56 57 Ser 5 2nd design exc P S 56 57 Ser 6 8 8 cyl 2nd design exc A O I I B 58 Ser 5 exc P S A O H B S8 S9 Ser 6 8 cyl esc P S A O H B 59 Ser 4 w Cool Pack 8 cyl 59 Ser 5 exc P S S9 Ser 7 348 58 59 Ser 8 9 10 exc 322 Air Equip 60 62 All w Cool Pack 8 cyl exc PULLEY balancer double 6 O D Air Equip Painted black 3747479 1 2 75 58 S9 ALL w Air Equip 348 PULLEY front stamped 3743851 3743851 1 2 35 60 61 ALL w Cool Pack 6 cyl 62 ALL w Cool Pack 6 cyl exc PULLEY balancer single stamped P S 3772886 4 3772886 1 3 10 60 61 Ser 60 Air Equip w Cool PULLEY balancer double stamped Pack 8 cyl 3771861 3771861 1 2 70 60 62 Ser 60 Air Equip w Cool PULLEY balancer front single Pack 6 cyl stamped 3772127 3772127 1 2 65 60 62 ser 60 P s w c 1 Pack 6 cyl PULLEY fr t d b1e t ped 3772885 3775674 1 3 50 60 64 ALL w Air Equip 8 cyl exc PULLEY balancer front single Cool Peck stamped 3765947 3765947 1 2 35 62 63 Ser 60 Air Equip w Cool Pack 8 cyl PULLEY balancer double 3828936 1 2 70 62 64 Ser 60 DIESEL PULLEY double 5 0 D 5116484 1 11 37 62 64 Ser 60 DIESEL PULLEY balancer shaft cast 5121095 5121095 1 5 75 62 64 Ser 80 DIESEL PULLEY cast 5109638 5 O D 5109638 1 12 68 62 64 Ser 80 DIESEL PULLEY camshaft balancer 5121109 2 6 58 63 64 Ser 50 230 PULLEY balancer front stamped 3790337 3790337 1 2 10 63 64 Ser 60 w Air Equip 292 PULLEY balancer front stamped 3824448 3824448 1 1 90 63 Ser 50 w Cool Pack 230 PULLEY balancer 3827815 1 7 95 I 63 64 Ser 50 60 w Cool Pack 292 exc Air Equip PULLEY balancer front 3827819 1 3 45 63 64 Ser 50 60 w Cool Pack C Deluxe 8 cyl exc Air Equip PULLEY balancer 3827843 1 3 65 63 64 Ser 60 Custom Air Cond w Air PULLEY front 6 A O D stamped Equip 292 exc TILT 3774901 3774901 1 2 40 64 Ser 50 w C Deluxe Air Cond 230 PULLEY balancer 3834562 1 7 90 63 64 Ser 50 283 HUB pulley 3795272 1 6 20 NO l E When used on 1955 jobs 3723794 spacer must be used to accommodate oil slinger NOTE Bolts in this assy are to be used for driving the balancer on to the crankshaft when the special driving tool is not available Remove bolts after installation 0 662 WASHER SHAFT SPACE R NUT RETAlNER WElGHT WEIGHT UNIT BOLT Hurmonlc B l n er ond Crunkshofr Pulley 56 59 ALL 322 balancer to crankshaft ZI I D x 12 0 D x thk 1169140 1 50 58 ALL 348 59 Ser 7 8 348 60 64 Ser 60 thru 80 balancer I D x 1 0 D x 63 64 Ser 50 292 thick 3739422 1 35 62 64 Ser 60 DIESEL SHAFT balancer 5121074 1 31 26 55 Ser 4 6 SPACER balancer 1 4 O D x 1 I D 3723794 1 15 62 64 Ser 60 DIESEL SPACER balance shaft pulley 5121071 l 1 84 62 64 DIESEL NUT gear and pulley to shaft 1 18 5150087 A R 42 62 64 DIESEL RETAINER crankshaft pulley 5180291 1 42 62 63 Ser 60 DIESEL 1st design WEIGHT outer balancer shaft gear and outer camshaft gear 5126197 A R 1 31 62 64 Ser 60 DIESEL 2nd design WEIGHT inner balancer shaft gear 5119278 A R 2 05 56 S9 ALL 322 WEIGHT UNIT balance 3751840T 1 2 25 63 64 Ser 60 327 BOLT r 2O X 2 3815933 1 55 TNOTE Required for engine balance when installing late design pistons See Group 0 629 gliygat Motor Dlvlslon 0 659 0 662 General Motor Corporation 137 NDT REVISED JANUARY 1 1964