454 ENGINE ASSEMBLY GMC GROUP 0 106 BEARING UNIT Crankshaft Rear 1 Upper and 1 Lower See Group 0 096 for model application 0 107 PIN Crankshaft Bearing Cap V 73 78 All I H C 3836903 A R 33 PIN dowel Vt dia x n long V 0 738 8 1610 0 137 SEAL Crankshaft and Rear Bearing Cap Oil 73 77 All M H C 3962863 2 5 00 SEAL 8 1670A i 78 All MHC 454 460571 2 5 00 SEAL cr shf rr oil 8 1670A 0 153 SHIM UNIT Crankshaft Bearing Cap 73 78 All NI H C 3877468 A R 3 70 SHIM UNIT caps 1 4 8 1819 73 78 All N H C 3877476 A R 370 SHIM UNIT rear 8 1819 0 206 COVER ASM PIN SCREW Crankcase Front End 73 78 All N H C 330850 1 15 20 COVER ASM 8 2200A 73 78 All M H C 3836903 2 33 PIN cover dia x long 0 738 8 23I5D 73 78 All M H C 3817006 10 28 SCREW w Iockwasher cover 0 559 8 2010D 0 207 GASKET Crankcase Front End Cover 73 78 All M H C 3935449 1 80 GASKET 8 2230A 0 213 SEAL Crankcase Front End Cover 73 78 All M H C 3860095 1 4 45 SEAL 3 O D stamped 3860095 8 1662E 0 21 9 POINTER Timing 73 75 All M H C 76 78 C 1 2 3 77 78 P 3 exc M H C 3992073 I 93 POINTER 8 2327L 76 P 3 76 78 M H C 458608 1 2 10 POINTER 8 2327L 0 269 HEAD Cylinder 73 All M H C 353047 2 270 00 HEAD w guide and cyl valve 8 0570A 74 All M H C GMC Only 336780 2 HEAD w guide and cyl valve 8 0570A 75 78 All N H C w NB 2 14025175 2 243 00 HEAD w guide cyl valve 8 0570A Q 75 78 All M H C exc NB 2 352625 2 270 00 HEAD w guide cyl valve 8 0570A 0 289 GASKET GASKET UNIT Cylinder Head NOTE I Unit consists oh 2 Cylinder head gaskets 2 Valve rocker cover gaskets 2 Inlet manifold side I gaskets 2 Inlet manifold end gaskets I Water outlet gasket I Ignition timer distributor gasket 2 Exhaust pipe packings B Valve stem oil seals and I Inlet valve stem oil seal unit NOTE 2 Includes I Heat valve gasket NOTE 3 Unit consists of 2 Cylinder head gaskets 2 Inlet manifold side gaskets 2 lnlet manifold end gaskets I Water outlet gasket I Ignition timer distributor gasket 2 Exhaust pipe packings and I6 Valve stem oil seals NOTE 4 This unit does not contain rocker cover gasket Use silicone rubber sealant for engines with BTV formed in place gasket 73 78 All M H C 330860 2 5 05 GASKET 8 0630A 73 74 C 2 Cab 79 74 CP 3 M H C 75 76 C 1 Cab w H D Chassis exc NB 2 75 76 C I Sub exc N8 2 75 76 CP 2 3 M H C exc NB 2 465400 1 64 00 GASKET UNIT Notes I and 2 8 0630A 73 74 C 1 73 74 C 2 Sub 470102 I 64 00 GASKET UNIT Notes 1 and 2 8 0630A 7576 C 1 Cab w NB 2 exc H D Chassis 75 76 C 1 Sub w NB 2 75 76 C 2 w N8 2 75 76 CP 3 M H C w NB 2 470I0 2 66 25 GASKET UNIT Note 1 8 0630A 77 All M H C w NB 2 470105 I 60 00 GASKET UNIT Note 3 4 8 0630A 77 All M H C exc N8 2 78 C1 03 454 w H D Chassis exc Calif 470106 I 60 00 GASKET UNIT Notes 3 4 8 0630A 78 All 454 Calif 470105 1 60 00 GASKET UNIT Notes 3 4 8 0630A 0 293 BOLT PIN Cylinder Head 73 78 All M H C 3877669 8 1 35 BOLT short 2 O L raised cross on head 8 0600A WAREHOUSING AND I I TRlBUTlONDlVIS 0N OF GENERAL MOTORS CORPORATlDN LT TRUCl 5I REV 2 83 073 0 106 0 293