4 SPEED TRANSMISSION 4 329 ADAPTER Speedometer 4 56 JQ TE iortdgtaihd apggcatgo w ggggpee1dometer ear charts 4 OI S GI SXC 55 Ton W Snspdl HD 4 2 74 ratio 15 17 w 15 6 and 8 ply tires Spd 2nd Ser exc D D ratio 18 14 w 7 00 17 6 and 8 8 x 19 5 tires 57 58 Ton exc D D 1583876 1 22 74 7 00 x 17 6 8 ply tires 63 67 Ser 10 3 07 axle exc T H ratio 17 14 w 6 50 16 7 00 15 or 7 17 5 8 00 x 16 5 8 15 x 15 O R 6 ply tires 68 For application refer to chart in group 4 337 1563967 1 22 74 66 67 All 4 Spd w 4 56 4 89 axle 3890575 1 22 00 ADAPTER ASSY 7 75 x 14 7 75 x 15 8 25 x 14 8 55 x 14 8 15 x 15 tires 68 For application refer to chart in group 4 337 3925669 1 13 85 ADAPTER ASSY 68 For application refer to chart in group 4 337 3925671 1 13 50 ADAPTER ASSY 68 For application refer to chart in 4 337 group 6476735 1 21 72 ADAPTER ASSY 68 For application refer to chart in 4 337 group 6476736 1 23 71 ADAPTER ASSY 68 For application refer to chart in 4 337 group 6451928 1 28 87 ADAPTER ASSY 68 For application refer to chart in 4 337 group 1585657 1 22 74 ADAPTER ASSY 68 For application refer to chart in 4 337 group 1565452 1 23 82 ADAPTER ASSY 68 For application refer to chart in 4 337 group 1583624 1 19 95 ADAPTER ASSY 69 For application refer to chart in 4 337 group 3950348 1 14 60 ADAPTER ASSY 69 For application refer to chart in 4 337 group 3950350 1 14 60 ADAPTER ASSY 69 For application refer to chart in 4 337 group 3950352 1 14 60 ADAPTER ASSY 68 For application refer to chart in 4 337 group 3950354 1 14 60 ADAPTER ASSY 38 66 For models and comb see Group 4 337 ADAPTER UNIT ratio 17 16 stamped 1563871 68 For application refer to chart in group 4 337 1565812A R 21 08 Note 1 36 66 For models and comb see Group 4 337 ADAPTER UNIT ratio 17 15 stamped 1563872 68 For application refer to chart in group 4 337 1565813A R 21 08 Note 1 36 64 For models and comb see Group 4 337 ADAPTER UNIT ratio 16 17 stamped 1564409 68 For application refer to chart in group 4 337 1565814A R 22 74 Note 1 NOTE 1 Above adapters used as required in combination with speedometer gears to correct odometer reading for various tire sizes transmission and rear axle gear ratio combinations See group 4 337 68 For application refer to chart in 4 337 group 1584275 1 22 74 ADAPTER UNIT 68 For application refer to chart in 4 337 group 1584277 1 22 74 ADAPTER UNIT 69 For application refer to chart in 4 337 group 3925673 1 14 60 ADAPTER UNIT 4 330 KEY CUP Speedometer Adapter 38 70 All 867209 1 90 also included w adapters 1565811 12 13 14 1580273 3876 38 70 All 860187 1 1 48 CUP drive V4 32 x 1 Vi nickel bright 4 337 GEAR Transmission Speedometer Driven Gears only NOTE For detailed application use speedometer gear chart 59 62 V Ton w 3 38 4 11 axle exc H D 3708246 1 75 20 teeth nylon solid blue 55 57 V Ton w 0 D 3708143 1 75 24 teeth nylon solid yellow 63 66 Ser 10 w 4 11 axle 6 00 16 6 70 15 7 10 15 8 15 15 63 66 Ser 20 w 4 57 axle 8 17 5 7 50 15 8 19 5 64 65 G 10 w 3 73 axle 3860347 1 80 7 00 x 13 J 64 G 10 w 3 36 axle 7 00 x 14 1971 CHEVROLET MOTOR DIVISION GENERAL MOTORS CORPORATION P A 31 4 328 4 337 4 82 REV 6 71