POWERGLIDE AND TOR0 UE DRIVE TRANSMISSION 1973 SPEEDOMETER GEAR CHART NOVA P wergIide cons pnrvan cnn smzvz Assv A 3987920 20T 3775589 3 08 DRIVE GEAR TIRE SIZE 6261794 Driven E78 14 A E70 14 A VEGA REAR MODEL 4 337 4 343 AXLE USAGE GEAR SPEED0 GEAR SFEEDO RATIO DRIVEN DRIVE 2 92 All 3987918 6261797 3 36 All 3987921 6261797 4 338 FITTING GRDMMET RETAINER SEAL Speedometer Driven Gear 62 64 Chevy Chevelle 66 67 Pass w P G 65 88 Chevy 65 66 Chevelle 67 69 Chevy Camaro 68 69 Pass 69 Chevelle 70 72 All 3869914 1 3 05 w seal 4 I 73 Vega w F G 345215 1 2 70 speede drive gear 71 73 Vega 3900894 1 GROMMET speedc flex shaft I 65 69 Pass 70 73 All 3708148 1 14 RETAINER gear fitting M I D 71 72 Vega 27773 1 SCREW epeedo driven gear fitting retainer 62 73 All 6264903 1 22 SEAL gear fltting O ring hole plug n I D 71 72 Vega 73 All 3869910 1 1 15 SEAL speedo pinion 71 73 Vega 6264903 1 22 SEAL 0 RING speedc driven gear fltting 71 73 Vega 6478373 I 74 SPRING speedc cable Iecklng 4 342 SHAFT ASSY SHAFT UNIT CLIP Speedcmeter without Casing 64 65 Chevelle w P G 6478171 I V 7 64 55 66 67 Chevy Chevelle 68 Chevy 8 cyl 1564778 1 2 40 56 0 L 68 Chevelle w cruise control 6478123 1 7 48 48 0 L 69 Chevy Camaro Spt Cpe exc floor shift 302 350 396 69 Pass 6477306 1 2 60 61 u 69 Chevy Camaro Spt Cpe w floor shlft exc 302 350 396 6477297 I 2 00 upper flex 37 69 Camaro Conv exc flour shlft 302 350 396 6478073 1 67 62 75 All 6477499 1 3 90 SHAFT UNIT ccnsism of shaft tip AC 615 70 0 L Note 1 NOTE I For models requiring maximum lengrh uf 70 cut ta required length 62 75 All 6478825 1 7 36 SHAFT UNIT 171 O L Note 2 NOTE 2 For made s requlHng length af 70 tv I 72 cut tv required lengm ja 69 All w quick release cable 6491006 1 37 CLIP Instr cluater cable release 4 342A SHAFT ASSEMBLY with Casing i NOTE Shaft length is generally 7 longer than casing dlmenslan latent 62 69 All 6478125 1 8 26 55 casing r GM PARTS DIVISION GENERAL MOTORS CORPORATION CHEVROLET l1 T 4 337 4 342 4 21s REV 4 77