6 CYLINDER ENGINIEZ 0 629 PISTON Engine C0n t 80 81 X 2 8 IST DES 14020570 6 41 25 RISTON V l PIN 1 0 MM O S 2 0 MM UPR COMP RING GROOVE 4 81 C E 4 1 4 25505374 6 56 50 RISTON l l PIN STD HI LIM 3 9642 3 9660 D A 81 C E 4 1 4 25505375 6 56 50 RISTON l PIN 0I0 O S 3 9742 3 9760 D A 81 C E 4 1 4 25505376 6 56 50 F ISTON V l PIN 030 0 S 3 9942 3 9960 DIA 81 X 2 8 2ND DES 14033250 6 50 75 F ISTON V1 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 V1 PIN STD HI LIM 1 5 MM UPR COMP RING GROOVE 89 027 89 053 MM DIA 81 X 2 8 2ND DES 14033252 6 50 75 PISTON VV 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 Vil PIN 1 0 MM O S 1 5 MM UPR COMP RING GROOVE 90 001 90 053 MM DIA 0 643 RING KIT Erigine Piston NOTE 1 Ist design used w engines with O17 thick cyl head gasket and w 0 XGW stamped near engine plant date code on block Only for automatic transmission NOTE 2 2nd design useizl 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 N L RING KIT STD 76 78 ALL 231 1240960 6 16 75 IRING KIT 010 0 S 76 78 ALL 231 25519464 6 18 45 IRING KIT 030 0 S 76 ALL 250 326400 6 N L IRING KIT STD 76 ALL 250 328503 6 15 10 RING KIT 030 O S 79 A 231 2 IST DES 25519462 AR I I L RING KIT STD NOTE 1 79 A 231 2 IST DES 1240960 AR 16 75 RING KIT 0I0 O S NOTE 1 79 A 231 2 1ST DES 25519464 AR 18 45 RING KIT 030 0 S NOTE 1 79 A 231 2 2ND DES 25526600 AR 18 25 RING KIT STD NOTIE 2 79 A 231 2 2ND DES 25526601 AR 18 25 RING KIT 0I0 OS NOTE 2 79 A 231 2 2ND DES 25526602 AR 18 25 RING I T 030 O S NOTE 2 79 80 A B H 23IA IST DES 25519462 AR N L RING KIT STD NOTE 1 79 80 A B H 23IA IST DES 1240960 AR 16 75 RING KIT 0I0 O S NOTE 1 79 80 A B H 23 IA IST DES 225519464 AR 18 45 RING KIT 030 0 S NOTE 1 79 80 A B H 231A 2ND DEIEE 225526600 AR 18 25 RING KIT STD NOTE 2 79 80 A B H 23IA 2ND DEIEEI 1255261601 AR 18 25 RING KIT 0I0 O S NOTE 2 79 80 A B 1 1 23IA 2ND DEIEEII 125526602 AR 18 25 RING KIT 030 0 S NOTE 2 79 X 23IA 25519 462 AR N L RING KIT STD 79 X 231A 1240960 AIR 16 75 IRING KIT 010 O S 79 X 23IA 25519464 AIR 18 45 RING KIT 030 OS 80 81 X 2 8 IST DES 14067592 6 15 60 IRING KIT STD 2 0 MM UPR COMP RING GROOVE 80 81 X 2 8 IST DES 14067593 6 15 60 RING KIT 0 5 0 S 2 0 MM UPR COMP RING GROOVE 80 81 X 2 8 IST DES 14067594 6 15 60 RING KIT 1 0 MM O S 2 0 MM UPR COMIP RING GROOVE 81 A B 231A IST DES 25519462 AR N L RING KIT STD NOTE I 81 A B 231A IST DES 1240960 AR 115 75 RING KIT 0I0 0 S NOTE 1 8II A B 231A IST DES 25519464 AR 18 45 RING KIT 030 O S NOTE I 81I A B 23IA 2ND DES 2552660 AR 18 25 RING KIT STD NOTE 2 81 A B 231A 2ND DES 25526601 AR 18 25 RING KIT 010 OS NOTE 2 81 A B 231A 2ND DES 25526602 AR 18 25 RING KIT 030 O S NOTE 2 81 ALL 4 1 25505382 6 17 80 RING KIT STD 81 ALL 4 1 25505383 6 18 45 RING KI1 O10 0 5 8 I ALL 4 1 25505384 6 18 45 RING KIT 030 OS 8 I X 2 8 2ND DES 14034969 6 N L RING KIT STD 1 5 MM UPR COMP RING GROOVE 81 X 2 8 2ND DES 14034970 6 16 80 RING KIT 0 5 MM O S 1 5 MM UPR COMP RING GROOVE 81 X 2 8 2ND DES 14034971 6 16 80 RING KIT 1 0 MM 0 S 1 5 MM UPR COMP RING GROOVE 0 646 CRANI SH F I Engine NOTE 1 When cranksliafts with 3 4 16 tapped holes for harnwonic balancer are substituted for crankshafts with 5 a 18 tapped holes use 271629 bolt and 1 199944 washers 76 77 ALI 231C W A T 1255646 I 402 00 CRANKSHAFT NOTE I 76 ALI 250 9340 694 I 402 00 CRANKSHAFT 77 81 ALL 231A 126 877 I 402 00 CRANKSHAFT NOTE 1 78 79 ALI 231 2 126 877 I 402 00 CRANKSHAFT NOTE 1 80 81 X 2 8 14089826 1 351 00 CRANKSHAFT 6 1987 GENERAL I IOTORS SERVICE PARTIES 0PEERATIONS 0LDSI IOBILE 31 FIIEV 7 87 0 21 0 629 0 646