1984 SPEEDO GEAR USAGE CHART X CAR C0nt1nued D D A w R G R G D I E I E A V A V A P TIRE SIZE AXLE TRANS E R E R T N R PM B 13 Km pzowm 3 65 M19 na NOTE 75 1ST DESIGN HAS PLASTIC DRIVEN GEAR SHAFT 76 2ND DESIGN HAS STEEL DRIVEN GEAR SHAFT T 1991 GENERAL MOTORS SERVICE PARTS OPERATIONS CHEVROLET 17W 4 337 4 170 6 91