4 CYLINDER IEENGIINE i I 0 629 PISTON Engine Con t 88 89 N 2 3D 22539862 4 6 1 2 ES PISTON W PIN 25 0 5 90 91 N 2 5U L68 10112444 4 6ZlI Cl l PISTON W P N STD 600GM WEIGHT 101 595 101 585MM DIA PGO 31 15 90 91 N 2 5U L68 10112445 4 6TiI ZlOI PISTON W PIN I27MM O S 600GM WEIGHT 10I 7I0 101 700MM 90 91 N 2 3D LD2 22548435 4 64 125 PISTON W P N 5TD PGO 8 93 90 91 N 2 3D LD2 22548436 4 154 12 15 PISTON W PIN 0 25 OVSI 0 636 PIN Engine Piston Wrist 85 86 N 2 5U 500011 4 I5 iiIIZI PIN OO1 0 5 PGO 15 14 85 86 N 2 5U 500012 4 I5 liI0 PIN O03 0 5 0 643 RING KIT Engine Piston 85 86 N 2 5U 10030202 4 N I RING KIT STD F G0 15 13 85 86 N 2 5U 10030203 4 I223 iIlCI RING KIT 0 127MM 0 5 85 86 N 2 5U 10030204 4 124 50 RING KIT 0 254MM 0 5 85 86 N 2 5U 10030205 4 224 550 RING KIT 0 762MM 0 5 87 91 N 2 5U L68 10037199 4 I I RING KIT STD PGO 23 14 87 91 N 2 5U L68 10037200 4 1212 65 RING KIT 0 127MM 0 5 87 91 N 2 5U L68 10037201 4 1212 155 RING KIT 0 254MM 0 5 88 91 N 2 3D LD2 22548439 4 124 65 RING KIT PISTON 5TD PGO 8 94 88 91 N 2 3D LD2 22548440 4 24 155 RING KIT 0 25MM O S 0 646 CRANKSHAFT Engine NOTE 1 WHEN USING ON 1987 MODELS WITH MAIIIUAL TRANSMISSION 10101422 BALANCER HOUSING MUST ALSO BE USED 1987 VEHICLEI5 WIT I I AUTO TRANS DO NOT USE BALANCEH CAN BE IDENT BY CAST N O 625 OR 390 85 91 N 2 5U L68 10044539 1 1389 00 CRANKSHAFT NOTE 1 PGO 15 43 88 N 2 3D 22532315 1 357 00 CRANKSHAFT PGO 8 8 1 89 91 N 2 3D LD2 22548384 1 1357 0 CRANKSHAFT PGO 8 81 0 648 BOLT SLINGER Engine Crankshaft 88 90 N 2 3D A TRNS MD9 FED NA5 22531274 6 151 BOLT FLYWHL TO CR SHF M1OX1 0X19 0 PGO 7 52 91 N 2 3D LD2 A TRNS MID9Q CALIFORNIA EMI5 NB2 FEDERAL EMIS NA5 22531274 6 151 BOLT FLYWHL TO CR SHF TH N HD HEX M1OX1 0X19 0 1505 THD 10 9 PC PGO 7 52 88 91 N 2 3D LD2 22531272 1 2 7 5 SLINGER CR SHF OIL PGO 7 25 0 649 INSERT Engine Crankshaft I2IuI1 ch IPiIot 85 90 N 2 5U M TRN5 10009785 1 EI 3CI INSERT CR 5HF PGO 15 38 85 91 N 2 5U L68 A TRN5 MID9 10018699 1 ELEC INSERT CR SHF PGO 23 39 0 659 BAFFLE B ALANCER BOLT I IOUSIIING HUB PULLEY WASHER Engine Crankshaft 87 N 2 5U M TRNS MT 2 10038413 1 EIJ50 BAFFLE BAL WE GHT A5SEMBLED TO HSG W SELF TAPPING BOLTS 88 91 N 2 5U L68 10044489 1 5 4151 BAFFLE BAL WEIGHT PGO 24 76 87 N 2 5U M TFIN5 MT2 10042109 1 25 I 0 CI BALANCER W F UMP ENG OIL USE WITH ORIGINAL FACTORY BUILT CR SHF 10037626 0NLY IDENT BY CAST 625 OR 390 01 652 88 91 N 2 3D LD2 22536209 1 57 215 BALANCER CR SHF PGO 8 97 90 91 N 2 5U L68 11509460 AR 3 25 BOLT HEX M16X2X45 40 THD LEN 10 9 P5 M16X2X45 O8 900 88 90 N 2 5U 10101422 1 14 9 lD O HOUSING BAL CVR BAFFLE ARE ASSEMBLED W SELF TAPPING BOLTS PGO 32 75 91 N 2 5U L68 12508076 1 15 I lIJ 0 HOUSING BALANCER PGO 32 75 85 88 N 2 5U 10028930 1 3 5 50 HUB CR SHF PUL PGO 16 70 85 86 N 2 5U 10112485 1 3I6 00 PULLEY CR SHF DAMPER TORSIONAL PGO 16 72 87 91 N 2 5U L68 10124651 1 3I6 0ICI PULLEY CR SHF DAMPER TORSIONAL 00 629 PGO 24 100 88 91 N 2 3D LD2 22538202 1 5IIEI WASHER CR SHF BAL HUB TO CR 5HF FLAT 18 75 I D 47 8 0 D 5 7TH K 1060 P C PGO 8 96 0 662 BOLT l IEY PIN WASHER Engine Crankshaft Pulley 85 87 N 2 5U 10030024 3 7 4I BOLT CR SHF PIJL HFH SPL M8X1 25X1910 9 PC 19 OD15THD 1991 GENERAL MOTORS SERVICE I ARi I5 OPERATIONS BUICK 44N t I2 91 0 1 0 629 0 662