SPEEDOMETER GEAR CHARTS V72 1975 77 CORVETTE 4 SPD TIRE 3 08 RATIO 3 36 RATIO 3 56 RATIO 3 70 RATIO 4 11 RATIO SIZE DRIVE GEAR DRIVE GEAR DRIVE GEAR DRIVE GEAR DRIVE GEAR 361002 361002 361002 361002 361002 GR 70 15 Driven A Driven B Driven A Driven C Driven D Adapter E Adapter E Adapter E Adapter E Adapter E 36 7002 is a second design drive gear identified by speedc adapter 6260705 is the lst design DRIVEN SLEEVE CODE GEAR TEETH COLOR ASM CODE ADAPTER A 3987919 19 Natural 345215 E B 3987918 18 Brown 345215 C 3987920 20 Blue 345215 D 3987922 22 Silver 345215 r WAREHOUSlNG AND DISTRIBUTION DIVISION OF GENERAL MOTORS CORPOR TION CHEVROLET 14 4 000 GROUP 4 6 c REV 5 81