427 ENGINE ASSEMBLY 0 206 COVER PIN Crankcase Front End 66 69 All 427 330850 1 12 40 COVER 66 69 All 427 3836903 2 23 PIN dowel B x 5 E 0 738 0 207 GASKET Crankcase Front End Cover 66 68 All 427 3860096 1 59 10 holes 69 All 427 3935449 1 68 GASKET 0 213 SEAL Crankcase Front End Cover 66 69 All 427 3860095 1 3 75 SEAL 3 O D stamped 3860095 0 269 HEAD Cylinder NOTE 1 When using on models prior to 1968 use pipe plug 444667 or 444746 to plug water temp switch hole 66 69 All 427 exc Sp H Per 3931062 2 189 00 w valve guide Note 1 66 69 All w Sp H Per 427 3919839 2 212 00 HEAD w valve guide cast iron head I Note 1 0 289 GASKET Cylinder Head 66 69 All 427 330860 2 4 30 GASKET 22 Z 0 L 66 69 All 427 465397 1 56 75 GASKET UNIT 0 293 BOLT PIN Cylinder Head 66 69 All 427 3877668 24 68 long 4 Z O L raised cross on top of head 66 69 All 427 3877669 A R 61 BOLT short 2 ig O L raised cross 66 69 All 427 585927 A R 28 PIN 5 IG x 6 66 69 All 427 3894327 4 28 PIN special z l D x 5 B diameter 0 296 VALVE Inlet 66 69 All 427 w Sp H Per 3864808 A R 11 70 VALVE std 66 69 All 427 exc Sp H Per 6263754 A R 8 45 VALVE std 66 69 All 427 exc Sp H Per 6263767 A R 8 45 VALVE 003 O S 66 69 All 427 exc Sp H Per 6263768 A R 8 45 VALVE 015 0 S 66 69 All 427 exc Sp H Per 6263769 A R 8 45 VALVE 030 0 S 0 297 VALVE Exhaust 66 69 All 427 exc Sp H Per 3931006 A R 9 85 VALVE std 66 69 All 427 exc Sp H Fer 3931097 A R 9 85 VALVE 003 O S 66 69 All 427 exc Sp H Per 3931098 A R 9 85 VALVE 015 0 S 9 66 69 All 427 exc Sp H Per 3931099 A R 9 80 VALVE 030 0 5 66 69 All 427 w Sp H Per exc Alum Hd 3860002 A R 13 70 VALVE std 0 303 SPRING SHIM Valve NOTE 1 When using 3970627 it is necessary to discard the valve spring cap and valve stem oil seal which were used with lst design spring 69 All 427 exc Police H Per Sp H Per 3856860 16 3 00 w damper stripe of blue plus aluminum dk green purple or tan 66 69 Pass 427 3970627 16 4 05 SPRING Note 1 66 69 AII 427 3875916 16 31 SHIM spring 5 6 l D x 1 M O D x M thick 0 308 SEAL Valve Spring Cap NOTE 1 For 2nd design application see 3964264 Cap Assy Group 0 309 66 69 All 427 1st design 460527 16 N L SEAL valve stem oil inlet and exhaust Note 1 0 309 CAP Valve Spring NOTE 1 For 2nd design application see 3964264 Cap Assy NOTE 2 1st design vehicles required a cap and seal while 2nd design vehicles require 3964264 Cap Assy 66 69 All 427 lst design 3859909 16 68 inlet and exhaust 1 gz O D stamped T Note 1 69 All 427 2nd design 3964264 16 94 CAP w deflector Note 2 0 310 KEY Valve Stem 66 69 All 427 3947880 32 31 KEY green 0 333 ARM Valve Rocker with Adjusting Screw and Nut 66 69 All 427 6258611 16 N L ARM ball rod kit inside rocker arm at pilot end 0 386 COVER GROMMET Valve Rocker Arm NOTE 1 May be used with or without closed vent GNI PARTS DIVISION GENERAL MOTORS CORPORATION CHEVROLET 11 0 206 0 386 0 114 REV 4 81