1 4 SPEED TRANSMISSION 1971 TRUCK SPEEDOMETER GEAR CHART CONT A ss1 mss I Gar G r 4 329 R r Sp9 d m t r Sp d0m m Adapt r AxI Ratio R r Tin Siu J Drlvhn Dr1v Sp don t r DANA TRANSFER CASE CONT A 3 70 E78 x 15 F78 x 14 E78 x 150 R F78 x 140 R 7 00 x 14 7 00 x 140 R Q 68031 64593 3 70 C78 x 14 C78 x 140 R 39 68032 64593 k I 3 70 8 75 x 16 5 8 75 x 16 50 R 7 00 x 150 R 68031 64593 25673 3 70 6 50 x 16P O R 6 50 x 16T O R 9 5 x 16 50 R 10 x 16 50 R 68032 64593 50348 3 70 6 50 x 16T 7 00 x 15 7 00 x 160 R A 10 0x 16 5 68030 64593 25671 A 3 70 7 50 x 16 7 50 x 160 R 68031 64593 50348 1 3 70 8 00 x 19 5 68031 64593 50350 3 70 8 x 19 50 R 7 00 x 18 68030 64593 50348 3 70 9 50x 16 5 x 68030 64593 25673 3 73 G78 x 15 68030 64593 50354 3 73 8 00 x 16 5 G78 x 150 R 8 x 16 50 R 3 I 8 75 x 16 50 R 6 50 x 16P H78 x 15 H78 x 150 R 7 00 x 150 R 68030 64593 4 l 3 7 3 E78 x 15 F78 x 14 E78 x150 R f 4 F78 x 140 R 7 00 x 14 7 00 x 140 R 68031 64593 3 73 8 75 x 16 5 7 00 x 15 10 0 x 16 5 68031 64593 25673 3 73 6 50 x 16P O R 7 00 x 16 9 5 x 16 50 R 68032 64593 50348 3 73 6 50 x 16T 6 50 x 16T O R 10x 16 50 R 68030 64593 25671 3 73 7 00 x 160 R 68030 64593 25673 3 73 7 50 x 16 7 50 x 160 R 68031 64593 50348 1 3 73 8 00 x 19 5 68031 64593 50350 A 3 73 8 x 19 50 8 7 00 x 18 A 68030 64593 50348 Y 3 73 C78 x 14 C78 x 140 R 68032 64593 I 4 10 C78 x 140 R L 68030 64593 50352 4 10 8 00Vx 16 5 6 50 x 16P 68031 64593 50354 I 4 10 E78 x 15 F78 x 14 7 00 x 140 R A 68032 64593 25669 A 4 10 C78 x 14 4 68030 64593 50497 4 10 G78 x 15 G78 x 1503 8 x 16 50 R A f E78 x 150 R F78 x 140 R H78 x 15 H78 x 150 R 68032 64593 A 4 10 8 75 x 16 5 8 75 x 16 50 R 6 50 x 16P O R V 6 50 x 16T 6 50 x 16T O R 7 00 x 15 7 00 x 150 R 10 0 x 16 5 10 x 16 50 R 68031 64593 4 10 7 00 x 16 7 00 x 160 R 7 50 x 160 R 49 50 x 16 5 9 5 x 16 50 R 68030 64593 4 10 7 50 x 16 V 68031 64593 25673 4 10 7 00 x 14 64593 50354 4 10 8 00 x 19 5 7 00 x 18 68030 64593 25673 I 4 10 8 x 19 50 R 68032 64593 50348 4 11 G78 x 15 G78 x 150 R 8 x 16 50 R V F78x 140 R H78 x 15 H78 x 150 R 68032 64593 4 11 8 00 x 16 5 6 50 x 16P 68031 64593 50354 4 11 E78 x 15 F78 x 14 7 00 x 14 7 00 x 140 R 68032 64593 25669 4 11 8 75 x 16 5 8 75 x 16 50 R 6 50 x 16P O R 6 50 x16T 6 50 x 16T O R 7 00 x 15 A 7 00 x 150 R 10 0 x 16 5 10 x 16 50 R 68031 64593 4 11 C78 x 14 C78 x 140 R 68030 64593 05497 4 11 E78 x 150 R 68032 64593 50354 1 4 1 1 7 00 x 16 68030 64593 50354 4 11 7 00 x 160 R 7 50 x 160 R 9 50 x 16 5 9 5 x 16 50 R 68030 64593 4 11 7 50 x 16 68031 64593 25673 i 4 11 8 00 x 19 5 68030 593 25673 4 11 8x 19 50 R V 68032 1593 50348 4 56 G78 x 15 G78 x 150 R 8 x 16 50 R H78 x 15 H78 x 150 R 68030 64593 05497 4 56 8 00x 16 5 6 50 x 16P 6 68030 64593 50352 4 56 E78 x 15 F78 x 14 Q 68031 64593 05497 4 56 C78 x 14 V 68032 64593 05497 1 4 56 8 76 x 16 5 8 75 x 16 50 R 7 00 x 150 R 68032 64593 25669 4 56 E78 x 150 R F78 x 140 R 7 00 x 14 7 00 x 140 R 68031 64593 50352 GM PARTS DIVISION GENERAL MOTORS CORPORATION CHEVROL ET 72TL j 1 REV 5 79 1 4 83 4 337 4 337