4 SPEED TRANSMISSION 1968 LIGHT DUTY TRUCKS SPEEDOMETER GEAR CHART 4 343 4 337 REAR GEAR GEAR 4 329 4 328 AXLE TIRE SIZE AND TYPE SPEEDO SPEEDO ADAPTER FITTING RATIO DRIVE DRIVEN SPEEDO ASSY TRANSFER CASE 4 WD 3 73 7 75 x 15 8 15 x 15 0 R 2397307 2396889 3 73 8 15 x 15 exc 0 R I 2397307 3925669 2396889 3 73 7 00 x 15 6 50 x 16 8 00 x 16 5 7 00 x 17 5 2397307 3925671 2396889 4 57 7 00 x 16 O R 7 50 x 16 9 50 x 16 5 8 00 x 17 5 2397307 2396888 4 57 7 00 x 17 5 8 75 x 16 5 2397307 3925669 2396888 4 57 7 00 x 17 exc O R 2397307 3925671 2396888 4 57 7 00 x 17 O R 7 50 x 17 8 00 x 19 5 2397307 2396889 4 57 8 00 x 16 5 7 00 x 17 5 0 R 2397307 2396890 4 57 7 00 x 16 8 00 x 17 5 2397307 3925671 2396890 4 SPEED TRANSMISSION WARNER 3 36 6 95 X 14 3708145 3860345 3 36 7 00 X 14 O R 3708145 3860346 1565813 3 36 7 00 X 14 exc O R I 7 35 X 14 3708145 3860347 1565813 3 73 7 X1 X 14 exc 0 R I 3708145 3860345 1565814 3 73 7 75 X 15 3708145 3860345 3 73 7 00 X 14 O R 7 35 X 14 0 R 8 15 X 15 3708145 3860346 3 73 6 95 X 14 7 35 X 14 exc 0 R I 3708145 3860347 3 73 8 00 X 16 5 3708145 3860347 1565814 4 11 7 00 X 14 8 15 X 15 3708145 3860347 1565814 4 11 7 75 X 15 8 00 X 16 5 3708145 3860347 4 11 6 95 X 14 7 35 X 14 exc 0 R 3708145 3860348 1565814 r 4 11 7 35 X 14 0 R 7 00 X 14 O R 3708145 3860348 4 SPEED TRANSMISSION MUNCIE 3 07 7 75 X 15 3866742 3866798 1565813 3 07 7 00 X 15 6 50 X 16 7 00 X 17 5 3866742 3866798 1563967 3 07 8 15 X 15 exc 0 R 3866742 3866799 1565813 3 07 8 15 X 15 0 R 6 50 X 16 8 00 X 16 5 3866742 3866799 1563967 3 73 7 00 X 15 6 50 X 16 7 00 X 17 5 3866742 3866798 3 73 7 75 X 15 8 15 X 15 O R 8 00 X 16 5 3866742 3866799 3 73 8 15 X 15 exc 0 R I 3866742 3866799 1565814 3 73 6 50 X 16 exc 0 R I 3866742 3866918 1565813 4 10 7 I X 17 3866742 3866798 L i 1971 CHEVROLET MOTOR DIVISION GENERAL MOTORS CORPORATION P A 31 4 337 4 337 4 84 REV 6 71