6 CYLINDER ENGINE 0 413 BOLT GROMMET REINFORCEMENT STUD Engine Valve Rocker Arm Cover C0n t 86 J 2 8W 14091881 AR 2 48 STUD VLV RKR CVR M6X1X9 M6X1X10 5 35 NECK TO TORX DR 86 J 2 8W 14092906 AR 87 STUD VLV RKR CVR M6X1X13 M6X1X21 5 TL 40 5 TORX DR DOG PT PGO 37 44 0 423 GASKET Engine Valve Rocker Arm Cover 85 86 J 2 8W 10048606 2 N L GASKET VLV RKR ARM CVR PGO 37 28 87 89 J 2 8W 14092297 2 N L GASKET VLV RKR ARM CVR PGO 45 9 90 91 J 3 1T LHO 14092297 2 N L GASKET VLV RKR ARM CVR PGO 45 9 0 426 ROD Engine Valve Push 87 89 J 2 8W 14102521 6 5 67 ROD EXH VLV PUSH PGO 45 23 87 89 J 2 8W 14102522 6 5 67 ROD INT VLV PUSH PGO 52 29 85 86 J 2 8W 476525 12 9 41 ROD PUSH PGO 38 122 90 91 J 3 1T LHO 14102521 6 5 67 ROD VLV PUSH EXH PGO 45 23 90 91 J 3 1T LHO 14102522 6 5 67 ROD VLV PUSH lNT PGO 52 29 0 429 NUT STUD Engine Valve Adjusting NOTE 1 WHEN RE CONDITIONING A VLV SEAT ON ALUMINUM CYL HEADS IT WILL BE NECESSARY TO REMOVE NON ADJUSTABLE RKR ARM BALL STUD NUT AND REPL WITH ADJUSTABLE STUD 8 NUT TURNDOWN VLV RKR ARM NUT UNTIL THERE IS NO FREE AXIAL MOVEMENT OF PUSHROD THEN TURN ADJ NUT 1 2 TURN MORE NOTE CONTINUES AT 1A NOTE 1A AT NO TIME SHOULD THERE BE LESS THAN 4MM OF VLV SEAT MATERIAL REMAINING AFTER RE CONDITIONING 85 89 J 2 8W 477212 12 1 49 NUT VLV RKR ARM ADJUSTABLE REFER TO NOTE 1 IN CATALOG TEXT PGO 7 39 87 89 J 2 8W 14102542 12 1 00 NUT VLV RKR ARM NON ADJUSTABLE REFER TO NOTE 1 IN CATALOG TEXT PGO 45 18 90 J 3 1T 477212 12 1 49 NUT VLV RKR ARM ADJUSTABLE REFER TO NOTE 1 IN CATALOG TEXT 10X1 0X11 2 PGO 7 39 90 91 J 3 1T LHO 14102542 12 1 00 NUT VLV RKR ARM NON ADJUSTABLE REFER TO NOTE 1 IN CATALOG TEXT FLANGED HEAD 13MM HEX M8X1 0 6H THREAD PGO 45 18 91 J 3 1T LHO 477212 12 1 49 NUT VLV RKR ARM ADJUSTABLE REFER TO NOTE 1 IN CATALOG TEXT HEX PREV TORO ALL METAL 10X1 0X11 2 301 M CD PGO 7 39 85 89 J 2 8W 476530 12 2 10 STUD VLV RKR ARM BALL ADJUSTABLE M10X1 5X9 9 M10X1X18 REFER TO NOTE 1 IN CATALOG TEXT PGO 7 34 87 89 J 2 8W 10044997 12 2 48 STUD VLV RKR ARM BALL M10X1 5X22 M8X1 0X32 B 21 SHLD AND 9 3 THD REFER TO NOTE 1 IN CATALOG TEXT PGO 46 106 90 J 3 1T 476530 12 2 10 STUD VLV RKR ARM BALL ADJUSTABLE M 10X1 5X9 9 M10X1X18 REFER TO NOTE 1 IN CATALOG TEXT PGO 7 34 90 91 J 3 1T LHO 10044997 12 2 48 STUD VLV RKR ARM BALL NON ADJUSTABLE M10X1 5X22 M8X1 0X32 B 21 SHLD AND 9 3 THD REFER TO NOTE 1 IN CATALOG TEXT PGO 46 106 91 J 3 1T LHO 476530 12 2 10 STUD VLV RKR ARM BALL ADJUSTABLE M10X1 5X9 9 M10X1X18 REFER TO NOTE 1 IN CATALOG TEXT PGO 7 34 0 439 GUIDE Engine Valve Push Rod 85 86 J 2 8W 476531 6 2 67 GUIDE PUSH ROD PGO 7 35 87 89 J 2 8W 10078974 2 2 90 GUIDE PUSH ROD CYL 2 5 PGO 46 120 87 89 J 2 8W 10078973 4 2 90 GUIDE VLV LFTR PUSH ROD CYL 1 3 4 6 PGO 46 119 90 91 J 3 1T LHO 10078973 4 2 90 GUIDE VLV LFTR PUSH ROD CYL 1 3 4 6 PGO 46 119 90 91 J 3 1T LHO 10078974 2 2 90 GUIDE VLV LFTR PUSH ROD CYL 2 5 PGO 46 120 1993 GENERAL MOTORS SERVICE PARTS 0PERATlONS CHEVROLET 17J 0 413 0 439 0 26 4 93