400 ENGINE ASSEMBLY 0 297 VALVE Exhaust Con t 73 75 All 400 3995602 A R 9 85 VALVE 003 0 S 73 75 All 400 6263775 A R 22 85 VALVE 015 0 S 73 75 All 400 3995604 A R 9 85 VALVE 030 O S 0 303 SPRING SHIM Valve NOTE 7 When using 3970627 it is necessary to discard the valve spring cap and va ve stem oil seal v which were used with 7st design spring NOTE 2 T0 be used in place of Valve Stem Oil Shield when removed at customers request 70 71 All w 4BC 400 3970627 16 4 05 Note 1 70 71 All w 2BC 400 72 75 All 400 3911068 A R 2 15 w damper inlet 71 72 All w 4BC 400 3856860 16 3 00 w damper 72 75 All 400 6263796 8 2 30 SPR NG w damper exhaust 70 72 All w 2BC 400 73 75 All 400 3731058 A R 29 SHIM Z thk Note 2 70 71 All w 4BC 400 3875916 16 31 SHIM spring 5 S4 I D x 1 S4 0 D x St thick 0 308 SEAL SHIELD Valve Spring Cap NOTE 7 When installing seals it is necessary to discard the valve stem oil defl which is assembled to the valve spring cap 70 Chevelle 400 71 All w 4BC 400 460527 1 N L valve stem oil seal inlet Note 1 71 72 All w 2BC 400 73 75 All 400 3835333 A R N L SEAL valve stem oil Note 1 71 72 All w 2BC 400 73 75 All 400 3836755 A R 35 SHIELD valve stem oil 0 309 CAP ROTATOR ASSY Valve Spring NOTE 7 7st design vehicles required a cap and seal while 2nd design vehicles require 3964264 Cap Assy 70 72 All w 2BC 400 73 75 All 400 3896934 A R 68 valve spring cap A stamped on top of the surface inlet l az 0 D 70 71 All w 4BC 400 3964264 16 94 CAP w deflector Note 1 72 75 All 400 6263794 8 4 85 ROTATOR ASSY exhaust valve 0 310 KEY Valve Stem 70 72 All w 2BC 400 70 71 All w 4BC 400 3947880 32 31 green 73 75 All 400 3947770 A R 31 KEY carbonized ident by purple dye 0 333 ARM Valve Rocker with Adjusting Screw and Nut 70 71 All w 4BC 400 6258611 16 N L ARM ball rod kit inlet and exhaust 70 72 All w 2BC 400 73 75 All 400 3974290 16 N L ARM inlet and exhaust V stamped on inside of pad end 0 386 COVER GROMMET Valve Rocker Arm 70 71 All w 4BC 400 338262 R H 19 60 w oil filler cap 70 71 All w 4BC 400 338261 L H 19 55 w oil filler cap 70 73 All 400 6272227 2 17 25 w oil filler cap R H L H 74 75 All 400 355965 L H left 74 75 AII 400 340268 R H 15 25 COVER right 70 All 400 3894337 A R 23 GROMMET cover to a cl 3 gz I D x 17 az O D 1 745 0 413 BOLT REINFORCEMENT Valve Rocker Cover and Support NOTE 7 Use with Bolt 780076 70 75 All 400 180016 1 20 BOLT 20 x 2 8 900 70 75 All 400 3877670 A R 19 REINFORCEMENT 1 Z 0 L Note 1 0 423 GASKET Valve Rocker Cover 70 72 All w 2BC 400 73 75 All 400 3933964 2 N L 70 71 All w 4BC 400 3860315 2 N L GASKET 213 az 0 L x 6 rs wide 6 tabs 0 426 ROD Valve Push NOTE 7 Co or marked end to be at va ve rocker arm NOTE 2 May have one black stripe at each end 70 72 All w 2BC 400 73 75 All 400 3796243 A R N L 7 5 gz O L blue stripe Note 1 2 70 71 All w 4BC 400 lst design 3946067 8 3 05 inlet 87 az 0 L B dia 70 71 All w 4BC 400 1st design 3946069 8 3 05 exhaust 9 5 0 L 3 B dia GM PARTS DIVISION GENERAL MOTORS CORPORATION CHEVROLET 11 0 297 0 426 0 96 REV 4 81