I t 396 ENGINE ASSEMBLY It 0 643 RING UNIT Piston Service Sets I TA I 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 F D warehouse refer to ACNC6775 Identify by eng model f and year Each of these std size piston ring units include the necessary components ring spacers A segments expanders required for replacement in a SINGLE engine cyl NOTE The following service replacement parts are actually 1969 70 model year 402 CID NOTE See Dealer Price Schedule P A 26 for applicable prices e Original Equipment Type complete set for one engine per container STD 020 0 S 030 0 S 66 69 All 396 328521 I 328526 I 70 All 396 328531 NOTE 1 These are Molybdenum premium rings I A 0 646 CRANKSHAFT NOTE 1 When used on A T it will be necessary to remove the pilot bearing 66 70 All 396 3882841 1 A Note 1 I A 60 649 BEARING Crankshaft Clutch Pilot A A I I 68 70 All 396 3752487 1 bush type u I D x 1 u O D x I 0 659 BAALANCER PULLEY Crankshaft I I NOTE Crankshaft harmonic ba ancer is also referred to as torsional damper A NOTE In some cases double groove pulleys may be used in place of single groove pulleys I 68 70 All 396 3860008 1 w o pulley 7 it 0 0 68 70 All 396 exc Air Cond 3874418 1 V PULLEY front stamped 3874418 2 AA I I groove 6 u 0 0 x 1 thk 5 holes 68 70 All w Air Cond 396 3874414 1 PULLEY stamped 3874414 2 groove 7 HI 0 D x 1 thk 5 holes 66 70 All w P S 396 3925525 1 PULLEY front stamped 3925525 1 A f A groove 6 O D x 2 thk 5 holes 0 662 WASHER Harmonic Balencer and Crankshaft Pulley AL 68 70 All 396 3 864614 A 1 balancer I I I 0 666 FLYWHEEL with Ring Gear I 68 70 All 396 exc A T I 3998281 1 solid type 68 70 All w T H 400 396 340296 1 spoke type 1 0 669 A BOLT Flywheel to Crankshaft A II l 68 70 All 396 exc A T 839756 6 20 x 1 66 70 All w A T 396 3727207 6 20 x 29OM steel I 0 673 GEAR Flywheel Ring I I A I I I NOTE Ring gears with 153 teeth are only available as part of Group 0 666 Flywheel assy 68 70 All 396 A 3991406 1 168 teeth A I 0 679 UNIDERPAN EXTENSION SCREW ASSY Flywheel 68 70 Ser 10 thru 30 396 exc A T 3714477 1 clutch housing 15 68 70 All w T H 400 396 A 3868810 1 trans converter I 68 70 Ser 10 thru 30 396 exc A T 3734908 1 EXTENSION clutch housing flywheel A I w two indented throughs on surface 68 68 All 396 3 924780 A R SCREW ASSY w washer 18 x A A A 0 683 HOUSING ASSY BOLT Flywheel and Clutch I A I NOTE 1 When using this Bolt it will be necessary to use Washer 120394 8 929 68 70 All 396 3925I507 1 clutch 68 70 All 396 3736035 A R BOLT clutch housing attach 16 x I 1 300M steel plain 3 275 Note 1 I I 68 70 All 396 3733130 2 BOLT clutch housing attach 16 x A e I A 2 washer hd 300M steel 3 275 I T 0 685 D OWEL Flywheel and Clutch HoJsing to Cylinder Block A 68 70 All 396 3712745 2 clutch and flywheel u x 1 long I 0 724 CHAIN Camshaft Timing i A 68 70 All 396 3902426 1 A link type A I 0 728 SPROCKET Crankshaft Timing Steel I A I I 68 70 All 396 3 902422 I 19 teeth 3 Z 0 D GM PARTS DIVISION GENERAL MOTORS CORPORATION Ci lEVFIOLET 72TL REV 5 79 0 as 0 643 0 728