1971 Chevrolet Corvette Stingray ZR2 Convertible

One of the rarest big-block Stingrays was the 454 ZR2 produced in just 1971. Only 12 of these LS6-equipped cars were produced and they were the last of the fabled Z cars.

The ZR2 was similar in specification to the race-ready, all-aluminum ZL1 except it used the cast-iron 454 block with the open chamber aluminum cylinder heads, but still retained solid lifters and four-bolt main bearings.

A complete package, the ZR2 also used the J50/56 power heavy duty brakes, F41 heavy duty suspension, M22 “Rock-Crusher” 4-speed manual transmission, a dual plate clutch, stabilizer bars and a heavy duty aluminum radiator, all of which are shared with the race-ready ZL1.

Our feature car is only one of two ZR2 Convertibles produced. Painted in Ontario Orange it was first delivered to an American living in Germany with a long list of options: shoulder harnesses, auxiliary hardtop, 3.55 Positraction differential, A.I.R. smog controls, tinted glass, Rally wheels and Blackwall tires.

Later the Convertible was shipped back to the USA and lsubject to a body-off restoration. The result was shown as part of the exclusive 1999 Bloomington Gold Special Collection.

With all the relevant documentation, Mecum will offer this spectacular Corvette at their Kissimmee, Florida auction in January 27th.

Story by Richard Owen

In Detail

typeSeries Production Car
built atSt. Louis, Missouri, USA
production2
engineLS6 V8
positionFront Longitudinal
aspirationNatural
block materialCast Iron
valvetrainOHV, 2 Valves per Cyl
fuel feed850 CFM Holley 1 x 4 bbl. D.D.
displacement7440 cc / 454 in³
power316.9 kw / 425 bhp
specific output57.12 bhp per litre
bhp/weight274.02 bhp per tonne
torque644.0 nm / 475 ft lbs @ 4000 rpm
body / frameFibreglass over Steel Network Frame
driven wheelsRWD
front tiresFirestone 9.20×15
rear tiresFirestone 9.20×15
front brakesJ50/J56Upgraded Discs w/Special Proportioning Valve
rear brakesJ50/J56 Upgraded Discs w/Special Proportioning Valve
front wheelsF 38.1 x 17.8 cm / 15.0 x 7.0 in
rear wheelsR 38.1 x 17.8 cm / 15.0 x 7.0 in
steeringUnassisted Recirculating Ball
f suspensionShort Arms w/Heavy Duty Coil Springs, Heavy Duty Shocks
r suspensionIndependant Triple Link Arms w/Heavy Duty Transverse Leaf Spring & Lateral Link
curb weight1551 kg / 3419 lbs
wheelbase2489 mm / 98.0 in
front track1491 mm / 58.7 in
rear track1509 mm / 59.4 in
length4636 mm / 182.5 in
width1753 mm / 69.0 in
height1217 mm / 47.9 in
transmissionMuncie M-22 4-Speed Manual
gear ratios2.20:1, 1.64:1, 1.27:1, 1.00:1
final drive3.36:1
top speed~273.6 kph / 170.0 mph
0 – 1/4 mile~13.56 seconds