Dedicated to the Promotion and Preservation of American Muscle Cars, Dealer built Supercars and COPO cars. |
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#1
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There were 10 ZL1's ordered with Rally Wheels.
The 3 cars that were "double" COPO's came standard with them as part of the Sports Car Conversion. These were the #3, #65 & #69 cars. The COPO 9737 included 15x7 Rallys. The others were cars #51, 53, 58, 59, 64, 66, and 68. They had RPO 5ZJ7 14x7" Rallys added to the build order. (COPO Source Book by Ed Cunneen Ret.) ![]()
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![]() COPO 9561/9737 M40 X11D80 13.37 @ 105.50 on pump gas,drove it to NATL TRAILS and back [email protected] SCR22 |
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#2
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Interesting stuff! I wonder how GM calibrated the speedometer for different size wheels and tires?
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