1966 75 REGULAR PRODUCTION OPTIONS RPO Cont d RPO DESCRIPTION RPO DESCRIPTION G34 Rear Spring R H K24 Closed Engine Positive Ventilation G66 Air Booster Rear Shock Absorber K30 Speed and Cruise Control G67 Rear Shock Absorber Level Control K45 Air Cleaner Oil Bath Type 1 Lb Capacity G75 Rear Axle 3 70 Ratio K46 Air Cleaner Heavy Duty Pre Cleaner G76 Rear Axle 3 36 Ratio K47 Air Cleaner Oil Bath Pre Cleaner G80 Rear Axle Positraction K66 Transistor Ignition G81 Differential Carrier Positraction K76 61 Amp Generator Delcotron G91 Differential Carrier 3 08 Ratio K77 55 Amp Generator G92 Rear Axle 3 08 Ratio K79 42 Amp Generator Delcotron G93 Differential Carrier 3 27 Ratio K8I 62 Amp Generator Delcotron G94 Rear Axle 3 31 Ratio K84 Amp Generator Delcotron G95 Differential Carrier 3 55 Ratio K85 63 Amp Generator Delcotron G96 Rear Axle 3 55 Ratio K89 Reactor Catalytic Converter G97 Rear Axle 2 37 Ratio KD5 Heavy Duty Closed Position Ventilation GH2 Rear Axle 2 29 1 KK6 Air Injection Reactor GM8 Rear Axle 2 56 Ratio L11 L4 Engine 170 Cu ln OHC Alum GR3 Rear Axle and Multi Leaf Suspension Conversion 2 Bbl Carb For Export CKD Canada L13 L4 Engine 140 Cu ln OHC Alum GS1 Rear Axle 2 73 Ratio Std 1 Bbl Carb GS2 Rear Axle 3 08 Ratio L14 V8 Engine 307 Cu ln Standard GS3 Rear Axle 3 73 Ratio L22 L 6 Engine 250 Cu Inch GS4 Differential Carrier 3 70 Ratio Positraction L26 L 6 Engine 230 Cu ln GS5 Differential Carrier 4 11 Ratio L30 V 8 Engine 327 Cu In GS6 Differential Carrier 4 56 Ratio Positraction L34 V 8 Engine 396 Cu ln Hi Perf GS8 Rear Axle 3 42 Ratio L35 V 8 Engine 396 Cu In GS9 Rear Axle 3 73 Ratio L36 V 8 Engine 427 Cu In Hi Perf GT1 Rear Axle 2 56 Ratio L46 V 8 Engine 350 Cu In GT2 Rear Axle 2 29 Ratio L48 V 8 Engine 350 Cu In GT4 Rear Axle 2 73 Ratio L62 P 6 Engine Hi Perf GT5 Rear Axle 4 10 Ratio L63 P 6 Engine Spec Hi Perf GT6 Rear Axle 3 42 Ratio L65 V 8 Engine 350 Cu ln 2 Bbl Carb GU2 Rear Axle 2 73 Ratio L66 V 8 Engine 396 Cu ln 2 Bbl Carb GU4 Rear Axle 3 08 Ratio L68 V 8 Engine 427 Cu In Hi Perf Tri Carb GU6 Rear Axle 3 42 Ratio L71 V8 Engine 427 Cu In Spec Hi Perf Tri Carb GV1 Differential Carrier 2 73 Ratio Positraction L72 V8 Engine 427 Cu In Spec Hi Perf GV2 Differential Carrier 3 08 Ratio L73 V8 Engine 396 Cu ln Spec Hi Perf GV3 Differential Carrier 3 08 Ratio L78 V 8 Engine 396 Cu ln Spec Hi Perf GV4 Differential Carrier 3 36 Ratio L79 V 8 Engine 327 Cu In LD Spec Hi Perf GV5 Differential Carrier 3 55 Ratio L82 V 8 Engine 350 Cu ln GV7 Differential Carrier 3 55 Ratio L85 L 6 Engine 250 Cu ln 4 Bbl Carburetor GV8 Differential Carrier 4 11 Ratio L87 P 6 Turbo Charged Engine GV9 Rear Axle 2 53 Ratio L88 V 8 Engine 427 Cu ln Heavy Duty GW2 Rear Axle 2 56 Ratio L89 Aluminum Cylinder Heads GW3 Rear Axle 2 56 Ratio L90 Low Compression Engine 6 Cyl Export GW4 Rear Axle 2 56 Ratio L92 Low Compression Engine V8 Export GW5 Rear Axle 2 73 Ratio LF6 V8 Engine 400 Cu ln 2 Bbl Carb LD GW7 Rear Axle 2 73 Ratio LF7 V 8 Engine 327 Cu ln 2 Bbl Carb Reg Fuel GW8 Rear Axle 4 10 Ratio LM1 V 8 Engine 350 Cu ln 4 Bbl Carb Reg Fuel GW9 Rear Axle 2 93 Ratio L08 Engine Emission Identification Chart GX1 Rear Axle 3 07 Ratio LS1 V 8 Engine 427 Cu ln 4 Bbl Carb Reg Fuel GX2 Rear Axle 3 07 Ratio LS3 V 8 Engine 400 Cu In 4 Bbl Carb GX5 Rear Axle 3 08 Ratio LS4 V 8 Engine 454 Cu ln 4 Bbl Carb GX9 Rear Axle 2 92 Ratio LS5 V 8 Engine 454 Cu In 4 Bbl Carb Hi Perf GY2 Rear Axle 3 31 Ratio LS6 V 8 Engine 454 Cu ln 4 Bbl Carb Spec Hi Perf GY4 Rear Axle 3 73 Ratio LS7 V 8 Engine 454 Cu IN 4 Bbl Heavy Duty GZ1 Rear Axle 3 08 Ratio LT1 V8 Engine 350 Cu ln Special High Performance GZ3 Rear Axle 3 08 Ratio LT4 V8 Engine 400 Cu ln 4 Bbl Carb GZ5 Rear Axle 3 42 Ratio LV1 V8 Engine 4 8 Litre GZ6 Rear Axle 3 42 Ratio LY3 122 C I D L 4 Engine H01 Rear Axle 3 07 Ratio M01 Heavy Duty Clutch H05 Rear Axle 3 73 Ratio M10 Transmission Overdrive J50 Vacuum Power Brake M11 Floor Shift Transmission Control J52 Disc Brakes Front M13 Heavy Duty 3 Speed Transmission J55 Heavy Duty Brakes M15 3 Speed Transmission J56 Heavy Duty Brake M20 4 Speed Transmission J61 Shoe and Drum Type Brake Disc Brakes M21 4 Speed Transmission Close Ratio Deleted M22 Heavy Duty 4 Speed Transmission J65 Metallic Brake Facing M35 Powerglide Transmission JL2 Disc Brake Front M38 38peed Automatic Transmission JL8 Disc Brakes Front and Rear M40 3 Speed Automatic Transmission K02 Fan Drive M55 Transmission Oil Cooler KD5 E Ql Blcvk Heater M75 5 Speed Transmission K19 Air Injection Reactor MB1 2 Speed Transmission Manual Shift K21 Engine CODIFOIISCI COITIDUSIIOTI SYSIEYTI MC D 3 Speed Transmission GM PARTS DIVISION GENERAL MOTORS CORPORATlON CHEVROLET 11 12