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Big Block Chevy Specs
Big Block Chevy
Bore & Stroke
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Engine Size
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Stock Bore
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+.060"-Over
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Stock Stroke
|
|
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3.935"
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3.995"
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3.760"
|
|
396
|
4.094"
|
4.154"
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3.760"
|
|
402
|
4.125"
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4.185"
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3.760"
|
|
427
|
4.250"
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4.310"
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3.760"
|
|
454
|
4.250"
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4.310"
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4.000"
|
|
502
|
4.468"
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4.530"
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4.000"
|
|
454 Engines
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3.760"
|
4.000"
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4.250"
|
4.500"
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4.750"
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4.875"
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Stock bore = 4.250"
|
427"
|
454"
|
482"
|
511"
|
539"
|
553"
|
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Bored .030" = 4.280"
|
433"
|
460"
|
489"
|
518"
|
547"
|
561"
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Bored .060" = 4.310"
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439"
|
467"
|
496"
|
525"
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554"
|
569"
|
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Bored .090" = 4.340"
|
445"
|
473"
|
503"
|
533"
|
562"
|
577"
|
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Bored .100" = 4.350"
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447"
|
476"
|
505"
|
535"
|
565"
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580"
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Bored .125" = 4.375"
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452"
|
481"
|
511"
|
541"
|
571"
|
586"
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To calculate the displacement of an eight-cylinder engine: bore x bore x stroke x 6.2832
Cubic inches x 16.387 = cubic centimeters. Cubic centimeters x .061 = cubic inches
BBC Engine Block Casting Numbers
BBC Oval Port Cylinder Head Casting Numbers
BBC Rectangular Port Cylinder Head Casting Numbers
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