3 SPEED TRANSMISSION I 1971 TRUCK SPEEDOMETER GEAR CHART CO NT 7 4 337 4 343 7 Gear Gear 1 4 329 Rear Speedometer Speedometer Adapter Axle Ratio Rear Tire Size Driven Drive Speedcmeter A ALL C W MUNCIE1 3 SPEED 350 396 CONT 3 73 8 00 x 16 5 8 75 x 16 50 R 6 50 x 16P 7 00 x 150 R 3987921 6261794 3 73 E78 x 15 F78 x 14 3987919 6261794 3950352 3 73 C78 X 14 v L 3987920 6261794 3950352 3 73 8 75 X 16 5 7 00 X 15 10 0 X 16 5 3987920 6261794 3950354 3 73 C78 X 140 FI 3987919 6261794 3905497 3 73 6 50 x 16P O R 6 50 x 16T 6 50 x 16T 0 R 7 00 x 16 9 5 x 16 50 R 10 x 16 50 R 3987920 6261794 3 73 7 00 X 160 13 7 50 X 16 7 50 X 160 R L 3987919 6261794 3 73 7 00 x 14 7 00 x 140 R 3987922 6261794 3950354 3 73 8 00x 19 5 3987921 6261794 3950348 3 73 8x19 50 R 7 00x 18 3987918 6261794 3 73 9 50 x 16 5 L 3987919 6261794 3950354 4 10 G78 x 15 3987920 6261794 3950352 L 4 10 8 00 X 16 5 6 50 X 16P 3987922 6261794 3925669 4 10 E78 x 15 E78 x 150 R F78 x 140 R 7 00 x 14 A A 7 00 x 140 R 1 398 7920 6261794 3905497 1 4 10 C78 x 14 3987922 6261794 3950352 I 4 10 F78 x 14 A 3987921 6261794 3950352 4 10 8 75 x 16 5 3987922 6261794 3950354 4 10 G78 x 150 R 8 x 16 50 R H78 x 15 H78 x 150 R 3987919 6261794 3905497 4 10 C78 x 140 R L L 3987921 6261794 3905497 I 4 10 8 75 x 16 50 R 6 50 x 16P O R 6 50 x 16T 6 50 x 16T O R 7 00 x 150 R 7 00 x 16 9 5 x 16 50 R 10 x 16 50 R 3987922 6261794 L 4 10 7 00 x 15 10 0 x 16 5 3987918 6261794 3905497 4 10 7 00 x 160 R 7 50 x 16 7 50 x 160 R 3987921 6261794 4 1 4 10 8 00 x 19 5 2 3987919 6261794 4 10 8 x 19 50 R 3987920 6261794 I 4 10 9 50 x 16 5 j 3 4 3987921 6261794 3950354 4 4 10 7 00 x 18 L 3987919 6261794 3950354 4 11 G78 x A15 G78 x 150 R 8 x 16 50 R H78 x 150 R V 3987920 6261794 V 3950352 1 4 11 8 00 x 16 5 6 50 x 16P 3987922 6261794 3925669 4 11 E78 x 15 F78 x 14 3987921 6261794 3950352 4 11 C78 xr 14 L L 3987922 6261794 3950352 1 4 11 8 75 X 16 5 3987922 62617946 3950354 1 4 11 E78 x 150 R F78 x 140 R 7 00 x 14 7 00 x 140 R 3987922 6261794 3905497 4 11 C78 x 140 R 3987921 6261794 3905497 4 11 8 75 x 16 50 R L 3987919 6261794 3950352 4 11 6 50 x 16P O R 6 50 x 16T O R 7 00 x 150 R I 7 00 x 16 9 5 x 16 50 R 10 x 16 50 R L I 3987922 6261794 4 11 6 50 x 16T 7 00 x 15 10 0 x 16 5 3987918 6261794 3905497 4 11 H78 x 15 Q 3987919 6261794 3905497 1 4 11 7 00 x 160 R 7 50 x 16 7 50 x 160 R 3987921 6261794 1 4 11 8 00 x 19 5 3987919 6261794 4 11 8 x 19 50 R 3987920 6261794 4 11 9 50 x 16 5 3987921 6261794 3950354 L 4 11 7 00 x 18 I 3987919 6261794 3950354 4 56 G78 x 15 G78 x 150 FI 8 x 16 50 R H78 x 15 5 H78 x 150 R 3987922 6261794 3950352 4 4 56 8 00 x 16 5 I 3987921 6261794 3905497 4 56 8 75 x 16 5 6 50 x 16T 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 3987920 6261794 3905497 A 4 56 E78 x 150 R F78 x 150 R 7 00 x 14 7 00 x 140 R 3987922 6261794 3905497 4 56 8 75 x 16 50 R 6 50 x 16P 3987921 6261794 3950352 I 4 56 6 50 x 16P O R 7 00x 1 6 9 5 x 1 6 50 R 3987920 6261794 3950352 1 4 56 7 00 x 160 R 9 50 x 16 5 3987919 6261794 3905497 4 56 7 50 x 16 7 50 x 160 R 1 3987919 6261794 3950352 1 4 56 8 00 x 19 5 V 3987921 6261794 4 56 8 x 19 50 R 7 00 x 18 3987922 6261794 4 A 4 57 G78 x 1 5 G78 x 150 R 8 x 16 50 R H78 x 15 H78 x 150 R 3987922 6261794 3950352 A 4 57 8 00 x 16 5 6 50 x 16P 3987921 6261794 3905497 4 57 8 75 x 16 5 6 50 x 16P O R 6 50 x 16T 6 50 x 16T O R 7 00 x 15 10 0 x 16 5 10 x 16 50 R 3987920 6261794 3905497 GM PARTS DIVISION GENERAL MOTORS CORPORATION CHEVROLET 72TL REV 5 79 I I 4 25 I 4 337 4 337