65 Ser 60 4 cyc Diesel w 15 16 000 lb axle 66 Ser 50 60 exc 2 Spd axle 67 69 Ser 50 exc Diesel 67 69 Ser 60 exc TDM Diesel 70 Ser 50 w 15 17 000 lbl X Sgl Spd axle 70 Ser 60 Conv w 17 000 Ib Sgl Spd axle 3879531 1 372 05 7 20 to 1 ratio 58 65 Ser 80 w 18 000 Ib 2 Spd exc 2 cyc Diesel TDM 66 Ser 80 w 18 500 lb 2 Spd exc 2 Spd Diesel TDM 24 54274 1 965 00 7 17 9 77 to 1 ratio Eaton 61838 Note 1 3 NOTE 3 When using 2454274 in place of 5733391 use original U joint flange yoke or replace with 3730564 60 61 Ser 60 70 w 16 000 lh axle 60 64 Ser 80 TDM exc Diesel 65 Ser 60 4 cyc Diesel exc TDM 66 Ser 60 4 cyc Diesel 17 000 lb axle exc 12 Spd 66 Ser 80 TDM w 30 000 Ib axle 2nd design 67 70 Ser 60 TDM w 30 000 Ib axle 8 cyl 3907921 1 477 00 rear rear on Tandem models 7 17 to 1 ratio Eaton 69294 Note 2 60 61 Ser 60 70 w 16 000 Ib 2 Spd exc Diesel 65 Ser 60 w 17 000 Ib 2 Spd axle exc 2 cyc Diesel A 66 Ser 60 4 cyc Diesel w 17 000 Ib 2 Spd axle 8879260 1 720 00 Eaton 69067 6 50 9 04 to 1 ratio 60 61 Ser 60 70 w 16 000 Ib axle 62 65 Ser 60 w 17 000 lb axle 8879261 1 720 00 Eaton 69068 7 17 9 97 to 1 ratio 61 66 All w 11 000 Ib axle 67 70 Ser 40 w 11 000 lb axle 3880663 1 296 80 6 1 7 to 1 ratio 62 66 Ser 60 2 cyc Diesel w 15 000 Ib axle exc Tilt 2 Spd axle 65 66 Ser 50 60 4 cyc Diesel w 15 000 lb axle exc 2 Spd 67 69 Ser 50 60 w Sgl Spd rr axle Diesel exc TDM 68 69 Ser 50 15 000 Ib Sgl Spd axle w 15 x 5 brakes 68 69 Ser 50 w Dual Brakes 70 Ser 50 w Sgl Spd axle 3079532 1 372 05 6 1 7 to 1 ratio 62 66 Ser 80 2 cyc Diesel w 18 500 Ib axle 1 st design exc TDM 65 Ser 80 4 cyc Diesel w 18 500 lb 2 Spd axle exc TDM 2454271 1 965 00 5 57 7 60 to 1 ratio Eaton 61835 Note I 63 65 Ser 60 2 cyc Diesel w 15 000 lb 2 Spd axle exc Tilt 65 Ser 60 4 cyc Diesel w 15 000 Ib 2 Spd A axle 31843065 1 588 30 5 83 7 95 to 1 ratio 63 66 Ser 60 TDM 4 cyc Diesel 2nd design exc 28 000 Ib 2 Spd axle 2 492699 1 640 00 7 39 to 1 ratio less yoke Eaton 68933 1971 CHEVROLET MOTOR DIVISION GENERAL MOTORS CORPORATION P A 31S t R5v 6 7 5 195 5 505 5 505