54 63 ALL w 3 SPD H D 4 front EQ 1 D x 2 O D 1 int notch 3709325 1 70 54 63 ALL w 3 SPD H D rem lg 1 D x 2 O D 4 int notches 3709326 1 70 54 63 ALL w 3 SPD H D rear Z 1 D x 2 8 O D 2 int notches 3709327 1 70 54 63 ALL w 3 SPD H D 57 63 PASS CORVETTE w 4 SPD brg M 1 D x 1 O D x thick 3709324 A R 15 56 57 PASS w 3 SPD close ratio 58 59 PASS w 3 SPD 57 63 CORVETTE w 3 SPD 60 61 PASS w 3 SPD 8 cyl 62 63 PASS w 3 SPD roller brg thrust Z4 LD x 1 O D 3737814 2 15 56 57 PASS w 3 SPD close ratio 56 62 PASS CORVETTE 8 cyl 60 PASS 6 cyl lst design 63 PASS CORVETTE w 4 SPD 1 CLD 3740819 2 45 4 426 SPACER Transmission Countershaft Gear 38 47 COMM UTIL w 4 SPD exc LT reverse and driven 2 1 D x 2 OLD x i length 590505 1 20 38 55 COMM UTIL w 4 SPD lst Ser exc LT 55 59 Ser 3 w 4 SPD 2nd Ser 60 63 Ser 10 thru 30 w 4 SPD reverse 2 I D x Zig O D x length 590506 1 30 4 428 SHAFT Transmission Counter 3840 mss com 1 Z dm 1 7 1s ge1 w 2 um emu slot 41 53 PASS exc H D P G and i hole tor use only w hushed typo countergear 590827 1 3 40 54 63 ALL w 3 SPD H D 57 63 PASS CORVETTE w 4 SPD dia x 9 length 3709300 1 4 30 40 53 ALL w 3 SPD H D on PASS 54 63 ALL CORVETTE w 3 SPD exc H D 54 55 COMM w 3 SPD lst Ser exc H D Z4 dia x 7 O L tor use only w needle 55 59 Ser 3 w 3 SPD 2nd Ser exc H D type counter gear 3707179 1 3 40 41 42 COMM UTIL w 4 SPD w lst speed gear 14 T 2 grooves on hub near gear 591263 1 4 421 4 429 KEY NUT Transmission Countersrbah Gear 38 55 COMM UTIL w 4 SPD lst Ser exc LT 55 59 Ser 3 w 4 SPD 2nd Ser 60 63 Ser 10 thru 30 w 4 SPD 1 dia x 51 length 591394 4 06 Not required in this group See group 4 525 NUT 286075 60 4 430 GEAR GEAR ASSY Transmission Reverse Idler w bushings 54 63 ALL w 3 SPD HD 3709341 1 11 60 41 47 COMM UTIL w 4 SPD 16 T 26 T identity by two grooves in hub 591264 1 15 30 48 55 COMM UTIL w 4 SPD Ist Ser 55 59 Ser 3 w 4 SPD 2nd Ser 60 63 Ser 10 thru 30 w 4 SPD 30 T 19 T x 4 long 59141 0 1 15 30 57 60 PASS CORVETTE w 4 SPD front notched type 3746273 1 25 95 57 59 PASS w 4 SPD rear 3771768 1 32 30 60 63 PASS CORVETTE w 4 SPD front 23 dia splined type 3774904 1 24 35 40 57 ALL CORVETTE w 3 SPD exc H D 58 59 Ser 3 w 3 SPD exc H D 4 WD 60 62 Ser 10 20 w 3 SPD exc H D 58 60 PASS w 3 SPD 6 cyl 58 60 PASS w O D 8 cyl GEAR ASSY 16 T 15 T dia bore 3782123 1 10 05 58 60 PASS w 3 SPD 8 cyl exc O D 61 PASS w 3 SPD exc O D 63 PASS CORVETTE w Z3 SPD GEAR ASSY 17 T 15T 3759842 1 10 05 l E Mm 739 4 423 4 430 General Motors Corporation