1985 Corvette Z51 5.7L V8 4-Speed Manual Transmission Transparent Targa Roof 85

RPO Codes:AG9 Power Driver Seat (AG9) - Optional, six-way, adjustable driver seatAU3 Power Door Locks (AU3) - Electronic locking systemCC3 Removable Transparent Roof Panel (CC3) - Single piece, glass roof panel that gives driver an "open air" feel while driving.FG3 Delco-Belstein Shock Absorbers (FG3) - Gas shock absorbers with valving revised for improved ride.K34 Cruise Control (K34) - Automatic electric cruise control with "resume" and "accelerate" options.L98 5.7 Liter, 350CI Engine with Tuned-Port Injection4-Speed Manual Transmission (MM4) - Optional manual transmission that was offered as a zero dollar upgrade.
a "4+3", 4 speed manual transmission that was originally developed and built by Doug Nash Company.
The "4+3" transmission had overdrives in the top three gears for improved fuel economy.
In 1985, the 4+3 Manual Transmission came with a new, heavy duty 8.5 inch ring differential.
The manual transmission overdrive selector button was moved from the console to the shift knob itself.
Rear axle gear ratios for manual transmission models was 3.07:1.UU8 Stereo System, Delco-Bose (UU8) - Delco Bose AM/FM stereo radio with cassette.V08 Heavy Duty Cooling (V08) - Optional, three (3) core aluminum radiator.
Includes larger diameter transmission cooler.
Z51 Performance Handling Package (Z51) - Heavy Duty Steering and Suspension Upgrade for Improved Handling.
Included heavy-duty front and rear springs, shock absorbers, stabilizer bars and bushings, fast steering ratio, engine oil cooler, extra radiator fan (pusher), P255 / 50VR16 tires and directional alloy wheels (16 x 8.5 (front) and 16 x 9.5 (rear)).
Suspension rates were lowered in 1985 as a result of harsh ride criticisms from the previous model year. Springs for the base suspension were softer by 26% in front and 25% in the rear. Springs included in the Z51 option were 16% softer in the front and 25% softer in the rear.
To compensate for the spring change, larger diameter stabilizer bars were included with Z51 equipped models.Z6A Rear Window + Side Mirror Defoggers (Z6A) - Components were equipped with heating elements (wire) for defogging.
Base/Clear Coat WA- L7719 U7719