57 59 Ser 5 6 7 8 283 exc L D 60 66 Ser 60 283 327 late roller type 373541lT 1 9 55 TNOTE 3735411 roller chain may be used in place of link chain design provided sprockets 3735412 13 are also used 58 65 ALL 348 409 roller type 3740686 1 10 50 J 56 ALL 322 CHAIN UNIT to engine No 4561 3741027 1 30 60 NOTE Consists of timing chain camshaft sprocket crankshaft sprocket and oil feed trough 0 728 SPROCKET GEAR Crankshaft Timing Steel 55 57 ALL 8 cyl exc 322 58 59 Ser 4 8 cyl V 58 59 Ser 6 w L D 283 60 66 Ser 40 50 283 18 teeth 3759980 1 3 87 56 59 ALL 322 27 teeth 1175130 1 6 55 57 59 Ser 5 6 7 8 283 exc L D 60 66 Ser 60 283 327 22 teeth 3735413 1 4 10 NOTE May be used with 3735412 sprocket and 3735411 chain on early link type jobs 5365 ALL 348 45 teeth 3740682 1 5 05 62 65 Ser 80 409 24 teeth 3788201 1 5 40 55 66 ALL 6 cyl exc 292 GEAR 27 teeth 3 A O D stamped 71 3836605 1 3 35 62 66 ALL 159 212 318 GEAR idler timing L H Helix 5135275l 1 18 79 62 66 ALL 159 212 318 GEAR 7 O D x 4 I D 5116195 I 1 18 75 63 65 ALL 292 GEAR crankshaft stamped 71 3835371 1 3 40 65 66 ALL 351 478 GEAR 34 teeth 24540020 1 6 15 66 ALL 366 GEAR 31 teeth 3860086 1 3 87 66 ALL 292 GEAR 27 teeth 3882892 1 7 10 0 729 KEY Crankshaft Sprocket 56 59 ALL 322 1 long 1321045 1 25 65 66 ALL 351 478 2 long 238031 b 1 20 0 736 SPROCKET GEAR BEARING BUSHING HUB SHAFT SPACER Camshaft Timing 55 57 ALL 8 cyl exc 322 58 59 Ser 4 8 cyl J 58 59 Ser 6 w L D 283 60 66 Ser 40 50 283 36 teeth 3704214 1 4 90 56 59 ALL 322 54 teeth 1175131 1 12 10 57 59 Ser 5 6 7 8 283 exc L D 60 66 Ser 60 283 327 44 teeth cast 3735412 3735412 1 5 20 NOTE May be used with 3735413 sprocket and 3735411 chain on early link type jobs 58 65 ALL 348 409 48 teeth cast 3740684 3740684 1 5 65 55 62 ALL 6 cyl GEAR aluminum cast 3835473 38354 73 1 7 10 62 66 ALL 159 212 318 GEAR camshaft R H Helix 5135277l 1 22 77 62 66 ALL 159 212 318 GEAR camshaft L H Helix 5135278 I 1 21 60 63 65 ALL 230 292 GEAR Ident N0 3866727 1 7 50 62 65 ALL 212 318 GEAR w brg idler timing L H helix 135275 1 17 83 65 66 ALL 351 478 GEAR camshaft timing 24540180 1 16 25 65 66 ALL 351 478 GEAR camshaft idler 24540140 1 12 50 65 66 ALL 351 478 GEAR balancer shaft 24540070 1 4 95 65 66 ALL 351 478 GEAR bal shaft idler 24540100 1 11 50 66 Ser 50 60 250 292 GEAR cast 3866727 54 teeth 3882893 1 7 50 66 ALL 366 GEAR 62 teeth 3856351 1 4 70 62 66 ALL 159 212 318 BEARING idler 5196793l 1 2 79 65 66 ALL 351 478 BUSHING cam idler gear 2377668o 1 65 65 66 ALL 351 478 BUSHING bal shaft idler gear 24540120 1 50 62 66 ALL 159 212 318 HUB idler 5124458l 1 9 26 65 66 ALL 351 478 SHAFT cam idler gear 24540160 1 11 75 65 66 ALL 351 478 SHAFT bal idler gear 24577830 1 11 95 62 64 Ser 80 318 SPACER idler gear hole 1 thick 5116220l 1 3 98 0 738 BOLT PIN WASHER SPACER SL NGER RETA NER NUT PLATE Camshaft Sprocket 55 63 ALL 8 cyl exc 322 lock type Z 18 x 9408991 3 8 900 56 59 ALL 322 2O X 1 1285606 1 18 62 66 ALL 159 212 318 idler timing gear hub Z 16 x 1 hex hd 5157244l A R 14 55 62 ALL 8 cyl exc 322 PIN dowel 005 0 8 dia x 2 long 3836732 1 35 I9 OJZ4 0 738 108 Chovrolot Motor Divisizz HDT General Motors Corporation REVISED MARCH l 1966