SPICER 5 SPEED TRANSMISSION 1971 72 TRUCK SPEEDOMETER GEAR CHART Cont 4 343 4 337 GEAR 4 330 REAR REAR TIRE SIZE GEAR SPEEDO 4 329 KEY AXLE SPEEDO DRIVE ADAPTER SPEEDO RATIO DRIVEN SPICER A SPEEDO ADAPTER 5 SPEED SPICER 3000 X l 4 86 7 50 x 20 7 50 x 20 0 R 3756924 3760297 6451929 867209 4 86 8 25 x 20 3756922 3760297 6451929 867209 4 86 8 25 x 20 0 R 3756920 3760297 6451928 867209 4 86 9 00 x 20 10 00 x 20 9 00 x 20 0 R 3756920 3760297 6451929 867209 5 57 7 50 x 20 3756926 3760297 6451928 867209 5 57 8 25 x 20 3756924 3760297 6451930 867209 5 57 7 50 x 20 0 R 3756924 3760297 1565452 867209 5 57 8 25 x 20 O R 3756926 3760297 6451930 867209 5 57 9 00 x 20 9 00 x 20 0 R 3756926 3760297 6451929 867209 5 57 10 00 x 20 3756924 3760297 V 6451929 867209 5 83 7 00 x 20 3756926 3760297 1565452 867209 5 83 7 50 x 20 3756920 3760297 1584274 867209 A 5 83 8 25 x 20 3756926 3760297 6451930 867209 5 83 7 50 x 20 O R 3756920 3760297 5 83 8 25 x 20 0 R 3756922 3760297 1584278 867209 5 83 9 00 x 20 3756922 3760297 1565452 867209 5 83 9 00 x 20 0 R 3756920 3760297 1584278 867209 5 83 10 00 x 20 3756926 3760297 6451929 867209 5 83 11 00 x 20 3756922 3760297 6451930 867209 I 6 14 7 00 x 20 8 25 x 20 0 R 7 50 x 20 7 50 x I 20 0 R 3756920 3760297 6 14 8 25 x 20 9 00 x 20 4 A 0 R 3756920 3760297 1584274 867209 4 6 14 9 00 x 20 3756924 3760297 1565452 867209 6 14 10 00 x 20 3756920 3760297 1584278 867209 I 6 14 11 00 x 20 3756924 3760297 6451930 867209 3 6 17 7 00 x 20 8 25 x 20 O R 7 50 x 20 7 50 x 20 O R 3756920 3760297 6 17 8 25 x 20 9 00 x 20 O R 3756920 3760297 1584274 867209 6 17 9 00 x 20 3756924 3760297 1565452 867209 6 17 10 00 x 20 3756920 3760297 1584278 867209 6 17 11 00 x 20 3756924 3760297 6451930 867209 6 40 7 00 x 20 7 50 x 20 7 50 x 2 0 0 R 3756922 3760297 6 40 8 25 x 20 8 25 x 20 0 R 9 00 x 20 0 R 3765920 3760297 I 6 40 9 00 x 20 3756926 3760297 1565452 867209 z 6 50 7 00 x 20 8 25 x 20 0 R 7 50 x 20 7 50 x 20 O R 3756922 3760297 6 50 8 25 x 20 9 00 x 20 O R 3756920 3760297 6 50 9 00 x 20 10 0 x 20 O R 3756926 3760297 1565452 867209 V 6 50 10 00 x 20 3756920 3760297 1584274 867209 6 50 11 00 x 20 3756926 3760297 6451930 867209 6 67 8 25 x 20 3756926 3760297 1584278 867209 6 67 8 25 x 20 0 R 3756922 3760297 I 6 67 9 00 x 20 9 00 x 20 O R 10 0 x 20 O R 3756920 3760297 6 67 10 00 x 20 3756926 3760297 1565452 867209 6 67 11 00 x 20 3756922 3760297 1584278 867209 7 17 7 00 x 20 8 25 x 20 0 R 7 50 x 20 7 50 x 20 O R 3756926 3760297 7 17 8 25 x 20 9 00 x 20 0 R 3756924 3760297 7 17 9 00 x 20 10 0 x 20 V 0 R 3756922 3760297 GM PARTS DIVISION GENERAL MOTORS CORPORATION CHEVROLET 72TM 4 343 4 343 1 4 142 REV 5 79