6 CYLINDER ENGINE 0 553 COVER PLUG Engine Camshaft Con t 81 A B 23IA 1ST DES 1363755 I 68 PLUG RR BRG CUP 48 87 MM NOTE 2 81 A B 23IA 2ND DES 25521361 1 1 05 PLUG BB BRG LOC EXPANSION CUP NOTE 3 0 603 ROD Engine Piston 76 77 ALI 231C 1249433 6 40 75 ROD CONN 76 ALL 250 14050551 6 41 00 ROD CONN 77 79 ALL 23IA 1255667 6 40 75 ROD CONN 80 A B 231A 1255667 6 40 75 ROD CONN 80 H 231A 1ST DES 1255667 6 40 75 ROD CONN HARM BALANCEB IS TWO PC 80 H 231A 2ND DES 25506520 6 40 75 ROD CONN HARM BALANCEB IS ONE PC 80 81 X 2 8 476521 6 38 25 ROD CONN 81 ALL 231A 4 1 25506520 6 40 75 ROD CONN 0 616 BEARING Engine Connecting Rod 76 ALL 231 5463929 6 15 35 BEARING 0I0 U S 76 77 ALL 231 5463930 6 15 35 BEARING 002 U S 76 ALL 231 5463932 6 N L BEARING STD 76 77 ALL 23IC 5463931 6 11 55 BEARING 001 U S 76 ALL 250 463320 6 8 25 BEARING 002 U S 76 ALL 250 3715044 6 9 70 BEARING 010 U S 76 ALL 250 18009469 6 8 00 BEARING STD 76 ALL 250 18009470 6 10 05 BEARING 001 U S 77 81 ALL 231 4 1 4 18005400 6 11 80 BEARING 0008 U S 77 81 ALL 231 4 1 18005401 6 13 25 BEARING 010 U S 77 81 ALL 231A 4 1 4 18005399 6 N L BEARING STD 77 ALL 231C 5463929 6 15 35 BEARING O10 U S 77 ALL 231C 5463932 6 N L BEARING STD 77 79 ALL 260 18008494 6 N L BEARING STD 77 79 ALL 260 18008495 6 11 60 BEARING 010 U S 80 81 X 2 8 18008492 6 N L BEARING STD 80 81 X 2 8 18008493 6 11 55 BEARING 026 MM U S 0 623 BOLT Engine Connecting Rod Cap 76 80 ALL 231 1246266 12 2 25 BOLT 76 ALL 250 460405 12 2 10 BOLT 80 81 X 2 8 466337 12 1 55 BOLT 81 ALL 231A 4 1 25523432 12 1 55 BOLT 0 626 NUT Engine Connecting Rod Bolt 76 81 ALL 225854 12 41 NUT 3 24 76 ALL 250 527599 12 67 NUT gz 24 80 81 X 2 8 361970 12 68 NUT 0 629 PISTON Engine 76 77 ALL 231C 1255656 6 51 25 PISTON W PIN STD HIGH LIM 3 7992 3 80I0 DIA 76 ALL 250 6270033 6 43 00 PISTON W PIN STD 3 8750 3 8760 DIA 76 ALL 250 6270034 6 43 00 PISTON W PIN STD HI LIM 3 8760 3 8770 DIA 76 ALL 250 6270036 6 43 00 PISTON W PIN O30 0 5 77 78 ALL 231 1257377 6 51 25 PISTON W PIN STD HI LIM 3 7992 3 80I0 DIA 77 78 ALL 231 1259578 6 51 25 PISTON W PIN 010 0 5 3 8092 3 81I0 DIA 7778 ALL 231 1259579 6 51 25 PISTON W PIN 030 0 S 3 8292 3 83I0 DIA 77 78 ALL 231A C 2 1255815 6 56 00 PISTON W PIN 005 0 5 3 8042 3 8060 DIA 79 81 ALL 231A 2 25527179 6 50 50 PISTON W PIN 0I0 0 5 3 8092 3 8I10 DIA 79 81 ALL 231A 2 25518053 6 50 50 PISTON W PIN STD HI LIM 3 7992 3 80I0 DIA 79 81 ALL 23 IA 2 25527180 6 50 50 PISTON W PIN 030 0 5 3 8292 3 8310 DIA 80 81 X 2 8 IST DES 14020567 6 41 25 PISTON W PIN STD 2 0 MM UPR COMP RING GROOVE 80 81 X 2 8 IST DES 14020568 6 41 25 PISTON W PIN STD HI LIM 2 0 MM UPR COMP RING GROOVE 80 8 I X 2 8 IST DES 14020569 6 41 25 PISTON W PIN 0 5 MM 0 5 2 0 MM UPR COMP RING GROOVE IQ 1987 GENERAL MOTORS SERVICE PARTS OPERATIONS 0LDSMOBILE 3I 0 553 0 629 0 20 REV 7 87