I 3 SPEED TRANSMISSION A 1970 TRUCK SPEEDOMETER GEAR CHART CONT 4 337 4 343 I I I REAR GEAR GEAR 329 AXLE REAR TIRE SIZE SPEED0 SPEEDO ADAPTER I RATIO I R DmvEN DRIVE SPEEDO MUNCIEI 3 SPEED EXC SER 20 D DI 8 CYL I CONT I I I I 4 10 8 75x16 5 6 50x16T 8 75x 16 5 O R 10 0x16 5 10x16 5 O R I 3987918 6261794 3905497 I 4 10 7 50 x 16 7 00 x16 O R 7 50 x 16 O R I A I 3987921 6261794 V I 4 10 I 7 00 x 16 9 50 x 16 5 3987921 I 6261794 3950354 4 10 9 5 x 16 5 O R I 3987918 6261794 4 3950352 4 11 G78 x 15 G78 x 15 O R H78 x 15 O R 3987920 6261794 3950352 4 11 7 00 x 15 O R 6 50 x 16T 6 50 X 16 T O R I 6 50 x 16 P O R 7 00 x 15 3987918 6261794 3905497 4 11 6 50 x 16P 3987919 6261794 3850352 4 11 H78 x 15 3987919 6261794 3905497 4 55 8 75 x 16 5 6 50 x 16T 10 0 x 16 5 10 x 16 5 O R 3987920 6261794 3905497 4 55 7 50 x 16 7 50 x 16 O R 3987919 6261794 3950352 I I 4 55 7 00 x 16 9 5 x 16 5 O R 3987920 6261794 3950352 4 55 9 50 x 16 5 7 x 16 O R 3987919 V 6261794 3905497 4 65 8 75 x 16 5 O R I I 3987921 6261794 3950352 4 57 8 75 x 16 5 6 50 x 16T 10 0 x 16 5 1 0 x 16 5 0 R 3987920 6261794 3905497 I 4 57 7 50x 16 7 50 x 16 0 R 4 3987919 6261794 3950352 4 57 7 00 x 16 9 5 x 16 5 O R 3987920 6261794 3950352 4 57 9 50 x 16 5 7 00 x 16 0 R 3987919 6261794 3905497 I I 4 57 8 75 x 16 5 O R 3987921 3987919 I 3950352 SER 20 D DI W MUNCIE 3 SPEED 3501 4 10 8 75 x 16 5 10 0 x 16 5 I 3860345 6261795 3950354 4 10 6 50x16T 7 00x I6 9 50x16 5 9 5x 16 5 O R 10 x 16 5 0 R 3860345 6261795 4 10 7 50 x 16 7 00 x 16 O R 7 00 x 16 O R 3860348 6261795 3950348 4 10 8 75 x 16 5 O R I 3860346 I 6261795 I 4 57 8 75 x 16 5 6 50 x 16T 8 75 x 16 5 O R 10 0 x 16 5 10 x 16 5 O R 3860348 6261795 V I 4 57 7 50 x 16 7 50 x 16 O R 3860346 6261795 4 57 7 00 x 16 9 50 x 16 5 7 00 x 16 O R 9 5 x 16 6 O R 3860347 6261795 I I A I I I I I I I GM PARTS DIVISION GENERAL MOTORS CORPORATION CHEVROLET 72TL 1 REV 5 79 I I 4 19 4 337 4 337