1946 70 ENGINE ASSEMBLIES 0 289 GASKET RING Cylinder Head Con t 69 70 All 350 exc L P Gas 356805 1 GASKET UNIT 62 89 Ser 50 60 4 53 5116293 1 RING seal large 62 67 All 3 53 6V 53 5116292 2 RING seal large 62 69 All 3 53 4 53 6V 53 5116290A R RING water seal 62 68 All 3 53 4 53 6V 53 5116122A R RING oil seal 62 65 All 3 53 4 53 6V 53 66 67 All 3 53 6V 53 5121207 A R RING ctr water hole seal Not required in this group See group 3 304 5160037 RING 0 293 CIUIP 1 NOZZLE NUT PIN PLUG STUD y II I Bf 68 NOTE 1 Required when any 1959 6 cyl block or short motor is installed in 1955 58 models reduces full pressure oiling to restricted flow Also requires plug in Group 1 531 at right hand center bolt location NOTE 2 Use with cylinder head with cast in oil trough on outer edge 38 62 All 6 cyl exc Diesel 3835811 A R long Z 13 x 4 sa raised circle on J hd 38 62 All 6 cyl exc Diesel 3835812A R short 13 x 3 2 raised circle on I hd 55 59 All 6 cyl 3764578 1 Z 13 x 4 Z drilled Note 1 55 70 All 8 cyl exc 322 348 366 i 409 427 3734594 18 long 14 x 3 55 70 All 8 cyl exc 322 348 366 I 409 427 3704796 16 short 14 x 1 56 59 All 322 380252 18 long 1 14 x 4 56 59 All 322 86 70 All 366 427 3877669 8 short 2 0 L raised cross on tcp of r head 58 65 All 348 409 3735721 20 long 7 i 14 x 3 4 58 65 All 348 409 3735722 A R short 14 x 3 M 59 70 All 283 307 327 350 3767468 4 medium I 14 x 3 circle on top of head Note 2 y 62 69 All 3 53 4 53 6V 53 5121263A R 11 x 6 4 r 63 70 All 6 cyl exc Diesel 3788417A R z 13 x 3 u 66 70 All 366 427 3877668 24 long 4 O L raised cross on top of head 62 66 Ser 80 6V 53 5123352 1 COVER water hole 4 holes s 63 86 Ser 60 w Air Equip 4 53 67 68 Ser 60 w H D Air Compressor 4 53 5115097 1 COVER water jacket hole 62 67 All 3 53 4 53 6V 53 5136610 1 COVER waterlhole 62 66 All 3 53 4 53 6V 53 65 66 Ser 50 60 D35 1 D DH478 65 Ser 80 exc Tilt 67 68 All 3 53 4 53 D DH478 69 Ser 50 DH478 2296781 1 CUP eigher starting 62 69 All 3 53 4 53 6V 53 5119293A R NOZZLE water double jet 59 62 All w Air Equip 261 60 62 All w P S 261 9417614A R NUT z 20 copper color 8 915 65 69 All D351 D DH478 2367703 2 PIN cyl head to block 66 70 All 366 427 3894327 4 PIN special z I D x diameter I 62 69 All 3 53 4 53 6V 53 5151449A R PLUG governor control link adapter hole cup type 62 69 All 3 53 4 53 6V 53 5154453A R PLUG 16 slotted headless 65 66 Tilt D351 D DH478 555679 2 PLUG core hole 63 88 Tilt 230 250 292 69 Ser 40 50 292 exc Tilt 9787075 1 STUD No 2 L H Z 13 16 x 4 Not required in this group See 4 group 2 277 6255782 WASHER NOTE 1 Required when any 1959 6 cyl block or short motor is installed in 1955 58 models reduces full pressure oiling to restricted flow Also requires plug in Group 1 531 at right hand center bolt location 0 296 VALVE Inlet Refer to Price Schedule P A 26 for applicable prices Extreme care should be exercised when selecting replacement Inlet and Exhaust Valves for 1963 Ser 60 327 cu in Engines Approximately 1200 Cylinder Heads were used in production which have one 1 or more 003 0 5 Valves These Cylinder Heads may be identified by the numeral 3 stamped directly below the casting number Aluminized STD 003 015 0 S 020 0 S 030 O S 040 0 8 V 41 49 All 50 53 All 216 3688065 A 50 52 All 235 3835519 GM PARTS DIVISION GENERAL MOTORS CORIPOFIATION CHEVROLET 72TM REV 5 79 0 13 0 289 0 296 I V V H ss A