3 SPEED TRANSMISSION 4 337 4 343 4 330 2 REAR GEAR I GEAR 329 KEY AXLE REAR TIRE SIZE SPEEDOI SPEEDO ADAPTER SPEEDO RA DRIVEN DRIVE SPEE ADAPTER TRANSFER CASE NEW PROCESS 3 07 G78 x 15 3866798 3964594 1563872 867209 3 07 E78 x 15 3866917 3964594 1563967 867209 3 07 7 00 x 15 O R 3866798 3964594 1563967 867209 3 07 G78 x 15 O R H78 x 15 H78 x 15 O R 3866799 3964594 1563967 867209 3 07 6 50 x 16P 3866917 3964594 1583876 867209 3 07 6 50 x 16T 6 50 x 16 T O R 6 50 x 16 P O R 7 00 x 15 10 00 x 16 5 10 x 16 5 0 R 3866798 3964594 1583876 867209 3 07 E78 x 15 O R 3866918 3964594 1583876 867209 3 07 7 50 x 16 O R 3866798 3964594 1583876 867209 3 73 G78 x 15 G78 x 15 0 R 6 50 x 16P 5 H78 x 15 H78 x 15 0 R 3866799 3964594 3 73 E78 x 15 E78 x 15 O R 3866917 3964594 3 73 8 75 x 16 5 7 00 x 15 O R 6 50 16T Z 6 50 x 16 T O R 6 50 x 16 P O R 7 00 x 15 8 75 x 16 5 O R 10 0 x 16 5 10 x 16 5 O R 7 50 x 16 O R 3866798 3964594 4 10 8 75 x 16 5 6 50 x 16T 7 00 x 15 8 75 x 16 5 O R 10 0 x 16 5 10 x 16 5 0 R 3866917 3964594 4 10 7 50 x 16 7 50 x 16 O R 3866798 3964594 4 10 7 00x 16 9 50x 16 5 7 00x 16 R 9 5 x 16 5 O R 3866799 3864594 4 56 8 75 x 16 5 8 75 x 16 5 O R 10 0 x 16 5 10 x 16 5 O R 3866919 3864594 4 56 7 50 x 16 7 50 x 16 O R 3866917 3864594 4 56 7 00x16 9 50x16 5 7 00x160 R A 9 5 x 16 5 O R 3866918 3864594 4 57 8 75 x 16 5 8 75 x 16 5 O R 10 0 x 16 5 10 x 16 5 O R 3866919 3864594 4 57 7 50 x 16 7 50 x 16 O R 3866917 3864594 4 57 7 00x 16 9 50x 16 5 7 00x 160 R 9 5 x 16 5 O R 3866918 3864594 4 338 FITTING PLUGi RETAINER SLEEVIE SEAL BUSHING Speedometer Driven Gear NOTE For detailed application use Speedometer Gear Chart 54 55 V2 74 Ton 1st Ser 2nd design 55 59 Ser 3 w 3 Spd exc HD 60 62 Ser 10 20 w 3 Spd exc H D 4 WD 3708147 1 90 2 O L 61 Ser 10 20 exc 4 WD 62 63 Ser 10 20 3748533 1 90 2 O l 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 17 7 50 x 16 8 00 x 17 5 8 00 x 18 5 68 For application see chart in group 4 337 2396888 1 4 25 12 teeth stamped S W and 448664 1971 CHEVROLET MOTOR DIVISION GENERAL MOTORS CORPORATION P A 31 REV 6 71 4 49 4 337 4 338