55 2 Q TON w 3 SPD hvy duty lst Ser 55 58 COMM w 3 SPD hvy duty 2nd Ser 17 I D x 5 thick 3719074 1 1 20 72 4 351 GEAR GEAR UNIT Transmission Main Drive Clutch 40 52 ALL w 3 SPD 19 helical teeth shaft dia 1 9 O L 609320 1 15 35 921 48 58 COMM UTIL w 4 SPD 17 helical teeth 9 length hole 1 I D 591501 1 16 25 975 53 PASS COMM w 3 SPD lst design 19 helical teeth shaft dia 2 z 9 O L 3699251 1 15 35 921 53 54 PASS exc P G 2nd design 53 54 COMM w 3 SPD 2nd design exc hvy duty 19 helical teeth shaft dia 9 O L 3705067 1 15 35 921 54 58 COMM w 3 SPD hvy duty 17 helical teeth 1 shaft dia x 9 O L 3709335 1 20 85 1251 56 PASS w 3 SPD close ratio lst design 55 56 CORV w 3 SPD close ratio lst design w synchronizer spring 3731500 1 20 50 RE 230 56 57 PASS w 3 SPD w synchronizer spring 3754281 1 20 50 1230 57 58 PASS CORV w 4 SPD 9 O L 3743447 1 28 60 1859 55 58 PASS 6 cyl exc O D 55 58 Ser 3 w 3 SPD 6 cyl exc hvy duty w synchronizer spring 3751881 1 15 20 912 55 57 PASS w 3 SPD 8 cyl exc close ratio 58 PASS w O D w synchronizer spring 3752836 1 15 35 921 258 PASS w 3 SPD 8 cyl exc 348 O D w synchronizer spring 3751422 1 15 50 930 58 PASS w 3 SPD 348 w synchronizer spring i 3751420 1 18 55 1130 56 58 CORV w 3 SPD 2nd design w synchronizer spring 3752417619 1 20 35 1221 131 47 COMM UTIL w 4 SPD exc L 1 GEAR UNIT consists ot 1 gear w 17 spur teeth 81 lengtl1 1 1 D and 1 591605 Retainer 3847311T 1 18 15 1089 NOTE Can be used to correct high gear disengagement on 1949 52 models but also requires l ea 591851 591852 spacers 24 7450247 rollers and either 1 3699258 PASS or 1 3699259 COMM mainshatt TNOTE When using 3847311 on 1931 37 models it will be necessary to cut oft the clutch gear bearing retainer sleeve at the shoulder QBNOTE When used on 1956 57 Corvette also use 3741458 Bearing Retainer NOTE When using on 1957 and prior models it is mandatory that retainer 3741458 be used 4 352 BEARING ROLLER SPACER RETAINER Transmission 0 Main Shaft Front Pilot to Main Drive Gear 31 47 COMM UTIL w 4 SPD exc LT roller Hyatt 93424C 141854 1 1 55 78 37 58 ALL CORV w 3 SPD exc hvy duty ROLLER front pilot bearing dia x 3 435844 14 14 85 14 43 48 58 COMM UTIL w 4 SPD 54 58 COMM w 3 SPD hvy duty ROLLER front pilot bearing Q dia x 7450010 A R 18 1 55 1EEI 78 57 58 PASS CORV w 4 SPD ROLLER UQ dia x 3743449 14 14 1 85 14I 93 53 58 ALL wl 3 SPD exc hvy duty ROLLER rear bearing x 7450247 24 24 90 24 45 48 58 COMM UTIL w 4 SPD SPACER pilot bearing roller 1 I D x 12 O D x QQ thick 591436 1 35 21 53 58 ALL CORV w 3 SPD exc hvy duty SPACER front roller 1 1 D x 1 O D x DQ thk 591851 1 05 4 12 53 58 ALL CORV w 3 SPD exc hvy duty SPACER rear roller I D x 1 O D x EQ thk 591852 1 05 4 12 48 58 COMM UTIL w 4 SPD RETAINER pilot bearing roller ring type 11 free dia x EQ wide 591443 1 10 6 4 355 BEARIN G Transmission Main Drive Gear Ball 29 31 AC AD AE w 3 SPD ND 3207 903207 1 5 436 32 36 ALL w 3 SPD exc CC DC EC FC ND 3208 w cup 590545 1 4 75 2138 37 58 ALL w 3 SPD exc hvy duty ND 43207 904912 1 6 10 305 54 58 ALL w 3 SPD hvy duty 57 58 PASS CORV w 4 SPD ND 43307 LIA 954869 1 4 408 31 47 COMM UTIL w 4 SPD exc LT ND 3209 L 954373 1 7 65 383 48 58 COMM UTIL w 4 SPD ND 41209 954358 1 9 40 4 70 55 56 CORV w 3 SPD 56 57 TAXI CAB w 3 SPD 58 PASS w O D 6 cyl 58 PASS w 3 SPD 8 cyl ND 41207 954998 1 7 30 LI 65 57 PASS w 3 SPD close ratio 57 58 CORV w 3 SPD ND 497207VLl250V 900533 1 9 35 468 nn msvnszu Novzmssn 1 wsa 435 4 345 4 355