POWERGLIDE TRANSMISSION 4 256 GOVERNOR ASSY WEIGHT ASSY GEAR UNlT GASKET RlNG PIN PLUGgSCREW SPRING VALVE BODY ASSY WASHER SHAFT TI 8hSmISSl0l1 60 62 All w P G exc 327 3771946 1 19 30 63 70 Ser 10 20 G 10 20 w P G 3850510 1 19 30 Note 1 NOTE 1 Not used on 283 307 engines when the transmission code ends with the Letter L 64 65 All w P G exc 327 H Per 409 2nd design 66 70 Ser 10 20 G 10 20 w P G 3850512 1 1 70 WEIGHT ASSY governor 55 62 All w P G exc 327 3711625 1 1 80 GEAR UNIT w 1 pin 53 62 All w P G exc 327 3702696 1 10 GASKET cover one 3 four holes 63 70 All w P G 3818935 1 10 GASKET governor use w governor w casting No 3818876 67 70 All w P G 3890524 1 20 GASKET trans to gov support body 53 70 AII w P G 3689808 2 1 00 RING hub oil seal 4 169 63 All w P G exc 409 327 H Pen 64 70 AII w P G 3798068A R 05 RING inner weight to conn shaft retainer governor valve to conn shaft retainer dia 53 61 All w P G 455346 1 05 PIN gear and sleeve Vu x 8 939 53 62 AII w P G exc 327 3702148 2 05 PIN weight 090 dia x 1 V 55 62 All w P G 3771956 1 10 PLUG governor thrust 63 70 AII w P G 3789048 1 10 SCREW hub drive 63 70 All w P G 3856672 4 10 SCREW governor body to trans governor hub screw and lock washer V4 20 x 1 062 63 66 AII w P G 3815089 2 05 SPRING governor damping 63 64 All w P G 1st design 3830228 1 50 VALVE governor use w governor w casting No 3818876 64 70 AII w P G 2nd design 3850516 1 50 VALVE governor 67 70 AII w P G 3996642 1 9 40 BODY ASSY trans gov support 67 70 AII w P G 3905432 1 15 WASHER governor damping 63 All w P G exc 409 327 H Per 64 AII w P G 1st design 3789049 1 30 SHAFT governor connector 64 70 All w P G 2nd design 3850517 1 30 SHAFT governor connector 4 265 BODY ASSY GASKET RING SCREEN ASSY Transmission Low and Drive Valve POWERGLIDE 55 62 All 8 cyl 3750697 1 23 15 55 62 All exc 327 3709088 1 05 GASKET body end plate 60 61 All exc 327 3745127 1 10 GASKET low and drive valve body 53 62 All exc 327 9415476 1 10 RING regulator valve cap retainer WB O D 8 934 63 70 All 3846834 1 40 SCREEN ASSY trans throttle valve feed 4 278 LEVER ASSY SEAL SHIELD WASHER Transmission Throttle Valve 53 62 All w P G exc 327 3709012 1 2 00 inner 63 70 All w P G 3789138 1 1 75 inner 53 62 All w P G exc 327 3702648 1 05 SEAL lever shaft D x Vie O D x z thk 63 69 All w P G 3727391 1 05 SEAL lever shaft 0 ring 7 D 53 62 All w P G exc 327 3702701 1 05 SHIELD lever shaft seal 63 69 All w P G 3978774 1 10 WASHER throttle valve control shaft 4 317 EXTENSION ASSY Transmission Rear Main Bearing 64 All w P G 65 66 Ser 10 20 w P G 3789079 1 13 55 w bushing aluminum 9 long 63 Ser 10 20 w P G 3793803 1 15 00 w bushing 64 70 G 10 20 w P G 3887007 1 24 95 w bushing 67 70 Ser 10 20 w P G 3864431 1 14 35 w bushing 4 318 SEAL ASSY Transmission Rear Bearing Retainer Vg y4 TOD 60 63 Ser 10 20 w 3 Spd P G exc H D 64 65 All w P G 64 65 Ser 10 20 w 3 Spd exc H D I 66 69 All 3871649 1 2 95 extension of oil 3 1971 CHEVROLET MOTOR DIVISION GENERAL MOTORS CORPORATlON P A 31Y 4 256 4 318 4 138 REV 6 71