Lot 9
1970 Chevrolet Corvette ZR1

gallery


Selling on Wednesday

CHASSIS NO: 194370S405190

• 1 of only 25 1970 model ZR1 optioned Corvettes produced
• Numbers matching engine and factory M22 “Rock Crusher” four-speed transmission
• Documented in ZR1 Corvette Registry and NCRS
• Includes original window sticker, Protect-O-Plate and owner’s manual
• High-quality comprehensive restoration


350 cid LT1 OHV V-8 engine, single Holley 780 CFM four-barrel carburetor, 370 HP, four-speed M22 “Rock Crusher” manual transmission, four-wheel power-assisted disc brakes, independent front suspension with A-arms and coil springs, independent rear suspension with lateral struts, radius rods, and transverse leaf spring; wheelbase: 98”


In 1970, Chevrolet introduced a limited production radio-delete car to the racing world. Named the ZR1, it was based on the name of its RPO package. This successor to the L88 Corvette came equipped with a high-performance small block and all the specialty options that were found on the L88s that were retired the previous year. The car, which could be ordered as Regular Production Option (RPO) ZR1, came equipped with a new, solid-lifter, small-block engine that GM designated the LT1. The LT1 engine, which was manufactured by GM from 1970 to 1972, was a 350 cubic-inch small block that produced 370 horsepower. It featured 11:1 compression, a ‘178’ high-performance camshaft and a 780 CFM Holley four-barrel carburetor mounted to a special aluminum intake. Although not as powerful as the L88, the LT1 engine offered consumers an exciting and powerful engine platform that would perform superbly on the racetrack.

In addition to the LT1 engine, Corvettes ordered with RPO ZR1 came equipped with the M22 “Rock Crusher” transmission, heavy-duty power brakes with dual-pin front brake calipers (J56), a transistor ignition, a special aluminum radiator and a heavier-duty suspension package that included bolstered seven-leaf rear springs, shocks and heavy-duty 5/8 inch front sway bars and rear spindle struts/stabilizer bars. The car also came equipped with metal fan shrouds. Additionally, when ordering a ZR1, the following options were not available, including the rear window defroster (C50), air-conditioning (C60), power steering (N40), deluxe wheel covers (P02), the alarm system (UA6), AM/FM radio (U69) and AM/FM radio, stereo (U79). The deletion of these items was intentionally designed to help reduce the car’s overall weight as well as to reduce the power load put on the engine, thereby ensuring that more power was transferred from the engine, through the transmission and to the rear wheels. In fact, it was impossible to order the ZR1 with any of the “creature comforts” synonymous with the more conventional Corvettes being offered by Chevrolet dealers across the nation. Although it was more competitively priced than many of the other high-performance Corvettes from that era (the 1969 Corvette ZL1 for example), the 1970 Corvette ZR1 still struggled to make a connection with most consumers. The car was well-received, but GM had created a culture of “sticker shock” with its high-end variants, and this was no different with the ZR1. Interestingly, the cost of adding the ZR1 option to the 1970 Corvette was just $968.95 when it was initially being sold to the public by Chevrolet. Despite this, just 25 ZR1 equipped Corvettes were sold in 1970.

This exceptional Marlboro Maroon 1970 Corvette was delivered new to Sharpnack Chevrolet in Vermilion, Ohio. It has received a comprehensive restoration and has been fitted with tubular exhaust headers and side pipes to enhance performance. These are Baldwin Motion headers and side pipes, and there is a receipt in the records from Baldwin Motion (the original exhaust manifolds accompany the car). This car is believed to be the only 1970 ZR1 Corvette built with a 3:08 rear differential from the factory. Accompanying the car is its original window sticker, Protect-O-Plate and owner’s manual, as well as Corvette Registry paperwork and NCRS verification to further authenticate this very rare Corvette. It has its numbers matching engine and Muncie four-speed transmission, making it highly coveted amongst all its muscle car brethren. 1970 ZR1 cars are seldom offered for sale, presenting a rare opportunity to acquire a very desirable and highly sought-after Corvette.