GMO 3 1976 250 L6 ENGINE PART I 1 GEAR Camshaft 0 736 52 PUMP Water 1 069 2 BEARING Camshaft Thrust 0 533 53 BOLT Hex 5 16 18 x 7 B 8 900 3 KEY 3 16 x 3 4 8 960 54 BOLT Hex 5 16 18 x 1 1 2 8 900 4 BEARING Camshaft 0 539 55 PULLEY Water Pump Fan 1 062 5 CAMSHAFT Engine 0 519 56 SPACER Engine Fan 1 064 6 LIFTER Valve 0 459 57 NIPPLE By Pass Hose 8 866 7 BOLT Hex 1 4 20 x 1 2 8 906 58 BEARING Part of Distributor Shaft N S 8 SCREW Tap 1 4 20 x 1 2 8 977 59 SCREW Tap 1 4 20 x 7 16 8 977 9 FAN Engine 1 064 60 BOLT Not Used 1 N S 10 ELEMENT Oil Filter 1 836 61 WASHER Not Used 1 N S 11 CONNECTOR Oil Filter 1 855 62 WASHER Not used 1 N S 1 2 PUMP Fuel 3 900 63 DAMPER Torsional 0 659 13 GASKET Fuel Pump 3 904 64 KEY 3 16 x 3 4 8 960 14 BOLT W Seal Valve Cover 5 16 18 65 SEAL Engine Front Cover Oil 0 213 x 7 16 0 446 66 COVER Engine Front End 0 206 15 WIRE Spark Plug 2 240 67 GASKET Front End Cover 0 207 16 DISTRIBUTOR Ignition HEI 2 361 68 GEAR Crankshaft 0 728 17 GASKET Distributor 2 363 69 KEY 3 16 x 3 4 8 960 18 BOLT Hex 3 8 16 x 1 8 900 70 BEARING Crankshaft Upr 0 096 19 CLAMP Distributor 2 363 71 BEARING Crankshaft Rear 0 096 20 COVER Coil 2 183 72 SEAL Crankshaft Rear Main Bearing 21 INDICATOR Oil Level 1 516 Oil 0 137 22 TUBE Oil Level Indicator 1 516 73 BOLT Hex 8 900 23 BEARING Connecting Rod 0 616 74 BEARING Clutch Release 0 799 24 PIN Piston 0 636 75 COVER W Plate Clutch 0 859 25 RING KIT Piston 0 643 76 STUD Clutch Release Fork Ball 0 796 26 PISTON Engine Incl 24 0 629 77 SPRING Clutch Fork Retaining 0 796 27 BOLT Connecting Rod 0 623 78 FLYWHEEL Engine A T 0 666 28 ROD Engine Connecting V 0 603 79 BOLT Flywheel to Crank 7 16 20 x 29 COIL Ignition 2 170 I A T 0 669 30 STUD W Seal Valve Cover 0 446 80 WASHER Lock 7 16 Ext 8 932 31 NUT Connecting Rod Bolt 0 626 81 FORK Clutch Release 0 795 32 COVER Valve Push Rod 0 439 82 PLATE Clutch Driven 0 886 33 SWITCH Engine Oil Pressure 1 800 83 FLYWHEEL Engine MT 0 666 34 GASKET Push Rod Cover 0 443 84 CAP Crankshaft Rear Main Bearing 0 105 35 BOLT Hex 5 16 18 x 5 8 8 977 85 BOLT Crankshaft Main Bearing Cap 0 056 36 BRACE Starter Motor 2 042 86 NUT Hex 8 915 37 MOTOR Starter 2 041 87 STUD Main Bearing Cap 0 056 38 BOLT Starter to Block 2 042 88 PIPE Screen Support Oil Pump 39 PLUG Water Jacket Rear 2 OD 0 034 Suction 1 656 40 PLUG Camshaft Bearing Hole 0 553 89 GASKET KIT Oil Pan 1 429 41 BOLT Hex 3 8 16 x 1 1 4 8 900 90 SEAL Oil Pan Rear 1 429 42 HOUSING Flywheel 0 683 91 GASKET KIT Oil Pan 1 429 43 COVER Flywheel Housing 0 679 92 SCREW Oil Pan Drain 1 453 44 SCREW Tap 1 4 20 x 7 16 8 977 93 GASKET Oil Pan Drain Screw 1 456 45 FITTING Vacuum 3 278 94 PAN Oil 1 426 46 PLUG Water Jacket Side 1 5 8 0 034 95 SCREW Oil Pan to Block 1 428 47 BLOCK Engine Cylinder 0 033 96 SEAL Oil Pan Front 1 429 48 NOZZLE Timing Gear Oil 1 7 32 0 748 97 BOLT Hex 5 16 18 x 3 4 8 900 49 VALVE Oil Filter By Pass 1 837 98 PUMP Oil 1 652 50 PLUG Oil Gallery Front Hole 0 034 99 CAP Crankshaft Front Main Bearing 0 095 I 51 GASKET Water Pump 1 079 100 BEARING Crankshaft Lwr 0 096 101 CRANKSHAFT Engine 0 646 NOTE 1 Items 60 61 62 are not used on 250 engine Torsional Damper for this application is press fit with special tools Refer to Service Overhaul Manual i i 1987 GENERAL MOTORS SERVICE PARTS OPERATIONS OLDSMOBILE 3IA 7 87 0 21 0 000 GROUP