The Corvette Z06, generation by generation

Corvette Z06 history

The Z06 began in 1963 as an optional Special Equipment Package intended for racers. Chevrolet describes it as a stiffer suspension, heavy-duty brakes, a thicker front stabilizer bar and a large 36-gallon fuel tank, with the fuel-injected 327 V8 and a close-ratio four-speed manual required. Secondary references put production of those original cars at 199.

The name returned for 2001 on the fifth-generation Corvette's fixed-roof hardtop body, with the LS6 V8 rated at 385 hp and then 405 hp. The C6 Z06 of 2006–2013 used the 7.0-liter LS7, rated at 505 hp, and the C7 Z06 of 2015–2019 added a supercharger to the 6.2-liter LT4 for 650 hp.

The mid-engine C8 Z06 arrived for 2023 with the 5.5-liter LT6, a dual-overhead-cam V8 with a flat-plane crankshaft, hand-assembled at the Performance Build Center at Bowling Green. Chevrolet rates it at 670 hp and calls it the most powerful naturally aspirated V8 ever offered in a production car; its chassis underpinned the C8.R race car from 2020.[1],[2],[3]

Years and production numbers

Generations and key variants

Engine and drivetrain facts

• The C8 Z06's LT6 uses a flat-plane crankshaft and revs to 8,600 rpm; Chevrolet rates it at 670 hp at 8,400 rpm and 460 lb-ft at 6,300 rpm (SAE J1349).
• The LT6 is hand-assembled by master engine builders at the Performance Build Center inside the Bowling Green Assembly Plant in Kentucky.
• The LT6 shares its basic architecture with the twin-turbo LT7 in the current ZR1, and Chevrolet's 2027 lineup still lists the Z06 at 670 hp.
• The available C8 Z07 performance package produces 734 pounds of downforce at 186 mph, according to Chevrolet.

Sources:[1],[2],[5]

What changed, generation by generation

1. 1963Z06 Special Equipment Package for racers on the new Sting Ray: stiffer suspension, heavy-duty brakes, 36-gallon tank.
2. 2001Name returns on the C5 hardtop with the 385 hp LS6.
3. 2002C5 Z06 rises to 405 hp.
4. 2006C6 Z06 with the 505 hp 7.0-liter LS7.
5. 2015C7 Z06 with the supercharged 650 hp LT4 and an available automatic.
6. 2023Mid-engine C8 Z06 with the 670 hp LT6 flat-plane-crank V8; production began in summer 2022.

Sources:[1]

What to check before you buy one

• Know which generation you are looking at: each Z06 uses a different engine, and the C8 is mid-engine with a dual-clutch transmission only.
• On a C6 Z06, ask for records of any cylinder-head or valvetrain inspection or work on the LS7.
• On a C7 Z06, ask how the car was used on track and check the cooling system and brakes.
• Confirm C8 Z06 options such as the Z07 package and carbon-fiber wheels with the factory build record; they add significantly to the price.
• Run the VIN through NHTSA's recall lookup (nhtsa.gov/recalls) and confirm that open campaigns and software updates have been completed.

Engine guides: LS7 7.0L V8, LT4 supercharged 6.2L V8.

How to verify a Corvette Z06's factory options

A Z06's value depends heavily on its options, especially the Z07 package on the C7 and C8. The factory build record can confirm which option packages a 2001-or-later Z06 was ordered with. GM's build data lists the ordered-option RPO codes for the VIN, not every code on the car's original equipment label, and coverage varies by car.

Standardized 17-character VINs began with the 1981 model year, so the original 1963 Z06 cars predate them; every Z06 from 2001 on has one.[6],[7]

For pre-1981 cars, the body (trim) tag and engine stampings carry the original factory codes, and the GM Heritage Center publishes vehicle information kits for many past GM models.