58 All 348 3770309 A R 10 BOLT w washer cover to plate V 20 x I 55 62 All 6 cyl exc Diesel 3770308 8 10 BOLT w washer cover attaching V 20 x V 62 All 283 327 3 817006 1 05 BOLT attach V 20 x V ext Iockwasher 0 679 62 Ser 80 Diesel 427558A R 15 BOLT frt cover attach V 16 x 1 8 900 65 68 All D351 D DH478 2392575 A R 05 BOLT w washer accessory cover to frt cover 65 69 All D351 D DH478 2449570 A R 32 BOLT w washer frt cover attach and oil pump to cylinder and case 65 69 All D351 D DH478 2470933 4 22 BOLT w washer frt cover to cyl case cap 66 69 All D351 D DH478 2479330 1 70 BOLT front cover attach 65 69 All D351 D DH478 2449600 1 85 CAP frt cover to cyl case 55 62 All 6 cyl exc Diesel 3835842 1 15 LOCK frt cover bolt 62 66 Ser 80 6V 53 5119477 1 1 45 NIPPLE cover Va O D x 1 0 L 55 70 All 8 cyl exc 322 3836903 2 05 PIN V dia x long Note 2 O 738 NOTE 2 Refer to Parts and Accessories Catalog P A 30 for additional Pins Group 8 939 65 68 All D351 D DH478 2383799 1 15 PIN timing 62 66 Ser 80 6V 53 5115214 2 20 PLUG frt cover lower 1 251 62 64 Ser 60 4 53 65 66 Ser 50 3 53 67 Ser 40 4 53 5157412 4 19 SPACER eng lifter bracket eng front cover lower to cylinder block 0 207 GASKET Crankcase Front End Cover 38 62 All 6 cyl exc Diesel 838206 1 15 12 attach holes 55 70 All 265 283 307 327 350 3799620 1 15 10 attach holes 2 dowel holes 58 65 All 348 409 3799600 1 15 fiber and rubber 12 holes 62 69 All 3 53 4 53 5121082 1 52 engine frt cover upper 62 69 All 3 53 4 53 51 16386 1 19 engine frt cover lower 62 66 Ser 80 6V 53 5124055 1 58 engine frt cover upper 62 66 Ser 80 6V 53 5119368 1 27 engine frt cover lower 63 70 All 6 cyl exc Diesel 3923472 1 25 65 69 All D351 D DH478 2367707 1 04 frt cover cap I 65 67 All D351 D DH478 68 Tilt DH478 2454795 1 45 timing gear cover 65 69 All D351 D DH478 2455660 1 58 frt cover 66 68 All 366 427 3860096 1 20 10 holes 67 69 All D DH478 exc Tilt 8868120 1 42 timing gear access cover assy A 69 70 All 366 427 3935449 1 25 0 211 SHEDDER Crankcase Front End Cover 56 59 All 322 1343029 1 40 front oil seal 27 I D x 2 V 0 D 0 213 SEAL SLEEVE Crankcase Front End Cover 38 67 All exc 322 366 Diesel 70 All exc 366 427 3980267 1 1 75 27m O D stamped3980267 56 59 All 322 1305044 1 30 Wu dia x 7V long 62 69 Al 3 53 4 53 5198503 1 1 72 oil oversize 62 69 All 3 53 4 53 6V 53 5116224 1 4 09 oil 62 69 All 3 53 4 53 6V 53 5116476 2 1 55 cam and balancer oil 66 70 All 366 427 3860095 1 1 90 3 O D stamped 3860095 68 69 All exc 366 427 Diesel 3921012 1 1 75 crankshaft frt oil 62 69 All 3 53 4 53 6V 53 5198502 1 1 04 SLEEVE oil 0 253 INSERT PLUG WASHER Exhaust Valve 62 69 All 3 53 4 53 6V 53 5116361 A R 1 53 std 1 0 D 62 69 All 3 53 4 53 6V 53 5196752 A R 1 46 010 oversize 1 Vi 0 D stamped GM 10 65 69 All D DH478 2454134 9 4 35 56 58 All 322 663032 A R 15 PLUG cyl head core hole 62 63 All 3 53 4 53 6V 53 5121059 2 30 WASHER idler timing gear thrust bearing 0 269 HEAD Cylinder 50 52 All 235 3835908 1 73 45 w valve guides ldent No 3835909 53 62 All 235 3836954 1 73 45 ldent No 3836848 Note 1 2 3 NOTE 1 838539 Seat must be used on jobs w o hydraulic valve Iifters NOTE 2 On 1953 thru 1955 models with Bourdon tube type heat indicator gauge it is also necessary to use Adapter Bushing 3837160 NOTE 3 Part No 838539 is NOT required if replaced head has spring seats which can be transferred 54 62 All 261 3836963 1 73 45 ldent No 3836850 55 56 All 265 377301 1 2 51 30 w valve rocker studs Ident No 3703523 Note 4 NOTE 4 When using 3773011 it will be necessary to use 3850049 valve rocker cover unit 57 59 All 283 60 66 Ser 60 283 327 67 Ser 50 60 327 exc TDM 67 Ser 50 TDM 327 68 All 327 1971 CHEVROLET MOTOR DIVISION GENERAL MOTORS CORPORATlON P A 31S REV 6 71 0 1a 0 206 0 269