140 ENGINE ASSEMBLY i 0 629 PISTON ASSY Engine Con t I 71 75 All 140 44 4 4 3992232 4 26 25 w pin 020 0 S 4 71 75 All 140 4 4 460593 4 22 30 w pin 030 0 5 4 444 4 0 643 RING UNIT Piston 71 75 All 140 4 4 44 6263197 4 7 45 piston std 4 71 75 All 140 4 6263196 4 piston 010 0 S 4 44 4 71 75 All 140 4 444444 6263199 4 7445 piston 020 0 S 444 4 4 71 75 All 140 4 464030 4 7 45 piston 030 0 5 4 4 0 646 CRANKSHAFT Engine 71 75 All 140 4 4 444 6270024 1 115 00 Note 1 44 4 NOTE 1 On models with auto trans remove clutch pilot big 0 649 BEARING Clutch Pilot 71 75 All 140 exc A T 3752487 1 1 30 0 659 PULLEY ASSY Crankshaft 71 74 All 140 I 75 All 140 w C A C exc A l R 4 3977141 1 10 15 2 groove Note 1 2 4 NOTE 1 ln some ceses double groove pu evs may be used in p ace of sfhg e groove pulleys NOTE 2 Used w spacer in Group 0652 to replace 2 groove east iron dampen 75 All w 250 140 w A R exc P S 44 354606 1 10 85 crankshaft 0 662 SPACER Crankshaft Pulley V 71 75 All 3977143 1 3 20 center Note I 4 4 4 4 NOTE 1 Used w 2 groove pu ev to replace 2 groove cast iran damper I 0 666 FLYWHEEL ASSY 71 75 All 140 exc A T 3967048 1 47 75 7I 72 All w A T 140 3991402 1 29 50 73 75 All w A T 140 333955 1 32 00 0 669 BOLT Flywheel to Crankshaft 71 75 All 140 exc A T 839756 6 14 20 x 1 71 75 All w A T 140 3727207 6 42 N 20 x 4 4 4 0 673 GEAR Flywheel Ring 75 All 140 3991407 1 8 80 0 679 COVER SCREW SHIELD UNDER PAN Clutch Housing and Transmission Under Pan 71 75 All 140 exc A T 3973182 I 46 clutch housing V71 75 All 140 exc A T 3817006 4 14 SCREW under pan clutch housing side shield I 20 x i 4444 444444 4 71 73 All w A T 140 9425422 4 05 SCREW trans converter under pan 4 20 x u 8 977 4 71 75 All 140 exc A T 3973181 1 1 20 SHIELD clutch housing side 444 44444 4 71 73 All w P G 140 3978775 1 5 20 UNDER PAN trans converter 4 4 4 72 74 All w A T 140 4 4 4 6271535 1 5 80 UNDER PAN trans convener 75 All 140 4 444 4 44 355551 1 5 45 UNDER PAN trans convener 4 4 0 683 HOUSING ASSY Flywheel and Clutch 7I 72 All 140 44 3983415 1 73 75 All 140 44 6270026 1 43 50 0 685 DOWEL PIN Flywheel and Clutch Housing to Cylinder Block 4 71 73 All 140 4 3712745 2 56 M x 1 0 L 71 75 All 140 3992198 2 45 PIN auto trans or clutch housing lineup x 1 0 L 44 4 0 686 GASKET Trensmlselon to Clutch Housing 71 73 All 140 exc A T 4 4 6261801 1 27 0 724 BEI T COVER NUT SCREW ASSY Camshaft Timing Belt 71 75 All 140 3980252 1 12 00 camshaft timing 71 All 140 3977146 1 82 COVER belt Unper 72 All ZBC w NB2 140 6270080 1 8 55 COVER belt front Note 1 NOTE l When used on models vwth N5 2 cover 6270022 must e so be used 72 Al w 280 NB2 140 75 All 140 w A R 331139 1 2 65 COVER ASSY timing belt upper 71 75 All 140 389106 1 5 15 COVER ASSY timing belt lower repl 347105 0 206 72 All w IBC 140 exo NB2 73 74 All 140 1 GM PARTS DIVISION GENERAL MOTORS CORPORATION CHEVROLET 11 0 629 0 724 as REV 4 77