Mecum Auctions is at it once again. This weekend in Chicago, this rare 1969 Camaro ZL1 will cross the block. The car is documented as being #23 of 69 ZL1 Camaros covertly produced for that model year under the COPO program (COPO 9560AA). The engine was developed under Jim Hall's Chaparral Can Am team and was based on the L88 427 cubic-inch power plant. It is considered by many to be the ultimate development of the big-block Mark IV engine. Although sanctioning bodies had rejected Chevrolet's plans to qualify the ZL1 Camaro for racing in SS/C and SS/D competition, Chevrolet product manager Vince Piggins managed to sneak it through using the COPO program as a cover. Basically, the ZL1 is made almost entirely of aluminum (except for a forged steel crank, connecting rods, and camshaft) and weighs about the same as a typical small-block Chevy engine. It produces more than 550 horses, a steep rise from the factory rating of 430. The car up for new ownership is an original 9560AA Dusk Blue (Black bucket seat interior) 4-speed specimen, documented with a Fred Gibb Chevrolet Shipping Report, Protect-O-Plate and notarized affidavit from the original owner confirming his thirty-year ownership and the miles put on the car during that time. It has been restored by a noted COPO authority by the name of Barry Burstein of St. Louis, Missouri, and meets all original factory specifications. The COPO Connection has certified the ZL1, and the car has appeared at several Supercar Reunions and scored 995 out of 1000 points at the Classic Chevrolet Club meet. The beautiful ZL1 features such factory details as an M21 close ratio 4-speed manual transmission with Hurst shifter, power front disc brakes, color-keyed wheels with dog dish hubcaps, and Goodyear Wide Tread F70-14 Polyglas tires. It is scheduled to be auctioned this Saturday at 2:55 p.m. To learn more or to bid, visit www.mecum.com. By Stephanie Davies Enjoyed this Post? Subscribe to our RSS Feed, or use your favorite social media to recommend us to friends and colleagues!