Ring Pinion Speedo Spee o Years Models Tire or Wheel Sizes Gear Teeth Adapter Gear No 48 55 TON lst Ser 54 55 1 TON w hvy duty lst Ser r 7 50 17 7 00 17 4 36 7 None 3692 235 50 54 PASS w P G 53 55 CORV 6 cyl 5 13 teeth 6 70 15 4 ply 39 11 None 3704 1230 53 54 PASS exc P G 4 11 teeth 6 70 15 37 10 None 3702814 54 1 Q TON 6 00 x 16 6 ply 39 10 None 3709359 54 55 TON w hvy duty lst Ser 6 00 x 16 6 ply 36 7 None 3692 234 55 57 TON w hvy duty 15 6 70 x 15 6 50 x 16 6 ply 39 10 None 3707 598 55 58 TON w hvy duty 2nd Ser exc D D 7 00 x 17 32 7 1583876 3689121 55 58 4 TON w hvy duty 2nd Ser exc D D 15 6 50 x 16 32 7 None 3689178 5 5 58 TON w hvy duty 2nd Ser exc D D 7 50 x 17 l 32 7 1565813 3689178 5 5 58 D D w hvy duty 2nd Ser 7 00 x 17 7 50 x 17 7 00 x 18 36 7 None 3689178 515 58 1 TON w hvy duty 2nd Ser 7 00 x 17 8 ply 7 00 x 18 8 ply 7 50 x 17 36 7 None 3689 78 56 58 TON w hvy duty 7 x 17 5 39 10 1565812 3707598 56 58 tt TON w hvy duty exc D D 7 x 17 5 32 7 None 3689 78 56 58 TON w hvy duty exc D D 8 x 17 5 32 7 1565812 3689 78 56 58 TON w hvy duty exc D D 8 x 19 5 32 7 1565813 3689 78 56 58 D D 1 TON w hvy duty 8 x 19 5 8 ply 36 7 None 3689 78 56 58 l TON w hvy duty 8 x 17 5 8 ply 36 7 None 3689 79 58 D D w hvy duty 7 x 17 5 8 x 17 5 6 and 8 ply 36 7 None 3689179 58 TON w hvy duty 6 70 15 6 50 16 6 ply 37 10 None 3752392 58 TON w hvy duty 7 00 17 5 8 00 17 5 37 10 None 3752390 Commercial and Utility Trucks equipped with 4 Speed Transmission 37 39 GD HD ID 15 wheel 37 9 None 602798 37 39 GE HE IE 7 50 17 8 ply 37 9 None 602798 37 47 S T V W Y M OR OS OW OY P1 PK PL O1 OK OL 6 00 20 6 and 8 ply 30 x 5 6 and 8 ply 37 6 1565814 603074 37 47 S T V W Y M OR OS OW OY P1 PK 6 50 20 6 ply 7 00 20 8 ply 32 x 6 PL O1 OK OL 8 and 10 ply 32 x 7 10 ply 37 6 None 603074 37 47 S T V W Y M OR OS OW OY P1 PK PL O1 OK OL 7 50 20 8 ply 37 6 1565812 1565813 603074 37 47 S T V W Y M OR OS OW OY DS Pl PK PL ES O1 OK QL 6 00 20 6 and 8 ply 30 x 5 6 and 8 ply 38 7 1565814 603075 37 47 S T V W Y M OR OS OW OY DS 6 50 20 6 ply 7 00 20 8 ply 32 x 6 P PK PL ES Ol OK QL 8 and 10 ply 32 x 7 10 ply 38 7 None 603075 37 UTILITY 6 00 20 6 ply 32 x 6 6 ply 38 7 None 602527 46 47 2 TON 7 50 20 8 ply 37 6 None 602527 39 47 ALL w 2 SPD 8 25 20 10 ply 18 22 and 1565812 E 603075 1 5 64 3652705 39 42 V W Y M w 2 SPD 8 25 20 10 ply 8 22 and 1565812 603074 1 6 17 1 606431 40 42 KD AL BL 15 wheel 7 00 17 6 and 8 ply 7 50 17 8 ply 41 9 None 603075 40 42 KE KF AM AN BM BN 15 wheel 7 00 17 6 and 8 ply 7 50 17 8 ply 41 9 None 602798 41 42 TON 5 50 18 4 ply 37 9 None 602798 46 47 TON 6 00 16 6 ply 6 00 18 6 ply 37 9 None 602798 48 53 TON 5 50 15 6 and 8 ply 6 00 16 6 ply 6 50 16 6 ply 37 9 None 36891223 48 55 TON lst Ser exc D D 7 00 17 6 and 8 ply 32 7 None 3589223 48 55 jj TON lst Ser exc D D 7 50 17 8 ply 32 7 1565812 3689 2223 4 8 55 TON lst Ser exc FR 5 50 15 6 and 8 ply 36 7 None 36831121 55 58 M TON 2nd Ser exc D D 7 00 x 17 32 7 1583876 3689121 48 58 1 TON 2nd Ser exc 2 SPD 6 50 20 7 00 20 37 6 None 3689121 4 8 55 1 TON lst Ser 7 50 20 8 and 10 ply 37 6 1565812 3689121 4 8 55 1 TON lst Ser 10 00 18 12 ply 37 6 1565813 3689121 54 55 2 TON w 2 SPD lst Ser 7 50 20 10 ply 8 25 20 10 or 12 ply 8 86 and None 3689121 6 7 55 58 2 TON w hvy duty 2nd Ser 7 50 x 20 8 25 x 20 36 5 1565814 3689121 55 58 2 TON w hvy duty 2nd Ser 9 00 x 20 10 00 x 20 36 5 None 3689121 mavnssu Aueusr 1 wss 481 4 1337