Intake manifolds have casting codes on them as well and with the date code you can determine what engine it came on.
Casting Year CID HP Carb Type Notes
521510 1955 287 173, 180 Rochester 1x2
521512 1955 287 200 Rochester 1x4
521570 1956 316 192, 205 Rochester 1x2
521571 1956 316 227 Rochester 1x4
523813 1957 347 227, 252 Rochester 1x2
523814 1957 347 244, 270 Rochester 1x4
528577 1958 370 240, 255 Rochester 1x2
528578 1958 370 255, 285, 315 Rochester 1x4
532119 1959 389 245, 280 Rochester 1x2
534318 1959 389 215 Rochester 1x2 425 E
532120 1959 389 260, 300, 330 Carter 1x4
536517 1960 389 215, 230, 283 Rochester 1x2
535482 1960 389 348 Carter 1x4 SD
536518 1960 389 235, 281, 303, and 333 Carter 1x4
535889 1960-61 389 348, 368 Carter 1x4 SD
538200 1961 389 215, 230, 267 and 283 Rochester 1x2
538201 1961 389 235, 276, 287 ,303 and 333 Carter 1x4
541474 1962 389 215, 230, 267, and 283 Rochester 1x2
541475 1962 389 235, 276, 287, 303 and 333 Carter 1x4
544128 1962 389 385 Carter 1x4 SD
544128 1962 421 353 Carter 1x4 SD
9770274 1963 326 280 Carter 1x4
9770274 1963 389 235, 276, 303 Carter 1x4
9770274 1963 421 320, 353 Carter 1x4
544128 1963 421 353, 390 Carter 1x4 SD
9772390 1963 421 363 Carter 1x4 SD
9770273 1963-64 326 250, 260 Rochester 1x2
9770273 1963-64 389 215, 230, 235, 267 and 283 Rochester 1x2
9770274 1964 389 235, 303, 306 Carter 1x4
9770274 1964 421 320 Carter 1x4
9778817 1965 326 250 Rochester 1x2
9778817 1965 389 256, 290 Rochester 1x2
9778816 1965 326 285 Carter 1x4
9778816 1965 389 276, 325, 333, and 335 Carter 1x4
9778816 1965 421 338 Carter 1x4
9782894 1966 326 250 Rochester 1x2
9782894 1966 389 256, 290 Rochester 1x2
9784438 1966 389 256, 290 Rochester 1x2
9782896 1966 326 285 Carter 1x4
9782896 1966 389 325, 333, 335 Carter 1x4
9782896 1966 421 338, 350 Carter 1x4
9784438 1966-67 326 250 Rochester 1x2
9784438 1967 400 255, 265, 290 Rochester 1x2
9782896 1967 326 285 Carter 1x4
9782896 1967 400 293, 325, 333, and 350 Carter 1x4
9786282 1967 400 335, 360 Qjet 1x4 GTO
9786286 1967 400 325, 335, 360 Qjet 1x4 GTO
9786286 1967 421 360, 376 Qjet 1x4
9790418 1968 350 265 Rochester 1x2
9790418 1968 400 265, 290 Rochester 1x2
9790140 1968 350 320 Qjet 1x4
9790140 1968 400 335, 340, 350, 360 and 366 Qjet 1x4
9790140 1968 428 375, 390 Qjet 1x4
9794233 1968-69 350 265 Rochester 1x2
9794233 1968-69 400 265, 290 Rochester 1x2
9794234 1968-69 350 320, 330 Qjet 1x4
9794234 1968-69 400 330, 335, 340, 360 and 366 Qjet 1x4
9794234 1968-69 428 360, 375, 370, and 390 Qjet 1x4
1201? 1969 303 Holley 1x4 short RA
5545288 1969 400 Holley 1x4 RA
59796614 1969 303 Qjet 1x4 short RA
9796614 1969 400 345, 370 Qjet 1x4 RA4
9799067 1970 350 255 Rochester 1x2
9799067 1970 400 265 Rochester 1x2
9799068 1970 400 330, 350 Qjet 1x4
545288 1970 400 Holley 1x4 RA
59799084 1970 400 370 Qjet 1x4 RA
4481732 1971 350 250 Rochester 1x2
481732 1971 400 265 Rochester 1x2
481732 1971 455 280 Rochester 1x2
481733 1971 400 300 Qjet 1x4
481733 1971 455 325, 280 Qjet 1x4
483674 1971 455 335 Qjet 1x4 HO
485911 1972 350 160, 175 Rochester 1x2
485911 1972 400 175, 200 Rochester 1x2
485911 1972 455 185, 200 Rochester 1x2
485912 1972 400 250 Qjet 1x4
485912 1972 455 250 Qjet 1x4
488945 1972 455 300 Qjet 1x4 HO
492292 1973 350 150, 175 Rochester 1x2
492292 1973 400 170, 185 Rochester 1x2
491244 1973 400 230 Qjet 1x4
491244 1973 455 250 Qjet 1x4
494744 1973 400 230 Qjet 1x4
494744 1973 455 250 Qjet 1x4
494282 1973 400 230 Qjet 1x4
494282 1973 455 250 Qjet 1x4
494405 1973 455 290 Qjet 1x4 SD
494419 1973 455 290 Qjet 1x4 SD
485640 1973 455 290 Qjet 1x4 SD
495104 1974 350 155, 170 Rochester 1x2
495104 1974 400 190 Rochester 1x2
495106 1974 350 200 Qjet 1x4
495106 1974 400 200, 225 Qjet 1x4
495106 1974 455 250 Qjet 1x4
495107 1974 455 290 Qjet 1x4 SD
496142 1975 350 155 Rochester 1x2
496142 1975 400 170 Rochester 1x2
496140 1975 350 175 Qjet 1x4
496140 1975 400 185 Qjet 1x4
496140 1975 455 200 Qjet 1x4
525353 1976 400 170 Rochester 1x2
525355 1976 350 165 Qjet 1x4
525355 1976 400 185 Qjet 1x4
525355 1976 455 200 Qjet 1x4
525353 1976-77 350,160 Rochester 1x2
526213 1977 301 135 Rochester 1x2
525355 1977 350 170 Qjet 1x4
525355 1977 400 180, 200 Qjet 1x4
10000518 1978 301 150 Qjet 1x4
10003395 1978 400 180, 220 Qjet 1x4
10000518 1979 301 150 Qjet 1x4
10003395 1979 400 220 Qjet 1x4
10000516 1978-81 301,135 Rochester 1x2
