6 C YLINDER E NGINE 0 423 GASKET Engine Valve Rockenr Arm Cover C0n t 82 87 G 231A 25523348 2 N L GASKET VLV RKR ARM CVR PGO 36 24 82 84 X 2 8X Z 14089252 2 N L GASKET RKR C R 85 86 B 4 32 14081257 2 N L GASKET VALVE ROCKER ARM COVER 85 86 B 4 32 14088793 6 21 GASKET VALVE ROCKER COVER BOLT PGO 40 43 85 B 231A EXPORT CANADA 25523348 2 N L GASKET VLV RKR ARM CVR PGO 36 24 86 87 G 4 32 14081257 2 N L GASKET VALVE ROCKER ARM COVER 86 G 4 32 14088793 6 21 GASKET VALVE ROCKER COVER BOLT PGO 40 43 0 426 ROD Engine Valve F ush NOTE 1 1ST DESIGN 14 BOLT OIL PAN EDGE OF CII I SHF CAST DIMPLES IVIAFIKED WITH GREEN PAINT NOTE 2 2ND DESIGN 14 BOLT OIL PAN EDGE OF CM 15 HF WITHOUT CAST DIMPLES OR ALL 20 BOLT OIL PAN MARKED WITH YELLOW PAIIVT 82 G 4 I 4 1249 l39 12 4 90 ROD PUSH PGO 36 52 82 84 G 231A 1ST DESIGIN 1249 l39 12 4 90 ROD PUSH NOTE 1 PGO 36 52 82 84 G 231A 2ND DESIGN 25510025 12 5 20 ROD PUSH NOTE 2 82 84 X 2 8X 2 476525 12 6 35 ROD PUSH PGO 28 25 83 B 229 9 140951256 12 N L ROD PUSH PGO 32 50 84 B 231A 1ST DESIGN 1249 l39 12 4 90 ROD PUSH NOTE 1 PGO 36 52 84 B 231A 2ND DESIGN 25510025 12 5 20 ROD PUSH NOTE 2 85 86 B 4 32 140951256 12 N L ROD PUSH PGO 32 50 85 B 231A EXPORT CANADA 25510025 12 5 20 ROD PUSH 85 87 G 231A 25510025 12 5 20 ROD PUSH 86 G 4 32 140951256 12 N L ROD PUSH PGO 32 50 87 G 4 32 10046 I73 12 4 65 ROD PUSH PGO 40 152 0 429 BALL NUT STUD Enngine Valve Adjusting 83 B 229 9 3744340 12 98 BALL VALVE ROCKER ARM PGO 32 31 85 86 B 4 32 3744340 16 98 BALL VALVE ROCKER ARM PGO 32 31 86 87 G 4 32 3744340 16 98 BALL VALVE ROLCKER ARM PGO 32 31 82 84 X 2 8X 2 4772212 12 83 NUT VLV RKR ARM PGO 26 19 83 B 229 9 3744341 12 N L NUT VALVE ROCKEFI ARM ADJ PGO 32 30 85 86 B 4 32 3744341 16 N L NUT VALVE ROCKEFI ARM ADJ PGO 32 30 86 87 G 4 32 3744341 16 N L NUT VALVE ROCKEFI ARM ADJ PGO 32 30 82 84 X 2 8X 2 476 530 12 1 30 STUD VLV RKR ARM BALL PGO 28 22 83 B 229 9 38141592 12 1 35 STUD VALVE ROCKEER ARM 003 0 5 PGO 32 33 1 83 B 229 9 38151392 12 1 35 STUD VALVE ROCKEER ARM 013 O S 85 86 B 4 32 38141692 16 1 35 STUD VALVE ROCKEER ARM O03 O S PGO 32 33 85 86 B 4 32 38151392 12 1 35 STUD VALVE ROCKEER ARM 013 0 S 86 87 G 4 32 38141692 16 1 35 STUD VALVE ROCKEER ARM 003 O S PGO 32 33 86 87 G 4 32 38151392 12 1 35 STUD VALVE ROCKER ARM 013 O S 0 439 GUIDE Engine Valve Push Rod 82 84 X 2 8X 2 476531 6 1 60 GUIDE PUSH ROD PGO 28 23 0 459 LIFTER RETAINER Engine Vaulve 82 G 4 1 4 52331005 12 7 55 LIFTER VLV 010 CLS 82 83 G 231A 52331005 12 7 55 LIFTER VLV 010 CLS 82 G 4 1 4 5234485 12 N L LIFTER VLV STD PGO 36 53 82 85 G 231A 5234485 12 N L LIFTER VLV STD PGO 36 53 82 84 X 2 8X 2 52341212 12 N L LIFTER VLV STD PGO 28 4 2 82 84 X 2 8X 2 52342390 12 19 10 LIFTER HYD VLV O10 O S 83 B 229 9 5232 720 12 N L LIFTER VALVE PGO 32 49 83 B 231A 5233005 12 7 55 LIFTER VLV 010 CLS 83 84 B 231A 5234485 12 N L LIFTER VLV STD PGO 36 53 84 B 231A 52343345 12 120 30 LIFTER VLV 010 0 S 84 G 231A 5234345 12 120 30 LIFTER VLV 01 0 O S 85 86 B 4 32 5232 720 12 N L LIFTER VALVE PGO 32 49 85 B 231A EXPORT CANADA 5234485 12 N L LIFTER VLV STD PGO 36 53 85 86 G 4 32 5232 720 12 N L LIFTER VALVE PGO 32 49 86 G 4 32 5232 720 12 N L LIFTER VALVE PGO 32 49 87 G 231A 5234485 12 N L LIFTER VLV STD PGO 36 53 87 G 4 132 5234890 12 N L LIFTER HYDRAULIC VALVE ROLLER PGO 40 61 87 G 4 132 10046165 I 3 10 RETAINER VALVE L FTER FIESTRICTOR PGO 40 101 i 1990 GENERAL MOTORS SERVICE PARTS 0F ERATIONS PONT AC 22W t REV 6 90 0 39 0 423 0 459