6 CYLINDER ENGINE 0 386 COVER Engine Valve Rocker Arm Con t 79 80 A B H 231A EXC GOODWRENCH 1ST DES 25518536 RH 24 50 COVER W BRKT VLV RKR NOTE 1 79 80 A B H 231A W GOODWRENCH 2ND DES 25519079 LH 24 50 COVER VLV RKR ARM NOTE 2 79 X 231A 1257149 LH 19 75 COVER VLV RKR ARM 79 X 231A 25518536 RH 24 50 COVER W BRKT VLV RKR ARM 80 81 ALL 4 1 25507861 RH 25 50 COVER W BRKT VLV RKR ARM 80 81 X 2 8 14024274 RH 20 70 COVER VLV RKR ARM 80 81 X 2 8 14042577 LH 20 65 COVER VLV RKR ARM 81 A B 231A EXC GOODWRENCH 1ST DES 1257149 LH 19 75 COVER VLV RKR ARM NOTE 1 81 A B 231A W GOODWRENCH 2ND DES 25518534 RH 24 50 COVER W BRKT VLV RKR ARM NOTE 2 81 A B 231A EXC GOODWRENCH 1ST DES 25518536 RH 24 50 COVER W BRKT VLV RKR ARM NOTE 1 81 A B 231A W GOODWRENCH 2ND DES 25519079 LH 24 50 COVER VLV RKR ARM NOTE 2 0 413 BOLT REINFORCEMENT SCREW STUD Engine Valve Rocker Arm Cover 77 ALL 231 EXC FED 1255271 4 1 25 BOLT VLV RKR CVR TO CYL HD FRT RR OTR 81 ALL 4 1 1255271 LH 1 25 BOLT W PLT VLV RKR CVR TO CYL HD RR OTR 76 ALL 250 352172 11 40 REINFORCEMENT 76 77 ALL 231 FED 1251242 2 1 10 SCREW W PLT HEX HD W 1 UNTHREADED STUD 76 81 ALL 231 4 1 1381008 AR 62 SCREW W PLT VLV RKR CVR HEX HD LESS UNTHREADED STUD 78 81 ALL 231 4 1 1251242 AR 1 10 SCREW W PLT VLV RKR CVR 0 423 GASKET Engine Valve Rocker Arm Cover 76 ALL 231 1249136 2 6 95 GASKET VLV RKR ARM CVR 76 ALL 250 356846 1 7 50 GASKET VLV RKR ARM CVR 77 81 ALL 231 25523348 2 N L GASKET VLV RKR ARM CVR 80 81 X 2 8X 14089252 2 N L GASKET VLV RKR ARM CVR 81 ALL 4 1 25523348 2 N L GASKET VLV RKR ARM CVR 0 426 ROD Engine Valve Push NOTE 7 14 bolt oil pan and edge of camshaft with cast dimples NOTE 2 74 bolt oil pan and edge of camshaft without cast dimples or all 20 bolt oil pan 76 78 ALL 231 1249139 12 4 15 ROD PUSH 76 ALL 250 3788495 12 3 05 ROD PUSH 76 81 ALL 4 1 1249139 12 4 15 ROD PUSH 79 A 231 2 1ST DES 1249139 12 4 15 ROD PUSH NOTE 1 79 A 231 2 2ND DES 25510025 12 4 35 ROD PUSH NOTE 2 79 80 A B H 231A 1ST DES 1249139 12 4 15 ROD PUSH NOTE 1 79 80 A B H 231A 2ND DES 25510025 12 4 35 ROD PUSH NOTE 2 79 X 231A 1249139 12 4 15 ROD PUSH 80 81 X 2 8 476525 12 5 35 ROD PUSH 81 A B 231A 1ST DES 1249139 12 4 15 ROD PUSH NOTE 1 81 A B 231A 2ND DES 25510025 12 4 35 ROD PUSH NOTE 2 0 429 BALL NUT STU D Engine Valve Adjusting 76 ALL 250 3992294 12 75 BALL 76 ALL 250 3744341 12 N L NUT VLV RKR ARM ADJ 80 81 X 2 8 477212 12 78 NUT VLV RKR ARM 76 ALL 250 3814692 12 1 35 STUD 003 0 S 76 ALL 250 3815892 12 1 35 STUD 013 O S 80 81 X 2 8 476530 12 1 30 STUD VLV RKR ARM BALL Q 0 439 COVER GUIDE Engine Valve Push Rod 76 ALL 250 465809 2 4 45 COVER 80 81 X 2 8 476531 12 1 40 GUIDE PUSH ROD 0 443 GASKET Engine Valve Push Rod Cover 76 ALL 250 3920938 2 3 25 GASKET 0 446 BOLT STUD Engine Push Rod Cover 76 ALL 250 3814350 4 67 BOLT W SEAL PUSH ROD CVR 76 ALL 250 352169 2 85 STUD W SEAL 0 459 LIFTER Engine Valve 76 81 ALL 231 5233005 12 7 00 LIFTER 010 O S 76 81 ALL 231 4 1 5232765 12 9 00 LIFTER STD j 1987 GENERAL MOTORS SERVICE PARTS OPERATIONS 0LDSMOBlLE 31 T 0 386 0 459 0 18 REV 7 87