0 429 BALL UNIT STUD SEAL NUT Valve Rocker Arm ALL valve rocker arm nut 3777867 2 2 50 ALL 4 STUD ball G M 300 M steel 6255639 12 50 ALL SEAL ball stud 6255641 12 08 ALL NUT 24 coned nut 3744341 12 15 0 439 COVER GUIDE TUBE Crankcase and Push Rod ALL crankcase top 6255856 1 9 50 ALL GUIDE valve push rod 6257983 6 45 ALL l UBE push rod oil drain 6255650 12 50 0 443 GASKET SEAL Crankcase and Push Rod ALL crankcase cover 6255857 2 15 ALL SEAL O ring 5 I D x LQ 6255519 24 10 0 459 TAPPET Valve ALL hydraulic recessed area around middle and one end 3779410 12 2 60 0 519 CAMSIIAPT ALL exc H Per 6255609 1 17 50 ALL w H Per 3777255 1 18 00 0 533 BEARING Camshaft Thrust ALL 625561 1 1 40 0 603 ROD ASSEMBLY Connecting ALL 6255633 6 5 50 0 616 BEARING UNIT Connecting Rod ALL t std 6257149 6 1 50 ALL 001 U S 6257969 6 1 60 ALL 002 U S 6256971 6 1 75 ALL 010 U S 6257974 6 1 75 ALL 020 U S 6257977 6 1 75 l 0 623 BOLT Connecting Rod ALL A 6255636 12 30 0 626 NUT Connecting Rod Cap ALL 24 6255523 12 05 Not required in this group See group 0 293 839103 06 0 643 RING UNIT Piston ALL 6257126 1 21 50 A 0 646 CRANKSIIAFT ASSEMBLY ALL 6256633 1 94 50 NOTE When using on Models with P G remove clutch pilot bearing 0 648 SLINGER RING Crankshaft Oil ALL rear 62574771 1 25 ALL front 6256601 1 20 ALL RING retaining front oil slinger 3769698 1 45 TNOTE When using 6257477 in place of 6255836 it will also be necessary to use 1 6257476 Seal Assy Also the outboard face of pilot hole of engine rear Housing Assy 6255848 must be chamfered X2 x 45 degree to provide a lead in for 6257476 Seal 0 429 0 648 mu convnun nnrs cA rA oo 70 Gh vi o1 t Moto mon General Motors Corporation