3 SPEED TRANSMISSION 5 1 I 4 338 V FITTING BUSHING RETlAlNER SLEEVE SEAL Speedometer Driven Gear V I NOTE For detailed application use Speedometer Gear Chart V 61 Ser 10 20 exc 4 WD 62 63 Ser 10 20 3748533 1 V 2 0 L V 60 62 Ser 10 4 WD 6 70 x 15 7 10 x 15 60 67 Ser 20 4 WD 7 00 x 16 7 00 x 17 7 50 x 15 7 50 x i 17 7 50 x 16 8 00 x 17 5 8 00 x 18 5 60 66 Ser 10 4 WD A 6 00 x 16 6 50 x 16 6 70 x 15 7 00 x V V 15 7 50 x 1 5 7 75 x 15 7 00 x 17 5 8 00 x 17 5 V 60 66 Ser 20 4 WD I 7 50 x 17 8 00 x 19 5 68 For application see chart in group 4 337 2396889 1 11 teeth stamped S W and 448663 V 60 66 Ser 20 4 WD V 6 50 x 16 7 00 x 15 7 00 x 16 7 00 x V 17 5 J 63 67 Ser 1 0 20 w 3 Spd exc H D V 64 70 G 10 20 V 68 70 Ser 10 20 Blazer exc 4 WD 3869914 1 I w seal L Q 68 For application refer to chart in 4 V V group 4 337 3756911 1 11 teeth yellow and orange paint 68 For application refer to chart in VV V V group 4 337 3705582 1 I V 20 teeth orange and green paint I I 68 For application refer to chart in V V group 4 337 3756915 1 13 teeth green and black paint 68 For application refer to chart in V V e group 4 337 3749303 1 18 teeth blackand white paint V 68 For application refer to chartin I group 4 337 3756913 1 12 teetli yellow and purple paint Q 69 Ser 10 20 4 WD 69 70 Blazer 284414 1 BUSHING 55 59 Ser 3 w 3 Spd 2nd Ser exc 60 67 Ser 10 20 w 3 Spd exc I l D 65 70 G 10 20 V V 68 70 Ser 10 20 Blazer exc 4 WD 3708148 V1 V RETAINER gear fitting l D V 60 70 All Blazer 4 WD 2396891 1 SLEEVE V 55 61 All w 3 Spd exc H D V A E 61 64 4 WD w 3 Spd I 62 Ser 10 20 exc D D 4 WD 62 Ser 10 20 D D V 63 Ser 10 20 exc 4 WD H D t V 64 Ser 10 20 exc 4 WD 6 5 70 All Blazer 62649 1 V SEAL gear fitting O ring hole plug i l I l D 4 342 SHAFT ASSY SHAFT UNIT Speedometer without Casing NOTE 3 For models requiring maximum length of 70 Cut to required length V NOTE 4 For models requiring length of 81 to 172 cut to required length V A 60 64 Ser 10 20 exc 4 WD D D A V l V 0 0 i i V V 65 Ser 10 thru 30 w 3 Spd exc V 4 WD D D H D 0 D V 6477499 1 56 48 59 D D exc 1 Ton 60 66 Ser 20 30 D D V 63 66 4 WDV 6478825 1 98 A 39 55 Comm 1st Ser exc D D V j V 55 57 a Ton w 0 D 6477499 1 68 64 65 G 10 w 3 Spd l 66 67 G 10 20 6478225 1 A l 38 72 All 6477499 1 K SHAFT UNIT consists of shaft tip AC 615 70 0 L Note 3 38 72 All 6478825 1 SHAFT UNIT 171 0 L Note 4 J 4 342A SHAFT ASSEMBLY with Casing V 38 72 All 6478128 64 to 68 CC 529 47 69 All 6478131 1 80 casing 0 L CC 514 l 55 72 All 6478126 1 u w 56 thru B0 long V V 55 72 All w 5478127 1 u w61 thru 64 long CC 510 V 48 59 D D exc 1 Ton i V 60 62 Ser 20 30 D D V V 63 66 4 WD I A l 67 69 Ser 20 30 D D 6478190 1 10B casing V 60 62 4 WD 1st design V 60 64 Ser 20 30 D D T V 65 66 All 6478193 1 V 120 casing V i t GM PARTS DIVISION GENERAL MOTORS CORPORATION CHEVROLET 72TL i 4 338 4 342 I 4 36 REV 5 79 i