The 1968 Chevrolet Astro II (XP-880) was introduced at the 1968 New York Auto Show as a practical, personal sports car designed to carry two passengers and their luggage comfortably and rapidly. A hint of Astro I styling flavor is seen in the frontal appearance of this running experimental car, but unlike the Astro I, Astro II had doors to access the passenger compartment. The contours had been altered slightly to accommodate wide section tires, which promoted stability and handling and reflected the change in dimensions, resulting from adopting a mid-wheel base location for the engine.
The air-cooled, single overhead camshaft six-cylinder engine used in the Astro I was replaced with a liquid-cooled 390 horsepower MK IV big-block V8 engine, with power passing through a two-speed torque converter from a Pontiac Tempest transaxle. Unlike many European mid-engine vehicles, the Astro II carried its radiator at the rear, a location intended to minimize the amount of plumbing required and to keep the hot water lines from passing through the passenger compartment. This arrangement freed the front compartment for the storage of luggage. The sponson area on either side of the car behind the passenger compartment was available for extra storage, and a collapsible spare tire on the right. The rear section of the Astro II was raised aft of the passenger compartment immediately to allow access to the sponson storage areas and the engine and suspension. The Astro II has a wheelbase of 100 inches, an overall length of 181 inches, and a height of a mere 43.7 inches. The overall width is 74 inches.
Inside, driver and passenger were snug, surrounded by well-padded surfaces, which provided maximum lateral support, advantageous because of the high maneuverability of this vehicle. The instrumentation was normal, with 270 degrees sweep speedometer and an 8,000-RPM tachometer. The conventional complement of gauges included water temperature, air pressure, ammeter, and gasoline gauge. A sliding transmission selector replaces the usual lever.
Lead engineer Zora Arkus-Duntov and GM styling chief Bill Mitchell were hoping Astro II would be the concept for the next-generation Corvette. Still, the GM management figured the public was not ready for a mid-engine car.
The Astro II is currently part of the GM Heritage Center Collection.
In total, there were three Chevy Astro Concepts:
Source: Bill Bowman, wiki.gmnext.com
Images: Vintage Web, www.corvettefever.com; General Motors Archive