6 CYLINDER ENGINE 0 413 B I 1 1Gtl OMMET N UT WASHER Engine Valve Rocker Arm Cover 85 88 N 3 0L 4 A 25519277 6 52 WASHER VLV RKR ARM CVR NUT PGO 43 11 0 423 GASKET Engine Valve Rocker Arm Cover 85 88 N 3 0L 25518526 2 7 85 GASKET VLV RKR ARM CVR PGO 43 31 89 N 3 3N 25530329 2 5 55 GASKET VLV RKR ARM CVR 90 91 N 3 3N LG7 25532619 2 5 55 GASKET VLV RKR ARM CVR 0 426 GUIDE ROD Engine Valve Push 89 91 N 3 3N LG7 25532387 2 4 20 GUIDE VLV LFTR PUSH ROD AT ROCKER ARM PGO 51 34 85 88 N 3 0L 25518766 12 4 10 ROD VLV PUSH PGO 43 59 89 91 N 3 3N LG7 25532737 12 3 10 ROD VLV PUSH PGO 51 35 0 429 BOLT Engine Valve Adjusting 89 91 N 3 3N LG7 25533440 AR 57 BOLT VLV RKR ARM PIVOT HFH W SHLD 3 8 16X 64 THD 56 ODX1 14 SHLD 300M PL PGO 51 27 0 459 BOLT GUIDE LIFTER Engine Valve 89 N 3 3N 25534576 3 80 BOLT VLV LFTR GDE RET TO CYL BLK HEX W FLAT WASHER 5 16 18X 9 69 OD 7 THD 300M PC 00 659 90 91 N 3 3N LG7 24500055 3 1 25 BOLT VLV LFTR GDE RET TO CYL BLK 00 659 89 91 N 3 3N LG7 25534766 6 2 70 GUIDE LFTR AT INTAKE VALLEY PGO 51 32 85 88 N 3 0L 5234485 12 N L LIFTER VLV STD PGO 43 58 89 91 N 3 3N LG7 5234670 12 N L LIFTER VLV ROLLER PGO 51 31 0 480 RETAINER Engine Valve Lifter 89 91 N 3 3N LG7 25531836 1 4 75 RETAINER LIFTER VLV GDE PGO 52 75 0 519 CAMSHAFT CAMSHAFT KIT Engine 91 N 3 3N LG7 25535546 1 171 00 CAMSHAFT MACHINED PGO 56 68 89 90 N 3 3N 12338326 1 161 00 CAMSHAFT KIT W THRUST WASHER PGO 48 73 85 86 N 3 0L 25526849 1 174 00 CAMSHAFT 87 88 N 3 0L 25527389 1 161 00 CAMSHAFT PGO 40 71 0 529 KEY Engine Camshaft 91 N 3 3N LG7 24500618 1 27 KEY CM SHF SPKT PGO 56 69 0 533 BEARING BOLT WASHER Engine Camshaft Thrust 85 88 N 3 0L 25532588 1 7 30 BEARING W SPRING CM SHFT THRUST WHEN USING ON 1988 EARLIER MAY BE USED IN PLC OF THE THRUST BUTTON SPRING DES THAT IS ON THE ENG PGO 39 58 89 90 N 3 3N 25532434 1 7 00 BEARING W SPR NG CM SHF THRUST PGO 47 69 91 N 3 3N LG7 25535753 3 17 BOLT CM SHF THR PLT C SK OVAL 5 16 18X 75 280M PC TORX T30 PGO 56 71 90 N 3 3N 24500056 1 91 WASHER CM SHF THR FLAT 1 8X2 58X 03 0 539 BEARING Engine Camshaft 85 87 N 3 0L 1231142 2 8 90 BEARING CM SHF 2 3 PGO 40 72 85 87 N 3 0L 25524301 2 8 15 BEARING CM SHF 1 4 PGO 40 72 88 N 3 0L 25533998 2 7 85 BEARING CM SHF 1 4 PGO 48 74 88 N 3 0L 25533999 2 7 85 BEARING CM SHF 2 3 PGO 48 74 89 9 1 N 3 3N LG7 24501060 2 8 50 BEARING CM SHF 1 4 PGO 56 80 89 91 N 3 3N LG7 24501061 2 8 50 BEARING CM SHF 2 3 PGO 56 80 0 553 PLATE PLUG Engine Camshaft Bearing 91 N 3 3N LG7 24500339 1 3 35 PLATE CM SHF THRUST 00 533 PGO 56 70 85 88 N 3 0L 25521361 1 1 10 PLUG CM SHF RR BRG LOC EXPANSION CUP PGO 39 7 89 91 N 3 3N LG7 25521361 1 1 10 PLUG CM SHF RR BRG LOC EXPANS ON CUP PGO 39 7 t 1991 GENERAL MOTORS SERVICE PARTS 0PERATIONS BU CK 44N T 0 413 0 553 0 24 2 91