Chevrolet Camaro COPO

Camaro COPO at a glance

How the Central Office Production Order worked

In 1969 General Motors did not allow engines over 400 cu in in its intermediate and pony cars. The COPO system was meant for special orders that the normal option list did not cover, and performance dealers found it could carry a big-block too.

The route had been tested in 1968. Fred Gibb Chevrolet wanted L78 396 Novas with automatic gearboxes for NHRA stock-class racing, a combination Chevrolet did not offer. Vince Piggins, the Chevrolet man behind the Camaro Z28, had 50 such Novas built through COPO with the Turbo Hydra-Matic 400, enough to meet the NHRA production rule. For 1969, the last year of the first-generation Camaro, the same channel opened three numbers for 427 cars: 9560 and 9561 for the Camaro and 9562 for the Chevelle.

COPO 9561: the iron L72

The L72 had a cast-iron block and heads and was rated at 317 kW (425 hp) at 5,600 rpm and 624 Nm (460 lb-ft) at 4,000 rpm, SAE gross. About 1,000 Camaros were fitted with it in 1969. Yenko Chevrolet of Canonsburg, Pennsylvania, ordered 201 of them and sold them as the Yenko Camaro with its own badging and equipment. The rest went out through other Chevrolet dealers, so a 1969 COPO 427 Camaro is not automatically a Yenko.

For Chevrolet the order was a way to sell a 427 Camaro without listing one on the regular option sheet, which kept the car within the letter of the corporate rule.

COPO 9560: the aluminium ZL1

The ZL1 was the racing engine of the two. Its aluminium block and heads saved weight over the front axle, and it carried an 850 cfm Holley carburettor. Chevrolet rated it at 321 kW (430 hp) at 5,200 rpm and 610 Nm (450 lb-ft) at 4,400 rpm. Writing for RM Sotheby's, David Neuhardt estimates that it would show about 429 kW (575 hp) on a dynamometer with open headers.

The engine package alone cost US$4,160. One test car stickered at US$7,800, roughly twice the price of an L78 SS 396 coupe. High Performance Cars ran the quarter mile in 13.16 seconds at 110.21 mph, and in normal street use the car returned 5 to 7 mpg. Chevrolet built 69 ZL1 Camaros for 1969 plus two prototypes; 47 had four-speed manuals and 22 had automatics. Reputedly, 50 went to Fred Gibb and drag racer Dick Harrell of Kansas City, and the other 19 to various dealers.

For 1970 GM dropped its 400 cu in rule. Big-block options returned to the regular order forms, and the high-performance COPO Camaro had no further purpose. The ZL1 name came back in 2012 on the supercharged road-going Camaro ZL1, a different car with no COPO connection.

The factory COPO Camaro since 2012

Chevrolet revived the name for 2012 as the first purpose-built drag-racing version of the Camaro. It built 69 cars that year, the same number as the 1969 ZL1 run: 67 coupes and 2 convertibles. Of these, 43 had a naturally aspirated 427, 20 had a 327 with a 4.0-litre supercharger and 6 had a 327 with a 2.9-litre supercharger. The final 2012 car, an Inferno Orange convertible, was auctioned at Barrett-Jackson in Scottsdale in January 2013 for the American Heart Association.

The modern COPO is built for NHRA Stock and Super Stock eliminator racing. It is sold through US dealers without a title or VIN and is not legal on the road. Production was capped at 69 a year at first. From 2020 Chevrolet dropped the lottery for build slots and took orders first-come, first-served, according to Hagerty.

The 572 of 2022 was the first big-block in a Chevrolet COPO Camaro for nearly 50 years. It used a tall-deck iron block with four-bolt mains, Edelbrock aluminium heads and a Holley Hi-Ram intake. For 2023 Chevrolet added the ZZ632, the largest and most powerful engine Chevrolet Performance had made, and paired every engine with a three-speed TH400. A build slot required a US$15,000 deposit.

COPO Camaros today: provenance and rivals

A 1969 COPO car is valued for what the paperwork proves. With 69 ZL1s built and the L72 orders spread across many dealers, the original order and the engine are the core of any car's history, and auction houses list each car's ownership chain in detail. Copies of both are common, so a COPO claim without documents is only a claim.

The modern car competes in NHRA classes against the factory drag cars of other makers. Hagerty names Ford's Cobra Jet Mustang and Mopar's Drag Pak Challenger as its rivals. Racers have reportedly taken naturally aspirated 427 COPOs beyond 597 kW (800 hp), far above the official ratings.