55 59 Ser 4 w SGL SPD axle 60 62 Ser 40 60 62 Ser 50 w 11 13000 lb axle 60 62 Ser 60 SBC w 13000 lb axle 63 66 Ser SO exc 15000 lb 2 SPD 3 axle 4 cyc DIESEL 65 Ser 50 TILT 4 cyc DIESEL exc 2 SPD axle 66 Ser 50 4 cyc DIESEL exc 15000 lb 2 SPD axle 18 teeth 27 splines 3697746 2 9 50 64 66 Ser 80 23000 lb 2 SPD axle right 20 teeth 16 splines exc 4 cyc DIESEL Eaton 39346 2349794 1 22 35 64 66 Ser 80 23000 lb axle exc left 20 teeth 16 splines 4 cyc DIESEL Eaton 39345 2347388 A R 22 35 65 66 Ser 60 4 cyc DIESEL W 16000 lb axle 57815770 2 17 75 66 Ser 50 60 w 2 SPD axle left 3873576 1 13 85 66 Ser 50 60 w 2 SPD axle right 3873577 1 13 85 5 529 GEAR ASSEMBLY Ring and Pinion not sold separately Part numbers appearing in parenthesis are those ofthe ring gear and pinion respectively NOTE Axle rati0 Ring gear Pinion 37 6 6 17 to 1 55 59 Ser 4 w SGL SPD axle 55 56 Ser 6 exc H D 60 61 Ser 40 lst design 63 66 Ser 50 w 11000 lb axle 37 6 I hypoid 3652522 3652549 604427 1 74 00 3 3 I966 Chevrolet Motor Division HD1 656 General Motors Corporation REVISED MAY I I 966