4 SPEED TRANSMISSION I 1970 TRUCK SPEEDOMETER GEAR CHART CONT 1 l V 4 337 4 343 n REAR GEAR GEAR 4 329 AXLE REAR TIRE SIZE SPEEDO SPEEDO ADAPTER r RATIO DRIVEN DRIVE SPEEDO I I MUNCIE 4 SPEED l I 3 07 G78 x 15 G78 X 150 R H78 x 15 A H78 x 15 0 R I 3866799 3866742 3950348 3 07 E78 x 15 V 3866917 3866742 3950348 I A 3 07 7 00 x 15 0 R 3866798 3866742 3950348 3 07 6 50 x 16P 3866917 3866742 3950350 1 3 07 6 50 x 16T 6 50 x 16T O R 6 50 x 16P O R I 7 00 x 15 3866799 3866742 3950350 3 07 E78 x 15 O R 3866798 3866742 3925673 I 3 53 G78 x 15 G78 x 15 O R H78 x 15 H78 x 15 O R 3866798 3866742 3 53 8 25 x 15 3866919 3866742 3950348 I 3 53 8 75 x 1 6 5 7 00 x 15 0 R 3866799 I 3866742 3925673 3 53 6 50 x 16P 3866918 3866742 3950348 r 3 53 6 50 x 16T 7 00 x 15 10 0 x 16 5 10 x 16 5 O R 3866919 3866742 3950350 3 53 6 50 x 16T 0 R 6 50 x 16P 0 R I 9 5 x 16 5 O R 3866917 3866742 3950348 I 3 53 7 50 x 16 7 50 x 16 O R 3866799 3866742 3950348 3 53 7 00 x16 9 50 x 16 5 3866798 3866742 3925673 I 3 53 7 00 x 16 0 R 3866918 3866742 3950350 3 53 8 75 x 16 5 O R A 3866798 3866742 3925671 3 72 G78 x 15 G78 x 15 0 R H78 x 15 H78 x 15 O R 3866799 3866742 3 72 E78 x 15 E78 x 15 O R 3866917 3866742 1 3 72 7 00 x 15 O R 6 50 x 16T 7 00 x 1 5 6 50rx 16P O R 6 50 x 16T 0 R 3866798 3866742 4 3 72 6 50 x 16P 3866798 3866742 3950354 1 4 10 8 75 x 16 5 8 75 x 16 5 O R 10 x 16 5 O R 3866917 3866742 4 10 6 50 x 16T 10 0 x 16 5 3866799 3866742 3950354 4 10 7 50 x 16 7 50 x 16 0 R 3866798 3866742 4 10 j 7 00 x 16 9 50 x 16 5 7 00 x 16 0 R 9 5 x 16 5 O R 3866799 3866742 4 10 8 00 x 19 5 3866917 3866742 3850348 4 10 8 x 19 5 0 R I 3866798 3866742 3925671 4 4 10 7 00 x 18 3866799 3866742 3925673 4 10 10 0 x 16 5 3866799 3866742 3950354 4 11 G78 x 15 G78 x 15 0 R H78 x 15 H78 x 15 O R 3866918 3866742 4 11 E78 x 15 E78 x 15 0 R 3866919 3866742 4 11 7 00x 15 7 00 x 15 0 R 3866917 3866742 4 11 6 50 x 16P 3866794 3866663 3950348 4 11 6 50 x 16T 3866799 3866742 3950354 I 4 11 6 50 x 16P O R 6 50 x 16T O R 3866799 3866742 I 4 55 8 75 x 16 5 6 50 x 16T 8 75 x 16 5 0 R A 10 0 x 16 5 10 x 16 5 O R 3866919 3866742 I 4 55 7 50 x 16 7 50 x 16 O T 3866917 3866742 4 55 7 00x 16 9 50x 16 5 7 00x 16 O R Y 9 5 x 16 5 0 R 3866918 3866742 V 4 55 8 00 x 19 5 3866798 3866742 3950354 A 4 55 A 8 x 19 5 O R 3866799 3866742 4 57 8 75 x 16 5 6 50 x 16T 8 75 x 16 5 0 R 10 0 x16 5 10 x 16 5 0 R 3866919 3866742 4 4 57 7 50 x 16 7 50 x 16 O R 3866917 3866742 4 57 7 00x16 9 50x16 5 7 00x160 R 9 5 x 16 5 O R 3866918 3866742 I 4 57 8 00 x 19 5 8 x 19 5 0 R 7 00 x 18 3866799 3866742 1 5 14 8 75 x 16 5 6 50 x 16T 8 75 x 16 5 O R 9 5 x 16 5 O R 10 0 x 16 5 10x 16 5 0 R 3866794 3866663 I I 5 14 7 50 x 16 I 3866919 3866742 3950354 5 14 7 00 x 16 A 3866799 3866742 3905497 5 14 8 00 x 19 5 3866918 3866742 5 14 8 x 19 5 0 R 3866919 3866742 5 14 9 50 x 16 5 7 00 x16 0 R 7 50x 16 0 R 3866793 3866663 I A 5 14 7 00 x 18 I 3866795 3866663 3950348 I i GM PARTS DIVISION GENERAL MOTORS CORPORATION CHEVROLET 72TL REV 5 79 4 67 4 337 4 337