I POWERGLIDE TRANSMISSION 5 1971 TRUCK SPEEDOMETER GEAR CHART CONT I 4 067 4 340 1 1 I Geer Gear 4 329 Rear 1 Speedemeter Speedometer Adapter Axle Ratio Rear Tire Size Driven I Drive V Speedorneter 1 Au W POWERG uns conrr 1 1 I 1 3 70 8 x 19 50 R 3987918 6261794 1 1 3 70 7 00 x 18 I I I 3860346 6261795 50350 3 73 G78 x 15 G78 x 150 R 8 x 16 50 R F78 x 140 R H78 x 15 H78 x 150 R Y 3987922 6261794 I 3 73 8 00 x 16 5 8 75 x 16 50 R 6 50 x 16P 1 7 00 x 150 R 87921 6261794 3 73 E78 x 15 F78 x 14 E78 x 150 FI 1 I 7 00 x 14 7 00 x 140 R 3860346 6261795 3 73 C78 x 14 C78 x 140 R 3860347 I 6261795 1 3 73 8 75 x 16 5 7 00 x 15 10 0 x 16 5 1 3987920 5251794 3950354 3 73 6 50 x 16P O R 6 50 x 16T 6 50 x 16T O R I 7 00 x 16 9 5 x 16 50 R 10 x 16 50 R 87920 6261794 1 3 73 7 00 x 160 R 7 50 x 16 7 50 x 160 R 3987919 15251794 3 73 8 00 x 19 5 1 87921 5251794 3950348 3 73 1 8 x 19 50 F1 7 00 x 18 3987918 5251794 1 3 73 9 50 x 16 5 3987919 5251794 50354 4 10 G78 x 15 G78 x 150 R 8 x 16 50 R 1 I H78 x 15 H78 x 150 R 4 3860347 6261795 1 1 4 10 8 00 x 16 5 8 75 x 16 50 R 6 50 x 16P 1 7 I 7 00 x 150 R 3860346 1 6261795 4 10 E78 x 15 F78 x 14 E78 x150 R 1 F78 x 140 R 7 00 x 14 7 00 x 140 R 3860348 6261795 4 10 C78 x 14 39879221 6261794 3950352 4 10 1 8 75 x 16 5 3987922 6261794 3950354 1 A 4 10 C78 x 140 R 3987921 6261794 3905497 1 4 10 6 50 x 16P O R 6 50 x 16T 6 50 x 16T O R 7 00 x 16 9 5 x 16 50 R 10 x 16 50 R 3987922 6261794 I I 1 4 10 7 00 x 15 10 0 x 16 5 3987918 6261794 3905497 4 10 1 7 00 x 160 R 7 50 x 16 7 50 x 160 R 3987921 6261794 1 4 10 8 00 x 19 5 3987919 6261794 1 4 10 8 x 19 50 R 3987920 626 1794 4 10 19 50 xI 16 5 3987921 6261794 50354 I 4 10 7 00 x 18 3987919 1 6261794 50354 1 4 11 G781x 15 G78 x 150 R 8 x 16 50 R 1 H78 x 15 H78 x 150 R 3860347 6261795 4 4 11 1 8 00 x 16 5 I 1 V 87922 6261794 25673 4 11 E78 x 15 IF78 x 14 E78 x 150 R I F78 x 140 R 7 00 x 14 7 00 x 140 R Q 3860348 6261795 4 11 C78 x 14 39879221 6261794 3950352 1 4 11 8 75 x 16 5 8 75 x 16 50 R 6 50 x 16P 1 7 00 x 150 R 1 1 3860346 6261795 1 4 11 C78 x 140 R 87921 6261794 05497 4 11 6 50 x 16P O R 6 50 x 16T O R 7 00 x 16 1 9 5 x 16 50 R 10 x 16 50 R 1 87922 6261794 I 4 11 6 50 x 16T 7 00 x 15 10 0 x 16 5 3987918 6261794 05497 4 11 7 00 x 160 R 7 50 x 16 7 50 x16O R I 87921 6261794 4 11 8 00 x 19 5 3987919 6261794 1 4 11 8 x 19 50 R I 87920 I 6261794 1 4 11 9 50 x 16 5 87921 6261794 3950354 1 4 11 7 00 x 18 1 87919 6261794 3950354 4 56 G78 x 15 G78 x 150 6 8 x 16 50 R 1 1 H78 x 150 R 3987922 6261794 3950352 4 56 8 00 x 16 5 6 50 x 16P 3860348 6261795 3950354 1 A 4 56 E78 x 14 F78 x 14 7 00 x 14 1 1 7 00 x 140 R I 1 3860346 6261795 3950352 1 4 56 C78 x 14 3860347 6261795 05497 1 4 56 8 75 x 16 5 8 75 x 1 6 50 R 6 50 x 16P O R 1 6 50 x 16T 6 50 x 16T O R 7 00 x 15 7 00 x 150 8 10 0 x 16 5 10 x 16 50 n 3860348 6261795 f 4 56 E78 x 150 12 F78 X 140 11 J 3087022 6261794 3905497 4 56 C78 x 1401 R 3860347 6261795 3950352 1 4 56 H78 x 15 1 3860348 6261795 25669 1 4 56 7 00 x 16 7 00 x 160 8 9 501x 16 5 I 9 5 x 16 50 R 3860347 6261795 1 GM PARTS DIVISION GENERAL MOTORS CORPORATION CHEVROLET 72TL i I REV 5 79 7 4 127 1 4 337 4 337