140 ENGINE ASSEMBLY 0 643 RING Piston 71 75 All 140 6263197 4 N L piston std 71 75 All 140 6263198 4 7 75 piston 010 0 3 71 75 All 140 6263199 4 10 95 piston 020 O S 71 75 All 140 464030 4 11 05 RING piston 030 0 S 0 646 CRANKSHAFT Engine NOTE 7 On models with auto trans remove clutch pi ot brg 71 75 All 140 6270024 1 192 00 CRANKSHAFT Note 1 0 649 BEARING Clutch PiI0t 71 75 All 140 exc A T 3752487 1 N L BEARING 0 659 PULLEY Crankshaft NOTE 1 In some cases double groove pulleys may be used in place of sing e groove pulleys NOTE 2 Used w spacer in Group 0 662 to replace 2 groove cast iron damper 71 74 All 140 75 All 140 w C A C exc A R 3977141 1 16 35 2 groove Note 1 2 75 All w 2BC 140 w A l R exc F S 354606 1 16 15 PULLEY crankshaft 0 662 SPACER Crankshaft Pulley NOTE 1 Used w 2 groove pu ley to replace 2 groove cast iron damper 71 75 All 3977143 1 4 80 SPACER center Note 1 0 666 FLYWHEEL Engine Crankshaft 71 75 All 140 exc A T 3967048 1 76 75 71 75 All w A T 140 471529 1 39 25 FLYWHEEL 0 669 BOLT Flywheel to Crankshaft 71 75 All 140 exc A T 839756 6 25 5 20 x 1 71 75 All w A T 140 3727207 6 61 BOLT i6 20 x Z3 gz 0 673 GEAR Flywheel Ring 75 All 140 3991407 1 14 25 GEAR 0 679 COVER SCREW SHIELD PAN Clutch Housing and Transmission Under Pan 71 75 All 140 exc A T 3973182 1 71 COVER clutch housing 71 75 All 140 exc A T 3817006 4 18 SCREW under pan clutch housing side shield 4 20 x 7 IG 71 75 All 140 exc A T 3973181 1 1 90 SHIELD clutch housing side 71 73 All w P G 140 3978775 1 7 80 PAN trans converter 72 74 All w A T 140 75 All 140 376235 1 8 15 PAN trans converter 0 683 HOUSING Flywheel and Clutch 71 72 All 140 3983415 1 85 50 73 75 All 140 6270026 1 69 25 HOUSING 0 685 PIN Flywheel and Clutch Housing to Cylinder Block 71 73 All 140 3712745 2 86 2 S2 x 1 0 L 71 75 All 140 3992198 2 73 PIN auto trans or clutch housing lineup 3 B x 1 O L 0 686 GASKET Transmission to Clutch Housing 71 73 All 140 exc A T 6261801 1 43 GASKET 0 724 BELT COVER NUT Camshaft Timing Belt NOTE 1 When used on models with NB 2 cover 331 139 must also be used 71 75 All 140 3980252 1 N L BELT camshaft timing 71 All 140 3977146 1 1 25 COVER belt upper 72 All 2BC w NB2 140 6270080 1 12 95 COVER belt front Note 1 72 All w 2BC NB2 140 75 All 140 w A R 331139 1 3 90 COVER timing belt upper 71 75 All 140 369106 1 COVER timing belt lower 71 73 All 140 9433043 4 25 NUT timing belt cover 0 728 SPROCKET Crankshaft Timing 71 75 All 140 3980283 1 14 55 SPROCKET 0 736 SPROCKET Camshaft Timing 71 75 All 140 6270006 1 18 80 SPROCKET GM PARTS DIVISION GENERAL MOTORS CORPORATION CHEVROLET 11 0 643 0 736 0 8 REV 4 81