EIRAKES REAR AXLE AND DRIVE 5 528 GEAR Differential Side Con t 64 66 Ser 50 w 15 000 lb axle exc 2 Spd 66 Ser 60 4 cyc Diesel w 15 2 000 lb axle exc 2 Spd left and right 55 59 Ser 4 w 2 Spd axle 55 59 Ser 5 6 7 8 SBC w 2 Spd axle exc H D 60 61 Ser 60 w 2 Spd 62 66 Ser 50 60 2 Spd axle w vacuum shift exc 4 cyc Diesel 65 66 Ser 60 4 cyc Diesel w 15 000 Ib 2 Spd axle 67 68 Ser 50 60 w 15 17 000 Ib axle 6 17 7 20 ratio exc 2 Spd 69 70 Ser 50 6 17 7 20 ratio w Sgl Spd axle 69 70 Ser 60 6 17 7 20 ratio w Sgl Spd axle exc SBC TDM 71 72 Ser 50 60 w Sgl Spd axle 3708818A R forged 3708818 55 59 Ser 4 w 2 Spd axle A i 55 59 Ser 5 6 7 8 w 2 Spd axle exc H D l i 55 59 Ser 4 w Sgl Spd axle 60 61 Ser 60 w 2 Spd axle exc H D l 60 61 Ser 70 SBC w 2 Spd axle exc H D 60 62 Ser 40 60 62 Ser 50 w 11 13 000 Ib axle l 60 62 Ser 60 SBC w 13 000 Ib axle 63 66 Ser 50 exc 15 000 lb 2 Spd axle 4 cyc Diesel 65 Ser 50 Tilt 4 cyc Diesel exc 2 Spd axle 66 Ser 50 4 cyc Diesel exc l5 I K 000 lb 2 Spd axle 67 72 Ser 40 3697746 2 18 teeth 27 splines 56 59 Ser 9 10 w 18 000 Ib 2 Spd 4 axle 60 62 Ser 80 w 2 Spd axle 58 59 Ser 9 10 w 18 000 Ib axle exc 2 Spd 60 66 Ser 80 w 18 18 500 lb axle i 64 65 Ser 80 TDM w 34 000 Ib axle exc 4 cyc Diesel 65 Ser 80 4 cyc Diesel w 18 000 Ib axle 6 50 7 60 ratio 65 66 Ser 60 TDM Diesel exc 128 000 lb 2 Spd 67 72 Ser 60 w 18 500 34 000 Ib l axle 2303349 A R left and right 18 teeth 16 splines Eaton 37072 62 65 Ser 50 60 2 Spd axle w vacuum shift 3708820 1 right 29 splines 2 i wide forged 3708820 T 64 66 Ser 80 23 000 Ib axle ext 4 cyc Diesel left 68 72 Ser 60 w 23 000 lb axle 612278 A R left and right Eaton 73339 65 66 Ser 60 4 cyc Diesel w 16 I 000 lb axle 5781577 2 66 72 Ser 50 60 w Chev 2 Spd axle 3873576 1 left 66 72 Ser 50 60 w Chev 2 Spd axle 3873577 1 right 5 529 GEAR ASSEMBLY Ring and Pinion not sold separately Part numbers appearing in parenthesis are those of the ring gear an pinion respectively NOTE 7 When used w P Tram requires P Trac differential unit 3853552 Group 5 5 70 NOTE 1 When using 8872292 in place of 3748641 76 of bolt 2492746 and 16 of nut 9422302 must be used A f NOTE 2 On some models it will be necessary to use 7451320 Bearing Assy in Group 5 484 NOTE 3 With ribbed design NOTE 4 With conical design GM PARTS DIVISION GENERAL MOTORS CORPORATION CHEVROLET 72TM t REV 5 79 A 5 ss 5 528 5 529