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#1
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From CRG
The COPO 9560/9561 cars started with a SS396 big-block chassis that included: Rear Brake Proportioning Valve Big Block Heater Core Big Block Fuel Line The price of the COPO 9560/9561 High Performance Units included the following: Either ZL1 (9560) or L72 (9561) engine Dual exhaust (both standard N10 and NC8 chambered have been noted) ZL2 cowl induction hood Transistorized ignition (9560 only) HD (curved-neck) 4-row core 23" radiator (most) F62 HD front springs G32 HD rear five-leaf springs HD version of the 4.10 or 4.56 ratio 8.875-inch 12-bolt rear axle G80 positraction To this was added the following mandatory equipment: J52 Power Front Disc Brakes Either Muncie M21 or M22 4-speeds, or THM400 automatic PL5 F70x14 white letter tires on 14x7 wheels (or equivalent substitute option) |
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#2
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Just to tune this up a bit:
A few COPOs were built with the M20 wide-ratio 4-speed. Virtually all had 4.10:1 BE axles. One is documented as special ordered with COPO 9511 4.56:1. COPOs built through June '69 do not list positration on their docs as it was initially part of the COPO. On later builds G80 & G84 became required options for $56.90 & $2.15 and included HD cooling. Only COPOs 9560 & 9561 could be ordered with COPO 9737. It included the 140 mph speedo, 15 x 7 rally wheels, HD front stabilizer bar. Around June '69 the price was increased to include a factory tach.
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