blockcasting01All engine blocks have a casting code. This code will tell you the year it was to be used. However, these codes were used for more than one year and could have different machining or even different main caps.

Where to find the Casting Code:

  • Casting codes for 1955 to 1963 are found on the passengers side of the block.
  • Casting codes for from 1964 to 1967 are found on the distributor pad, except the 421′s
  • Casting codes for from March 1967 on are found on the rear of the block just behind the number 8 cylinder

 

Casting # Year CID HP Main Notes
518037 1955 287 173, 180, 200 2
521560 1956 316 192, 205, 216, 227, 285 2
523293 1957 347 227, 244, 252, 270, 290, 317 2
528456 1958 370 240, 255, 270, 285, 300, 315, 330 2
532000 1959 389 215, 245, 260, 280, 300, 315, 330 345 2
536387 1960 389 215, 230, 235, 281, 283, 303, 318 2
536387 1960 389 333, 348, 363 4 SD
542426 1961 389 SR
538181 1961-62 389 368, 385 4
538181 1961-62 421 373, 405 4 SD
548913 1962 421 405 4 SD (late)
543680 1963 389 215, 230, 235, 267.-283, 303, 313 2
544988 1963 421 320, 353, 370 2
544988 1963 421 390, 405, 410 2 SD
548211 1963 326 250, 260, 280 2
9773153 1964 326 250, 280 2
9773155 1964 389 215, 230, 235, 267, 283, 303, 306 2
9773156 1964 326 325, 330, 348 2
9773157 1964 421 320, 350, 370 2
9773383 1964 389 2
9773384 1964 421 2
9778789 1965-66 389 256, 290, 326, 333, 335, 338, 360 2
9778791 1965-66 421 338, 350, 256, 376 2
9778840 1965-66 326 250, 285 2
9782611 1966 421 338, 350, 256, 376 2
9786133 1967 400 255, 260, 265, 290, 325, 335, 360 2&4
9786135 1967 428 360, 376 4
9786339 1967 326 250, 285 2
9787840 1967 326 2
9792250 1968 400 2
9792506 1968 400 335, 360 4 RA
545887 1969 400 4 RA5
546313 1969 303 4 RA5 short deck
9792506 1969 400 4 RA4
9792968 1969 400 375 4 RA5
9790071 1968-69 400 265, 290, 330, 340, 350, 366 2&4
9790079 1968-69 350 265, 320, 325 2
9792968 1968-69 428 360, 370, 375, 390 2&4
481708 1970 400 4 RA5
9799140 1970 455 360, 370 2
9799914 1970 400 265, 290, 330, 350 2
9799914 1970 400 345, 366 4 RA3
9799915 1970 400 370 4 RA4
9799916 1970 350 255 2
481990 1971-72 350 175, 250 2
483677 1971-72 455 200, 250, 280, 325 2
483677 1971-72 455 300, 335 2&4 HO
481988 1971-74 400 200, 250, 265, 300 2
485428 1971-74 455 200, 215, 250, 265, 300 2&4
485212 1972 366 4
487638 1972 455 2
493482 1973 455 2
490132 1973-74 455 290 4 SD
488986 1973-76 350 150, 155, 170, 175 2
488986 1975 400 2 early
500557 1975 400 2 late
500810 1975 350 2 late
500813 1975-76 455 2
525934 1977 301 135 2
568557 1977-79 400 180, 200, 220 2