427 ENGINE ASSEMBLY 0 643 RING UNIT Piston Service Sets 66 69 All 427 328536 B 7 95 for one piston std 66 69 All 427 328541 1 7 95 complete set of eight 030 0 S 0 646 CRANKSHAFT Engine 66 69 All w Sp H Per 427 3882842 1 222 00 68 68 All 427 exc Sp H Per 69 Pass Police w H Per 427 3882849 1 184 00 Note 1 69 All 427 exc H Per Sp H Fer Police 3987739 1 184 00 NOTE I When used on A 77 it will be neeessary to remove the pilot bearing 0 649 BEARING Crankshaft Clutch Pilot 66 69 All 427 3752487 1 1 30 bush type u l D x 1 q 0 D 3 A 0 659 BALANCER PULLEY KEY Crankshaft NOTE ln some cases double graave pulleys may be used in place of single groove pulleys I NOTE Crankshaft harmonic halancer is also referred to as torsional demperi 66 89 All 427 exo Sp H Per 3960008 1 49 50 w o pulley 7 O D 66 69 All w Sp H Per 427 3860010 1 49 50 w o pulley B 0 D 66 All w Sp H Per 427 67 68 All w P S Sp I I Per 427 3869978 I 28 00 PULLEY 3 grooves 66 All 427 exc Sp H Per CA C 62 amp A l R 67 68 All w A T 427 exc 62 amp C A C 3874412 1 9 50 PULLEY 1 groove 7 66 67 All w P S 427 exc Sp H Per 8874416 1 10 85 PULLEY 1 groove 66 67 All 427 exc Sp H Per T H 66 67 All w C A C 427 exc Sp H Per T H 66 67 All vv 62 amp C A C w T H 427 68 All w C A C 427 ist design exc T H 3874414 1 9 95 PULLEY 2 grooves 7 4 0 D 66 All w 62 amp 427 exo Sp H Per Air Cond 66 67 All w A I R 427 exc Sn H Per Air Cond i 68 All 427 exc C A C A T Sp H Per 3874418 1 9 05 PULLEY front 2 grooves 66 All Air Cond wfl H 427 exc 62 amp 67 All T H vv C A 427 exc Sp H Per 68 All w C A C 427 2nd design exc T H 3876844 1 6 30 PULLEY 2 grooves 7 4 0 D 67 All w Sp H Per 427 exo P S A l R 62 amp gen 3862772 1 24 50 PULLEY 1 groove 67 All A R vv Sp H Fer 427 exo P S 67 All w 62 amp A C Gen 427 Sp H Per exc P S 3863108 1 32 50 PULLEY 2 grooves cast 68 All vv Sp H Per 427 exo P S 3921923 I 9 05 PULLEV 2 groove stamped 68 All w P S 427 exc Sp H Per 3925525 1 8 60 PULLEY front 1 groove 69 All 427 exc C A C P S Sp H Per 3955290 1 10 15 PULLEY 1 groove 69 All w Sp H Per 427 3955291 I 10 15 PULLEY 2 groove 69 All w Air Cond 427 exc A T 3937787 1 14 30 PULLEY 3 groove Note 1 NOTE I Not used on models heving Acc Air Cond end 256 or 273 axle ratia 69 All Alr Cond w T H 427 3946014 1 14 30 PULLEY 3 groove Note 2 NOTE 2 Used on made s with Am Air Cond and 256 or 273 axle rat 0 66 All w key long x u wide X 4 high 3883206A R 18 KEY crankshaft pulley hub Note 3 66 All vv key 1 long x J wide x u high 3885092 1 18 KEY crankshaft Dulley hub Note 3 NOTE 3 Used vwth pulleys and hubs having a slrell0w Vu deep keyway only A l full depth slots te re standard woodruff key 70675 7 two short or I 445 42 one lang ln group 42950 0 662 WASHER Harmonic Balancer and Crankshaft Pulley 66 69 All 427 38648I4 1 70 balancer 0 666 FLYWHEEL with Ring Gear 86 69 All 427 exc A T 3998281 1 75 50 67 All w T H 1 68 All w T H 427 Ist design 69 All w T H 400 Sp H Per 427 336763 1 35 25 Note 1 GM PARTS DIVISION GENERAL MOTORS CORPORATION CHEVROLET I1 iii 0 643 0 666 Mas REV 4 77