrolet's full-size Impala with something very special. It was an astronomically expensive option—at $1240, it added almost a third to the price of the car—and buyers got less for their money. Specifically, the radio, heater, and front sway bar were deleted. Many steel parts were replaced with aluminum, for a total weight savings of around 300 pounds.
Chevy had introduced the Super Sport (SS) option in 1961, with a 409-cubic-inch V-8 good for around 360 horsepower. For the Z11, that engine was punched up to 427 cubic inches, fitted with 13.5:1 compression pistons, and crowned with a high-rise intake and twin four-barrel carbs. The factory rating was 430 horsepower and 575 pound-feet of torque. The manual transmission was a four-speed BorgWarner T-10. Power is sent rearward to a 4.11:1 Positraction rear axle.
This example was bought new by Terry Prince, whose name it wears on its flanks. Prince ran the performance shop at Service Chevrolet in Pasadena, California, and ordered it specially. He competed in the 1963 NHRA Winternationals, and through the rest of the year. The car is accompanied by photos of the Impala in competition, as well as the original purchase order for $4102.32. The car was restored from a dissembled state in the late 1990s.
Get your footwork right and this big red sled would scoot to 60 mph in 4.3 seconds and flash through the quarter-mile traps at over 120 mph. A ferocious beast from a long-ago age, this Chevy has no seatbelts, drum brakes, and firepower like the USS Missouri. It's a holy grail for Impala enthusiasts. The auction runs through June 17.
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