VALVE CHART Inlet f STD 003 O S 0150 S 0200 8 0300 S 0400 8 55 56 ALL 265 59 Ser 4 6 w L D 283 60 62 Ser 40 50 283 63 66 Ser 50 230 250 283 3774052 3786360 3786361 3786362 55 62 ALL 6 cyl 3815082 56 59 ALL 322 3750564 57 59 ALL 283 exc L D 60 64 Ser 60 283 327 63 64 ALL 292 65 66 ALL 292 327 3819002 3819003 3819004 3819005 NOTE Aluminized S8 ALL 348 3750945 3750947 3750948 59 61 ALL 348 3754142 3755332 3755334 3755336 62 65 ALL 348 409 3815642 3815703 3815704 3815705 65 66 ALL 351 24618010 2461802 2461803o 2461804 65 66 ALL 478 24618090 24618100 24618110 24618120 66 ALL 366 3887127 3887138 3887140 3887141 NOTE Extreme care should be exercised when selecting replacement Inlet and Exhaust Valves for 1963 Ser 60 327 cu in Engines Approximately 1200 Cylinder Heads were used in production which have one 1 or more 003 O S Valves These Cylinder Heads may be identified by the numeral 3 stamped directly below the casting number 0 297 VALVE Exhaust Refer to following Chart for Model Application Port List Port List Port List Port List No Price No Price No Price No Price 1168345 6 15 3732758 2 64 3754143 6 85 3839387 2 21 24618050 7 50 3732759 2 92 3755339 7 35 3840001 2 64 24618060 7 80 3735316 5 90 3755340 7 35 3840002 2 92 24618070 7 80 3741954 9 65 3755341 7 35 3840003 2 92 24618080 7 80 3741955 9 65 3781679 7 15 3859914 6 45 24618130 9 40 3741956 9 65 3814536 7 55 3881808 6 95 24618140 9 70 3747312 9 65 3814537 7 55 3881810 6 95 24618150 9 70 3748242 6 25 3814538 7 55 3881812 6 95 24618160 9 70 3748244 6 25 3836026 1 98 5196606l 3 89 3731212 2 21 3748245 6 25 STD 003 O S 015 O S 020 O S 030 O S 040 O S SS Ser 4 6 cyl exc H D 3836026 55 59 ALL 265 283 exc Ser 6 w H D 283 60 66 ALL 283 exc Ser 60 3839387 3840001 3840002 3840003 55 56 ALL 6 cyl exc 1955 Ser 4 57 66 ALL 6 cyl exc 261 292 3731212 3732758 3732759 3840003 56 59 ALL 322 1168345 57 66 ALL 261 292 57 59 Ser 6 w I LD 283 60 66 Ser 60 283 327 3735316 T 3748242 T 3748244 T 3748245 T NO l E May also be used on 1955 56 2 Ton jobs for heavy duty usage 58 ALL 348 e 3747312 3741954 3741955 3741956 NOTE With stellite seat and sodium fluid 59 61 ALL 348 3754143 T 3755339 T 3755340 T 3755341 T 62 66 ALL 159 212 318 5196606 62 65 ALL 348 409 3781679 3814536 3814537 3814538 65 66 ALL 351 24618050 24618060 24618070 246180 65 66 ALL 478 24618130 24618140 24618150 24618160 66 ALL 366 3859914 3881808 3881810 3881812 NOTE Extreme care should be exercised when selecting replacement Inlet and Exhaust Valves for 1963 Ser 60 327 cu in Engines Approximately 1200 Cylinder Heads were used in production which have one 1 or more 003 O S Valves These Cylinder Heads may be identified by the numeral 3 stamped directly below the casting number TNOTE With stellite seat 1966 Chovrolot Motor Division 89 0296 0297 Gonorol Motors Corporation HDI REVISED MAY 1 i966