The Chevy cylinder head casting codes are one of the best ways to identify a Chevy cylinder head. It is usually found on the top of the head in between two valves and the rocker arm studs.
Chevy Big Block Cylinder Head Codes (ALL)
Casting No | Years | CID | Intake | Exhaust | Chamber | CC |
10051128 | 1990-94 | 454 | 2.19 | 1.88 | Semi Open | |
10101136 | 1991-94 | 454 | 2.06 | 1.72 | Open | |
10121033 | 1978-88 | 454 | 2.06 | 1.72 | Open | |
12352783 | 1979-93 | 454 | 2.06 | 1.72 | Open | |
14011077 | 1989-94 | 454 | 2.19 | 1.88 | Open | 118 |
14025175 | 1983-93 | 454 | 2.06 | 1.72 | Open | |
14044861 | 1989-94 | 454 | 2.19 | 1.88 | Open | 105 |
14081044 | 1986-90 | 454 | 2.06 | 1.72 | Open | |
14092359 | 1986-89 | 427 | 2.06 | 1.72 | Open | |
14092360 | 1985-89 | 454 | 2.06 | 1.72 | Open | |
14096188 | 1987-94 | 454 | 2.19 | 1.88 | Open | 118 |
14097088 | 1989-94 | 502 | 2.19 | 1.88 | Open | 118 |
14101398 | 1986-90 | 454 | 2.06 | 1.72 | Open | |
330864 | 1970-81 | 366/427/454 | 2.06 | 1.72 | Open | |
330865 | 1970-84 | 366/427/454 | 2.06 | 1.72 | Open | |
336765 | 1973-84 | 427/454 | 2.06 | 1.72 | Open | |
336781 | 1973-85 | 454 | 2.06 | 1.72 | Open | 113 |
343771 | 1968-85 | 366/427/454 | 2.06 | 1.72 | Open | |
343772 | 1976-84 | 366/427/454 | 2.06 | 1.72 | Open | |
343783 | 1975-78 | 454 | 2.06 | 1.72 | Open | |
346236 | 1975-87 | 454 | 2.06 | 1.72 | Open | 113 |
346238 | 1975-87 | 454 | 2.06 | 1.72 | Open | 113 |
353049 | 1970-73 | 402/454 | 2.06 | 1.72 | Open | 113 |
3830817 | 1965 | 409 | 2.06 | 1.72 | Closed | |
3852583 | 1963-65 | 409 | 2.19 | 1.72 | Closed | |
3856206 | 1965-66 | 396 | 2.06 | 1.72 | Closed | 97.2 |
3856208 | 1965 | 396 | 2.19 | 1.72 | Closed | 108.9 |
3856213 | 1966-70 | 366 | 2.06 | 1.72 | Closed | |
3872702 | 1966 | 396 | 2.06 | 1.72 | Closed | 98.4 |
3872702 | 1966 | 427 | 2.06 | 1.72 | Closed | 98.4 |
3873858 | 1966-67 | 396 | 2.19 | 1.88 | Closed | 108.9 |
3873858 | 1966-68 | 427 | 2.19 | 1.72 | Closed | 108.9 |
3876875 | 1966-70 | 427 | 2.06 | 1.72 | Closed | |
3904390 | 1966-67 | 396 | 2.06 | 1.72 | Closed | 98.4 |
3904390 | 1966-68 | 427 | 2.06 | 1.72 | Closed | 98.4 |
3904391 | 1965-67 | 396 | 2.19 | 1.88 | Closed | 106.8 |
3904391 | 1965-68 | 427 | 2.19 | 1.72 | Closed | 106.8 |
3904392 | 1967 | 427 | 2.19 | 1.72 | Closed | 106.8 |
3904393 | 1966-68 | 366 | 2.06 | 1.72 | Closed | |
3909802 | 1966-67 | 396 | 2.06 | 1.72 | Closed | 100.9 |
3909802 | 1966-68 | 427 | 2.06 | 1.72 | Closed | 100.9 |
3917215 | 1967-69 | 396 | 2.06 | 1.72 | Closed | 100.9 |
3917215 | 1967-70 | 427 | 2.06 | 1.72 | Closed | 100.9 |
3917219 | 1966-70 | 366/427 | 2.06 | 1.72 | Closed | |
3919840 | 1967-69 | 396 | 2.19 | 1.72 | Closed | 106.8 |
3919840 | 1967-70 | 427 | 2.19 | 1.88 | Closed | 106.8 |
3919842 | 1968-69 | 396 | 2.19 | 1.88 | Closed | 106.8 |
3919842 | 1968-70 | 427 | 2.19 | 1.84 | Closed | 106.8 |
3931063 | 1969-70 | 396 | 2.06 | 1.72 | Closed | 100.9 |
3931063 | 1969-71 | 427 | 2.06 | 1.72 | Closed | 100.9 |
3933148 | 1969 | 366/396 | 2.06 | 1.72 | Open | 112.1 |
3933149 | 1969-70 | 427 | 2.06 | 1.72 | Open | 122.1 |
3946074 | 1969-71 | 396/402 | 2.19 | 1.88 | Open | 118 |
3946074 | 1969-72 | 454 | 2.19 | 1.88 | Open | 118 |
3964280 | 1966-70 | 427 | 2.06 | 1.72 | Closed | |
3964280 | 1966-71 | 454 | 2.06 | 1.72 | Closed | |
3964290 | 1969-70 | 396/402 | 2.06 | 1.72 | Closed | 100.9 |
3964290 | 1969-71 | 427 | 2.06 | 1.72 | Closed | 100.9 |
3964290 | 1969-72 | 454 | 2.06 | 1.72 | Closed | 100.9 |
3964291 | 1969-70 | 396/402 | 2.19 | 1.88 | Closed | 109 |
3964291 | 1969-71 | 427 | 2.19 | 1.88 | Closed | 109 |
3964291 | 1969-72 | 454 | 2.19 | 1.88 | Closed | 108 |
3964292 | 1970 | 454 | 2.19 | 1.88 | Closed | 109 |
3965198 | 1969 | 396 | 2.06 | 1.72 | Closed | |
3975950 | 1968-70 | 366/427 | 2.06 | 1.72 | Closed | |
3986133 | 1970-85 | 366/427 | 2.06 | 1.72 | Closed | |
3986136 | 1970-84 | 366/427 | 2.06 | 1.72 | Closed | |
3993820 | 1971 | 402 | 2.06 | 1.72 | Open | 113 |
3993820 | 1971 | 454 | 2.06 | 1.72 | Open | 113 |
3994025 | 1971 | 454 | 2.19 | 1.88 | Open | 118 |
3994026 | 1971 | 454 | 2.19 | 1.88 | Closed | 118 |
3999241 | 1972 | 402 | 2.06 | 1.72 | Open | 113 |
3999241 | 1972 | 454 | 2.06 | 1.72 | Open | 113 |
473328 | 1968-85 | 366 | 2.06 | 1.72 | Open | |
6258723 | 1971 | 454 | 2.19 | 1.88 | Open | |
6272292 | 1971 | 402 | 2.06 | 1.72 | Open | |
6272292 | 1971 | 454 | 2.06 | 1.72 | Open | |
6272990 | 1971-94 | 454 | 2.19 | 1.88 | Open | 118 |