3 SPEED TRANSMISSION 1974 ALL w 3 SPD CODE GEAR TEETH COLOR ADAPTER ASM E E SL E A 3987920 20 Blue F 3950354 H 345215 B 3987921 21 Red G 326569 I C 3987922 22 Silver D 3987919 19 Natural E 3987918 18 Brown 3 08 RATIO 3 42 RATIO TIRE DRIVE GEAR DRIVE GEAR SIZE 6261794 6261794 Chevelle Driven Adapt Sleeve Driven Adapt Sleeve E78 14 A H G70 14 D H B H G78 14 D H B H H78 14 E F H A F H GR70 15 D H G78 I5 E F H Camaro E78 14 D G I C H F70 l4 D G I B G I FH78 14 D G I C H Nova E78 14 A H E70 14 A H 8 Tooth Natural 1975 ALL w 3 SPD DRIVEN SLEEVE CODE GEAR TEETH COLOR ADAPTER CODE ASM A 3987920 20 Blue F 3950354 H 345215 B 3987921 21 Red G 326569 I C 3987922 22 Silver D 3987919 19 Natural E 3987918 18 Brown 3 08 RATIO 3 42 RATIO DRIVE GEAR DRIVE GEAR TIRE SIZE 6261794 6261794 Chevelle Driven Adapter Sleeve Driven Adapter Sleeve E78 14 A H G70 14 D H B H G78 14 D H B H H78 14 E F H A F H GFI70 15 D H G78 15 E F H Camaro E78 14 D G I C H F70 14 D G I B G I FR78 14 D G I C H Nova E78 14 A H E70 14 A H 8 Tooth Natural GM PARTS DIVISION GENERAL MOTORS CORPORATION CHEVROLET 11 4 000 GROUP 4 10 c REV 4 81