292 ENGINE ASSEMBLY l A 0 616 BEARING UNIT Connecting Rod NOTE See Dealer Price Schedule P A 26 for applicable prices CONNECTING ROD BEARING UNIT CHART STD 001 U S 002 U S 010 U S 020 U S 71 72 AII 3910555 3910556 3910557 3910558 3910559 0 626 NUT Connecting Rod Bearing Cap Bolt 71 72 All 3866766 A R I 24 x thick hex head 0 629 PIS ON ASSEMBLY with Pin Refer to Piston Chart for model application A NOTE Individual piston assemblies are available for warranty purposes and for replacement of pistons damaged when making repairs to engine assemblies When ordering such parts it is necessary that you specify on your order the reason the parts are required and also that the following Note appear on your order Do not ship unit package quantity NOTE See Dealer Price Schedule P A 26 for applicable prices PISTON CHART STD 001 0 S 020 0 S 030 0 S 71 72 AII exc L P Gas 3794494 3794495 3794497 71 72 All w L P Gas 3962018 3962019 4 0 643 RING UNIT Piston Service Sets NOTE Individual cylinder piston ring units std size only for warranty replacement in a single engine cylinder may be ordered thru the local G M P D warehouse refer to ACNC67 75 Identify by engine model and year Each of these std size piston ring units include the necessary components ring spacers segments expanders required for replacement in a Single Engine Original Equipment Type Complete set for one engine per container STD 020 O S 030 0 S 71 72 AII 326394 326397 0 646 CRANKSHAFT 71 72 AII 3910362 1 0 649 BEARING Crankshaft Clutch Pilot 71 72 All 3752487 1 bush type gz O D x L 0 659 BALANCER PULLEY Crankshaft NOTE In some cases double groove pulleys may be used in place of single groove pulleys 71 72 All 3980230 1 w pulley 3 groove 7 O D 71 72 All 3865792 1 PULLEY front 0 662 WASHER Harmonic Balancer and Crankshaft Pulley 71 72 All 3739422 1 balancer u I D x 1 0 D x thk 0 666 FLYWHEEL with Ring Gear 71 72 All 460582 1 71 72 S 5 w A T 361052 1 w reinforcement 0 669 BOLT DOWEL Flywheel to Crankshaft NOTE 1 It will be necessary to align the dowel pin hole in flywheel and crankshaft and ream together to 71 72 All 839756 6 20 x 1 az O L 290M steel 71 72 All exc A T 3910367 6 z 20 x ie 71 72 AII w A T 3910368 6 Z 20 x J 71 72 AII 3886062 1 DOWEL SJ x I Note 1 0 679 UNDER PAN COVER EXTENSION Flywheel 71 72 All exc A T 3714477 1 clutch l5 4 wide 71 72 Ser 50 SBC w T H 475 3868810 1 trans conv 71 72 Ser 50 Conv SBC w A T 3836832 1 COVER flywheel hsg 71 72 Ser 40 exc A T i GM PARTS DIVISION GENERAL MOTORS CORPORATION CHEVROLET 72TM t 0 61 6 0 679 0 sa REV 5 79