SBC bore and stroke chart
 

The Small Block Chevy
Bore Stroke
x 3.00" 3.25" 3.48" 3.75"
3.500" . . 267 .
3.736" 263 285 305 329
3.750" 265 . . .
3.875" 283 307 328 354
4.000" 302 327 350 372 (383*)
4.125" 321 347 372 (377*) 400


*Designates .030" overbore typical of this combination
Factory bore/stroke combinations are linked to a typical application


For what it's worth, thought I would repost this graph. admin feel free to clean this up. :bowtie: