67 All 3 53 5135267 3 10 72 left exlh valve rocker 67 70 All 3 53 5126248 3 9 47 right exh valve rocker 67 70 All 3 53 5179954 3 9 22 injection rocker 0 334 BUSH lNG BR DGE CLEV S PlN Valve Rocker Arm 67 70 All 3 53 5150311 3 13 injection rocker arm small 67 70 All 3 53 5150318 3 15 injection rocker arm large 67 70 All 3 53 5123700 15 92 exhaust and injection clevis 67 70 All 3 53 5126154 6 2 05 BRIDGE exhaust 67 70 All 3 53 5150312 9 2 74 CLIEVllS exhaust 67 70 All 3 53 5123711 6 13 PIN bridge end 67 70 All 3 53 5150314 9 13 PIN clevis 0 349 SUPPORT BRACKET BOLT Valve Rocker Arm Shaft 50 53 All 235 3835520 6 90 Ident No 3835520 54 62 All 6 cyl 63 4 WD 6 cyl 1st Ser 3783230 6 1 00 ident No 3783230 or 3836114 67 70 All 3 53 5116128 6 2 26 BRACIKET 67 70 All 3 53 l 5119198 6 1 15 BOLT 0 352 SHAFT UNIT Valve Rocker 50 58 All 235 3729191 1 43 90 w arms Note 1 NOTE 1 Contains 1 frt and 1 rear valve rocker shaft 1 L H and 1 R H inlet valve rocker arm assy 2 insulators 2 springs and 2 washers 59 62 All 6 cyl 63 4 WD 6 cyl 1st Ser 3786744 1 43 90 w arms Note 2 NOTE 2 Contains 1 frt and 1 rear rocker shaft 2 L H and 1 R H inlet valve rocker arm assy 2 springs and 2 washers 0 353 SHAFT Valve Rocker Arm with Plug see group 1 531 for Fittings 40 62 All 6 cyl 63 4 WD 6 cyl 1st Ser 3836138 2 3 30 2 grooves on plug end Note 1 NOTE 1 When used on models prior to 1954 four 9411925 Elolts and two 3835659 Studs are required 67 70 All 3 53 5116072 3 3 45 0 356 PLUG Valve Rocker Shaft 38 62 All 6 cyl 63 4 WD 6 cyl 1st Ser 835560 2 05 Vis CLD cup shaped 67 70 All 3 53 5151272 3 05 0 366 BOLT Valve Rocker Shaft Support also see group 0 413 40 62 All 6 cyl 9411925 A R 20 16 x 3 w o shoulder 8 900 0 376 SPRING Valve Rocker Shaft 38 62 All 6 cyl 3835508 4 10 2 free length 38 62 All 6 cyl 63 4 WD 6 cyl 1st Ser 837253 4 15 Via free length 38 62 All 6 cyl 63 4 WD 6 cyl 1st Ser 355936A R 10 retainer hairpin 1 length 0 837 0 386 COVER GROMMET EMBLEM Valve Rocker Arm 38 53 All 3686784 1 4 55 w oil filler hole and air vent Note 1 NOTE 1 On C O E it will be necessary to seal oil filler hole with sheet metal disc to provide clearance 54 62 All 6 cyl 63 4 WD 6 cyl 1st Ser 3758661 1 4 45 27 OL Note 2 NOTE 2 When using on models with closed vent system it will be necessary to use 1552232 oil filler cap assy and drill hole for hose connector 67 70 All 3 53 5141343 1 35 83 59 66 All 283 327 3850049 2 4 45 COVIER UNIT right or left 8 outer hole spacing Note 3 NOTE 3 Includes Cover Assy Gasket and 2 Cylinder Head Bolts 67 All 283 327 3910298 2 4 50 COVIER ASSY right or left 63 65 Ser 10 D D G 10 153 3923467 1 6 00 COVIER ASSY 63 70 All Blazer 6 cyl 3980229 1 4 90 COVIER ASSY 68 69 All 396 3947879 1 6 00 COVIER ASSY left painted 68 70 All 396 3981024 R H 5 85 COVIER ASSY right 68 69 All Blazer 307 327 350 3927117 1 4 80 COVIER ASSY left 69 All Blazer 307 35 COVIER ASSY R H 70 All Blazer 307 350 3990940 1 5 10 L H 68 All 307 327 70 AII Blazer 307 350 3973392 1 6 05 COVIER ASSY R H 70 All 396 3976091 1 5 95 COVER ASSY L H 64 67 All 70 All Blazer 3894337 1 10 GIROMMET cover to a cl l D x 1 z 0 D 68 69 All Blazer 3933188 A R 15 GIROMMET cover to a cl Wu l D x 1 Vu O D 1971 CHEVROLET MOTOR DIVISION GENERAL NIOTORS CORPORATION P A 31 REV 6 71 0 1s 0 333 0 386