Chevrolet Small Block Intake Manifold Casting Numbers

Years Casting CID bbls Material Carb Application
1974-76 340261 350 4 iron Q-jet A B F X/160,185,195,245,250HP
1973-81 340266 305,350 2 iron – A B F G
1982-85 340281 305,350 4 iron Q-jet B F
1976-82 346249 305,350 4 iron Q-jet all/155,165,205HP
1976-82 346250 305,350 4 iron Q-jet all
1973-77 346260 305,350 2 iron – A B F
1978-80 373598 305 2 al – G
1976-82 458520 305,350 4 al Q-jet all
1980-82 1403372 305,350 TTBI al cross-fire F Y
1955 3704790 265 2 iron – B
1955 3711348 265 4 iron – B Y
1956 3728725 265 8 al WCFB Y/225hp, 1st design
1986-57 3731394 283 8 al WCFB Y/225hp, 2nd design
1957 3731398 283 4 iron WCFB, 4jet B Y
1957 3732880 265,283 2 iron – B
1956 3735444 265 2 iron – B
1956 3735448 265 4 iron 4BBL Y /210hp
1956 3737109 265 4 iron – B
1957 3739653 283 8 al – Y /245,270HP
1957 3741193 283 FI al – B
1957 3746826 265,283 2 iron – B
1958-61 3746829 283 4 iron WCFB, Qjet B Y/230hp
1962-63 3783244 327 4 iron WCFB, Qjet B Y/250hp
1963 3794129 327 4 al AFB Y 340hp
1962 3795397 327 4 iron AFB Y 340hp
1972 3797771 350 4 iron – A B F
1962-64 3799349 327 4 iron AFB B Y/300hp
1963-65 3826810 327 FI – – Y
1956-57 3837109 265,283 4 iron WCFB, Qjet B Y/210hp
1964-65 3840905 283 2 iron – A B X C K
1964-65 3844457 327 4 iron WCFB, Qjet A B X Y/250hp, Srvc repl.
1963-65 3844459 327 4 iron AFB A B X Y/300hp, srvc repl.
1964-65 3844461 327 4 al Holley Y/350,360hp
1962-65 3866922 283,327 4 iron Qjet A B X/220hp/250hp, marine use
1966-67 3872783 327 4 iron Holley A B X/275hp, w/o AIR, srvc. repl.
1966 3875954 327 4 iron Qjet A B X/275hp, w/AIR
1965 3877652 283,327 2 iron – A B C K,trk
1966-67 3877656 327 4 al Holley 350hp Hirise
1966 3882858 283 4 iron Qjet A B X/220hp
1966-67 3890490 327 4 al Holley X Y/350hp hirise
1966-68 3905393 327 4 iron Q-jet A B F X/275hp
1967-68 3910601 327 2 – – A F X
1969-70 3916313 307,350 2 – – all
1967-68 3917610 302 4 al Holley Z-28, F, hirise
1968 3919801 307,327 2 iron – A B C X
1967-68 3919803 327,350 4 iron Qjet A B F X Y/250,275,325,350HP
1969 3927183 307,327 2 iron – A B F X
1969 3927184 350 4 iron Qjet A B F X Y/255,300,350HP, srv. rep.
1969 3932472 302 4 al Holley Z-28, F, Hirise
1967-69 3941126 302 8 al Holley Z28 X ram (bottom) released to race teams in ’67 w/o casting#
1967-69 3941130 302 8 al Holley Z28 X ram (top) released to race teams in ’67 w/o casting#, did have Winter Foundry ‘snowflake” logo.
1969-70 3958622 307,327 2 iron
1969-70 3958626 350 2 iron
1971-72 3959594 350 4 al Holley Y, Z28, LT1, Hirise, 330/255hp
1970 3965577 350 4 iron Qjet B F X/300,350hp
1970 3972110 350 4 al Holley Y, Z28, LT1 360,370hp, Hirise
1970 3972114 350 4 al Z-28, F
3972116 350 4 al Holley hirise, service repl for ’70 LT1
1971 3972361 350 4 al Holley Z-28, F
1969-71 3973465 307,327 2 – – A B F X
1971 3973469 350 4 iron Qjet B F Y/270hp
1969-70 3987361 350 – iron –
1971 3990948 350 – iron –
1973 3991004 350 – iron –
1971 3991005 307 iron
1973 3997770 350 4
1973 3997771 350 4 iron Qjet all/175,190,245,250hp
1973 3997772 307 – iron –
1972 6262928 350 – iron –
6262930 – iron Y
1972 6262932 350 iron –
1971-72 350 4 iron –
1972 6263751 350 4 iron Qjet all, 175,200hp
1973 6271060 350 – iron
1957 7014360 283 FI al –
1957 7014520 283 FI al –
1957-58 7014800 283 FI al –
1958-59 7014900 283 FI al –
1958 7014960 283 FI al –
1959-61 7017200 283 FI al
1959-60 7017250 283 FI al
1959-60 7017300 283 FI al
1960-61 7017310 283 FI al
1960 7017320 283 FI al
1962 7017355 327 FI al
1962 7017360 327 FI al –
1962-63 7017375 327 FI al –
1964-65 7017380 327 FI al –
1979-80 14007374 305 2 al –
1981 14014432 350 4 al –
1978-85 14057053 305,350 4 al Qjet Pass, Camaro, Truck

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