70 3600 4200 4400 TH 400 8624016 I 9 60 PISTON forward clut 70 5400 6400 6600 T H 400 2BC 5624016 I 9 60 PlSTON forward ulutcn 70 71 4400 T H 400 exc O A I 8625384 1 11 I0 PISTCIN direct clutch Code X 70 71 4400 T H 400 0 A l 8626544 l 19 55 PISTON direct clutch Model OW 70 72 V C T H 400 8625505 I 10 70 PISTON forward clutcn 71 T l I 350 See Note 6261449 1 6 50 PISTON intermediate alutch uses Z0 springs NOTE When replacing production piston with this 30 post piston space Z0 springs and leave 10 post 71 3287 3677 87 4257 67 455 Eng T H 400 8625514 1 10 55 PISTON direct clutch 71 4800 4 BC T H 400 5625384 I 11 10 PISTDN direct clutch iCode X 71 4800 5400 6400 6600 6800 455 Eng 2 BC T H 400 8625614 1 10 55 PISYON direct clutch 71 3287 3677 87 4257 57 4400 455 Eng T l l 400 5624016 I 9 60 PISTDN forward clutch Models OD 0G OW 71 4800 350 Eng T H 400 8624018 l 9 60 PISYDN forward clutch Model OA 08 71 4800 5400 6400 6600 6800 T H 400 455 Eng 2 BC 8624016 1 9 60 PISTON forward clutch 72 F85 T H 350 8260197 1 PISTDN direct clutch 72 F85 T H 350 6261105 1 6 75 PISTGN low 8i rev clutch 72 FBS T H 350 6261116 1 6 50 PISTON fwd clutch 72 F85 T H 350 8281449 1 6 50 PISTUN intermediate 72 3200 350074200 455 Eng T l l 400 6624016 1 9 60 PISTON fwd clutch Model OD 0E 0W 72 5400 6400 6800 98 455 Eng T H 400 exc D E 8624018 1 9 60 PISTGN fwd clutch 72 5400 6400 98 455 Eng T H 400 D E 8625505 1 10 70 PISTON fwd clutch 72 T H 400 exc W30 8625514 1 10 55 PISTDN direct clutch 72 T H 400 w W30 8626544 1 19 55 PISTON direct clutch 72 T H 375 8624021 I 9 80 PISTON fwd clutch 72 T H 375 6625518 1 10 85 PISTDN direct clutch 72 T H 375 8624210 I 5 40 PISTON Inter clutch 72 T H 425 8825514 1 10 55 PISTOIII direct clutch NOTE Seal Pkg includes inner and outer oil seals 49 65 H T B6 9305 2 2 77 SEAL front rear w expanders 51 55 H T 8613276 1 3 30 SEAL reverse 56 R H T 5619305 2 2 77 SEAL front 8 rear w expanders 56 R H T 8613275 1 3 30 SEAL reverse 58 D H T 6 8818925 1 2 92 SEAL reverse 56 O H T 8516909 1 3 94 SEAL rear 56 O H T 7 8616918 1 2 35 SEAL over run 55 O H T 8 8816919 1 3 13 SEAL neutral 57 58 H T 8618925 1 2 92 SEAL reverse 57 60 H T 8616909 1 3 94 SEAL rear 57 60 H T 8616918 I 2 36 SEAL over run 57 60 H T 86I6919 1 3 l3 SEAL neutral 59 60 H T 8821965 1 2 69 SEAL reverse 81 63 F85 H T 8620935 1 4 18 SEAL front 81 63 F55 H T 8620938 I 3 57 SEAL reverse 61 64 H T exc F85 8620914 L 2 88 SEAL front 61 64 H T exc F85 8620918 l 2 63 SEAL neutral 61 64 H T exc F85 88209I7 1 2 92 SEAL reverse 64 69 J T 1356811 I 82 SEAL forward inner 64 69 J T 9 1362832 1 I 13 SEAL forward outer 65 72 T H 400 425 8623918 1 2 12 SEALVPKG intermediate 6489 J T 3799008 I 30 SEAL PKG reverse 85 72 T H 400 425 66239I7 2 2 95 SEAL PKG direct forward 69 71 T H 350 3947087 I 1 85 SEAL PKG direct 69 71 T H 350 3947088 I 1 69 SEAL PKG forward direct clutch piston inner Bi outer 72 F85 T H 350 3947086 I 1 69 SEAL PKG fwd direct clutch piston inner 8 outer 69 71 T H 350 3947089 I 41 SEAL PKG low Si rev 69 71 T H 350 3947088 1 2 28 SEAL PKG intermediate 72 FBS T H 350 3947088 1 2 26 SEAL PKG inter clutch piston 72 T H 375 8523917 2 2 95 SEAL PKG fwd 8 direct clutch piston 72 T l l 375 8623918 1 Z 12 SEAL PKG inter clutch piston I When installing front aluminum pistons on trans that previously had the original cast iron type pistons it is also necessary to install one additional 8603954 steel plate adjacent to the aluminum piston j1 DLD5MOB LE DIVISION GENERAL MOTORS CORPORAT ON 4 168 4 1 66 A Sz REV JAN 1972