5 520 SPIDER Differential Pinion 67 70 Ser 30 w 1 1 000 Ib axle 370429 1 10 10 forged 3656895 1 46 70 Ser 20 30 exc 1 1 000 Ib axle 3663696 1 10 10 forged 3663696 Note 1 NOTE 1 For 2nd design use 3843668 Shaft Group 5 517 and 3813397 Pin Group 5 518 61 69 Ser 20 30 exc 4 WD 70 Ser 20 30 2428675 1 52 75 cl ctr cam w snap ring 5 526 GEAR Differential Pinion 38 42 Comm 46 63 V Ton exc P Trac 370225 2 4 90 10 teeth shaft hole 64 70 G 10 w 3 08 3 36 ratio exc P Trac 3958108 2 5 00 10 teeth 46 67 7 Ton 1st design exc P Trac 11 000 lb axle rear 57 59 Ser 3E 3G w 4 WD 3681055 A R 4 90 frt axle 10 teeth Note 1 NOTE 1 Use with side gears with groove 67 70 Ser 30 w 11 000 lb axle 3697745 4 5 70 10 teeth shaft hole V 58 59 V2 Ton w P Trac rear 65 68 Ser 10 w leaf type springs exc P Trac 4 WD 2370715 4 3 65 front 10 teeth dab of orange paint Note 2 NOTE 2 When using 2370715 in place of 3745313 3744618 side gear must also be used 60 62 Ser 10 w P Trac 3772617 2 7 85 10 teeth shaft hole Eaton ED 40250 65 67 Ser 10 w leaf type springs exc P Trac 60 70 4 WD Blazer K 2346845 2 4 55 10 teeth front axle Dana 17717 63 70 Ser 10 w P Trac 3 73 ratio 64 70 G 10 20 w P Trac 3 73 4 11 ratio 70 Blazer 3830670 2 7 50 Eaton 40343 64 Ser 10 exc D D 4 WD P Trac 64 Ser 10 D D 4 WD 64 G 10 w 4 11 ratio 2 900 lb axle 64 G 10 w 3 73 ratio exc P Trac 65 69 G 10 exc 3 36 ratio P Trac 65 69 Ser 10 exc P Trac leaf type springs 4 WD 65 69 Ser 10 4 WD exc P Trac 67 69 G 20 70 G 10 20 3 07 3 73 4 11 ratio exc P Trac 70 Ser 10 3 07 3 73 4 11 ratio exc P Trac 4 WD 70 Ser 10 4 WD 3 73 ratio exc P Trac 70 Blazer 3880140 2 4 60 10 teeth 64 68 G 10 w P Trac 3 36 ratio 3854260 2 4 30 Dana 32808 65 70 G 10 w P Trac 3 36 ratio 9778343 2 7 65 Eaton ED 40335 65 66 Ser 20 w leaf type springs exc P Trac 2358882 2 4 10 10 teeth shaft hole V Dana 30261 65 67 Ser 20 w power lok leaf type sprgs 68 70 Ser 10 3 54 ratio w power lok 68 70 Ser 20 w power lok 2392353 4 4 85 10 teeth 1 shaft hole Dana 31040 66 Ser 10 exc P Trac 64 66 Ser 10 w P Trac 3 73 ratio 65 66 G 10 w P Trac 3 73 4 11 ratio 67 Ser 10 4 WD w P Trac 3849909 2 4 80 Dana 32264 Y 1971 CHEVROLET MOTOR DIVISION GENERAL MOTORS CORPORATION P A 31 5 520 5 526 5 52 REV 6 71