6 CYLINDER ENGINE 0 626 NUT Engine Connecting Rod Bolt C0n t 80 ALL 229 225854 12 41 NUT 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 LIMIT 3 7992 3 8010 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 LIMIT 3 8760 3 8777 DIA 76 ALL 250 6270036 6 43 00 PISTON W PIN 030 0 S 77 78 ALL 23IA C 2 1255815 6 56 00 PISTON W PIN 005 0 S 3 8042 3 8060 DIA 77 78 ALL 231A 2 1257377 6 51 25 PISTON W PIN STD HI LIMIT 3 7992 3 8010 DIA 77 78 ALL 231A 2 1259578 6 51 25 PISTON W PIN 010 0 S 3 8092 3 81 IO DIA 77 78 ALL 231A 2 1259579 6 51 25 PISTON W PIN 030 O S 3 8292 3 83I0 DIA 79 81 ALL 231A 2 25527179 6 PISTON W PIN 010 O S 3 8092 3 81I0 DIA 79 81 ALL 231A 2 25518053 6 50 50 PISTON W PIN STD HI LIMIT 3 7992 3 80I0 DIA 79 8 I ALL 231A 2 25527180 6 50 50 PISTON W PIN 030 O S 3 8292 3 83I0 DIA 80 A 229 14019883 6 50 50 PISTON W PIN STD 3 4997 3 5007 DIA 80 A 229 14019884 6 50 50 PISTON W PIN STD HI LIMIT 3 5007 3 50I7 DIA 80 A 229 14019885 6 50 50 PISTON W PIN 030 O S 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 LIMIT 2 0 MM UPR COMP RING GROOVE 80 81 X 2 8 1ST DES 14020569 6 41 25 PISTON W PIN 0 5 MM O S 2 0 MM UPR COMP RING GROOVE 80 81 X 2 8 1ST DES 14020570 6 41 25 PISTON W PIN 1 0 MM O S 2 0 MM UPR COMP RING GROOVE 81 X 2 8 2ND DES 14033250 6 50 75 PISTON W PIN STD 1 5 MM UPR COMP RING GROOVE 89 001 89 027 MM DIA 81 X 2 8 2ND DES 14033251 6 50 75 PISTON W PIN STD HI LIMIT 1 5 MM UPR COMP RING GROOVE 89 027 89 053 MM DIA 81 X 2 8 2ND DES 14033252 6 50 75 PISTON W PIN 0 5 MM O S 1 5 MM UPR COMP RING GROOVE 89 501 89 553 MM DIA 81 X 2 8 2ND DES 14033253 6 50 75 PISTON W PIN 1 0 MM O S 1 5 MM UPR COMP RING GROOVE 90 001 90 053 MM DIA 0 636 PIN Engine Piston Wrist 76 77 ALL 231C 1365034 6 PIN PSTN 0 643 RING KIT Engine Piston NOTE I Ist design used w engines with O17 thick cyl head gasket and w o XGW stamped near engine plant date code on block Only for automatic transmission NOTE 2 2nd design used w engines with O62 thick cyl head gasket and with goodwrench engine with XGW stamped near engine plant date code on block Only for automatic transmission 76 78 ALL 231 25519462 6 RING KIT STD 76 78 ALL 231 1240960 6 16 75 RING KIT 010 O S 76 78 ALL 231 25519464 6 18 45 RING KIT 030 O S 76 ALL 250 326400 6 N L RING KIT STD 76 ALL 250 328503 6 15 10 RING KIT O30 O S 79 A 231 2 1ST DES 25519462 6 N L RING KIT STD NOTE I 79 A 231 2 1ST DES 1240960 6 16 75 RING KIT 0I0 O S NOTE 1 79 A 231 2 IST DES 25519464 6 18 45 RING KIT 030 0 S NOTE 1 79 A 231 2 2ND DES 25526600 6 18 25 RING KIT STD NOTE 2 79 A 231 2 2ND DES 25526601 6 18 25 RING KIT 0IO O S NOTE 2 79 A 231 2 2ND DES 25526602 6 18 25 RING KIT 030 0 S NOTE 2 79 80 A B H 231A 1ST DES 25519462 6 N L RING KIT STD NOTE I 79 80 A B H 231A 1ST DES 1240960 6 16 75 RING KIT 0I0 0 S NOTE 1 79 80 A B H 231A IST DES 25519464 6 18 45 RING KIT 030 O S NOTE 1 79 80 A B H 231A 2ND DES 25526600 6 18 25 RING KIT STD NOTE 2 Q 1987 GENERAL MOTORS SERVICE PARTS OPERATIONS PONTIAC 21 0 626 0 643 0 24 REV 7 87