I POWERGLIDE TRANSMISSION I I I I 1968 LIGHT DUTY TRUCKS SPE EDOM ETER GEAR CHART A I J 4 343 4 337 4 329 4 338 I REAR I I GEAR GEAR I I AXLE TIRE SIZE AND TYPE SPEEDO SPEEDO ADARTER FITTING I RATIO DRIVE DRIVEN SPEEDO ASSY A I 1 I I I POWERGLIDE TRANSMISSION 1 3 36 6 95 x 14 I 6261795 3860345 1 I I I 3 36 7 00 X 14 0 R 1 6261795 3860346 1565813 3 36 7 00 x 14 exc O R 7 35 x 14 6261795 I 3860347 1565813 I 3 73 7 00 x 14 9xc O R I 6261795 3860345 1565814 3 73 7 75 x 15 8 15 x 15 O R A 6261795 I 3860345 I I I 3 73 7 00 x 14 0 R 7 35 x 14 O R I A 8 15 x 15 exc 0 R I 6261795 3860346 I 3 73 6 95 x 14 7 35 x 14 exc O R 8 00 x 16 5 6261795 1 3860347 3 73 68 00 x 16 5 6261794 3987918 1583624 1 3 73 6 50 x 16 O R 7 00 x 17 5 O R 6261794 3987920 1 3 73 7 00 x 15 6 50 x 16 exc 0 R I I 3 I I 7 00 x 17 5 exc 0 R I 6261794 3987921 I I I 4 10 7 00 x 16 9 50 x 16 5 8 00 x 17 5 6261795 A 3860345 I 4 10 6 50 x 16 8 75 x 16 5 7 00 x 17 6 6261795 3860346 I 4 10 8 00 x 16 5 I l 6261795 3860347 I I 4 1 7 00 x 17 exc 0 R 1 6261795 3860348 1589247 1 POWERGLIDE TRANSMISSION A I 1 I 1 4 10 7 00 x 17 O R I7 50 x 17 8 00 x 19 5 62617943 3987920 I 5 4 10 10 00 x 16 5 I 6261794 3987921 1565814 4 10 7 50 x 16 I I 6261794 3 7921 I 4 11 6 50 x 16 O R I 6261795 3860345 4 11 7 00 x 15 6 50 x 16 exc O R I 7 00 x 17 5 6261795 3860346 I 4 11 7 00 x 14 8 15 x 15 8xc O R II 6261795 3860347 I 1565814 I I 4 11 7 75 x 15 8 00 x 16 5 8 15 x 15 O R 6261795 3860347 1 4 11 6 95 x 14 7 35 x 14 exc O R I I 6261795 I 3860348 1565814 I 4 11 7 00 x 14 0 R 7 35 x 14 O R I 6261795 3860348 I 4 57 7 50 x 17 8 00 x 19 5 I 6261795 3860345 I I I I I4 57 7 00 x 17 6261795 3860346 I 4 57 7 00 x 16 8 00 x 17 5 I 6261795 3860346 1565814 I I 4 57 7 50 x 16 9 50 x 16 5 6261795 3860347 I 4 57 8 75 x 16 5 6261795 3860347 1565814 A I 4 57 7 00 x 16 O R 8 00 x 16 5 7 00 x 17 5 n I I A 8 00 x 17 5 0 R 10 00 x 16 5 6261795 3860348 1 4 57 18 00 x 16 5 6261794 3987921 1583624 I 1 I 1 I I 1 1 I I I GM PARTS DIVISION GENERAL MOTORS CORPORATION CHEVROLET 72TL Y I REV 5 79 I A 4 121 4 3137 4 337