I BRAKES REAR AXLE PROP SHAFT WHEELS 5 484 BEARING CDNE Drive Pinion Rear 76 77 A 8 50 DIA RNGR 4 7451155 1 N L BEARING PNG RR 4 I 76 A B W 8 875 DIA RNGR I 7451409 1 N L BEARING DIFF DRIVE PNG RR I I 76 81 B W 8 50 DIA RNGR I 7451 155 1 N L BEARING PNG RR II I 5 76 81 F W 8 50 DIA RNGR I 7451155 1 N L BEARING PNG RR II I I 76 77 H W 6 50 DIA RNGR I 7450984 1 N L BEARING PNG RR 5 447 I I 76 80 H W 7 50 DIA RNGR 7451973 1 15 74 BEARING PNG RR I 76 81 T W 6 50 DIA RNGR 7451982 1 16 35 BEARING PNG RR I 78 79 X W 7 50 DIA RNGR 7450371 1 N L BEARING PNG RR I 78 79 X W 8 50 DIA RNGR 7451155 1 N L BEARING PNG RR 77 A B 8 875 DIA RNGR 7451 155 1 N L BEARING PNG RR 77 81 B W 7 50 DIA RNGR 7450371 1 N L BEARING PNG RR I 7881 A W 7 50 DIA RNGR 7450371 1 N L BEARING PNG RR I 78 81 B W 8 875 DIA RNGR 7451155 1 N L BEARING PNG RR 80 81 A 7 50 DIA RNGR 7455699 1 22 08 BEARING PNG RR I 80 B1 B 7 50 DIA RNGR 7455699 1 22 08 BEARING PNG RR I 76 B0 ALL 9413169 AR 21 10 GONE PINION RR BRG 5 506 BOLT Differential Carrier Cap 76 81 T 362022 4 44 BOLT DIFF CARR BRG CAP I 77 79 X 3818764 4 43 BOLT DIFF CARR BRG CAP I 78 81 A B F H 3818764 4 43 BOLT DIFF CARR BFIG CAP I 5 510 CASE Differential Ring Gear and Pinion NOTE Differential case halves ara nut sold separately NOTE I Ist design has 2 character axle l D coda NOTE 2 Znd design has 3 character axle I D code NOTE 3 When used an 1975 Xper or 7977 B 8 X car lst design the 550697 gear kir must be installed I Ist design has a 2 character axle cade 76 77 A 8 50 DIA RNGR W GSO I 2 56 2 41R 407890 1 276 00 CASE DIFF W INT GEARS 78 77 A 8 50 DIA RNGR W GSO EXC I 2 41 2 56R 407891 1 290 00 CASE DIFF W INT GEARS 76 77 A 8 50 DIA RNGR W 2 41 I I 2 56R EXC G80 1252980 1 80 00 CASE DIFF LESS INT GEARS I 76 77 A 8 50 DIA RNGR EXC G80 2 41 2 56R 1252981 1 80 00 CASE DIFF LESS INT GEARS I 76 A B EXC G80 I 488792 1 97 50 CASE W 2 73 2 93 3 08 RATIO P M TYPE 8 DIA RING GEAR LESS INT I GEARS 78 A B W G80 490776 1 271 00 CASE WITH INTERNAL RING GEARS I W 2 73 2 93 3 08 RATIO P M TYPE I 8 DIA RING GEAR I I 76 77 A B F W G80 407891 1 290 00 CASE EXC 2 41 2 56 RATIO G C K I I TYPE 8 DIA RING GEAR EATON I TYPE W INT GEARS I 78 81 E W 8 50 DIA RNGR EXC GSU 2 41 2 56R 1252981 1 80 00 CASE DIFF LESS INT GEARS 76 B B 50 DIA RNGR W G80 2 56R 407890 1 276 00 CASE DIFF W INT GEARS I 76 B 8 50 DIA RNGR W G80 EXC I 2 56R 407891 1 290 00 CASE DIFF W INT GEARS I I 76 B 8 50 DIA RNGR W 2 56R EXC G80 1252980 1 80 00 CASE DIFF LESS INT GEARS I 76 B1 F W 8 50 DIA RNGR EXC G80 I 2 41 2 568 1252981 1 80 00 CASE DIFF LESS INT GEARS I I 76 80 F 8 50 DIA RNGR W G80 I 2 41 2 56R 407890 1 276 00 CASE DIFF W INT GEARS I 76 80 F 8 50 DIA RNGR W G80 EXC 2 41 2 56R 407891 1 290 00 CASE DIFF W INT GEARS I 76 81 F 8 50 DIA RNGR W 2 41 2 56R EXC GBO 1252980 1 80 00 CASE DIFF LESS INT GEARS 76 H EXC GBO 551569 1 66 25 CASE W 2 29 2 93 RATIO 7 2 DIA RING GEAR LESS INT GEAFIS 76 77 I I EXC G80 1ST DESIGN 1977 344163 1 63 50 CASE W 3 23 3 73 4 10 RATIO 7 z DIA I RING GEAR NOTE 1 LESS INT I GEARS 76 77 H EXC G80 352951 1 63 50 CASE W 2 29 2 93 RATIO 7 DIA I RING GEAR LESS INT GEARS I I 76 77 H EXC G80 3974927 1 52 75 CASE 6 2 DIA RING GEAR LESS INT I GEARS 76 77 H W G80 3997990 1 202 00 CASE WITH INTERNAL RING GEARS W 2 92 RATIO 6 DIA RING GEAR I GM PARTS DIVISION GENERAL MOTORS CORPORATION CHEVROLET 10 S I 9 80 5 13 5 4 84 5 510