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Common V8 Bore Center Distances

    The data below reflects the spacing of cylinder bores in the engine block cylinder bank. Motors in the same table row generally have a common origin and similar development. In some cases, crankshaft interchange may be possible among motors in the same row; major machining may be necessary.
    This is also a useful indicator of potential intake manifold adaptation, not only among motors in the same row, but (with more extensive modification) between motors with very similar bore center distances. E.g.: Chrysler B/RB at 4.80” and Buick BB at 4.75” are very close.
    Column 2 (“Ports”) indicates the intake port layout pattern. “00-00” represents 2 pairs of ports on each cylinder bank, “0-0-0-0” is equally-spaced individual ports, and “0-00-0” is unique to early Buicks (resembles common exhaust port layout).

Motor Ports Year ID Displacement Bore Ctr.
Ford “Modular” V8 0-0-0-0 1991-*   4.6, 5.4 3.9370”
Dodge hemi & poly 0-0-0-0 1953-58   241, 259, 270, 315, 325” 4.1875”
Buick 0-00-0 1962   215” 4.240”
00-00 1965-70   300, 340, 350”
Oldsmobile, Pontiac 00-00 1962-?   215”
DeSoto hemi 0-0-0-0 1952-57   276, 291, 330, 341, 345” 4.3125”
Ford 0-0-0-0 1962-* 335, M 221, 260, 289, 302, 351, 400” 4.380”
Chevrolet 00-00 1955-* SB 265, 283, 302, 327, 350, 400” 4.400”
Plymouth 0-0-0-0 1956-* poly A 277, 301, 303, 318, 326” 4.460”
00-00 1964-* wedge LA 273, 318, 340, 360”
Chrysler hemi & poly 0-0-0-0 1951-58   301, 331, 354, 392” 4.5625”
Pontiac 00-00 1955   316, 326, 347, 350, 370, 389, 400, 421, 428, 455” 4.620”
Oldsmobile 00-00 1964-*   330, 350, 400, 403, 425, 455” 4.625”
Ford 0-0-0-01958-71 FE 332, 352, 390, 406, 427, 428” 4.630”
AMC 00-00 1966-*   290, 304, 343, 360, 390, 401” 4.750”
Buick 00-00 1967-* BB 400, 430, 455” 4.750”
Chrysler 00-00 1958-78 wedge B/RB 350, 361, 383, 400, 413, 426, 440” 4.800”
0-0-0-0 1964-* hemi RB 426”
Chevrolet 00-00 1958-* W & BB 348, 366, 396, 402, 409, 427, 454” 4.840”
Ford 0-0-0-0 1968-* 385, FF 370, 385, 429, 460” 4.900”
Cadillac 00-00 1967-*   425, 472, 500” 5.000”

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