I'm a little confused as to which crankshaft will give how many cubic inches… I know this is in relation with the bore of the block, but what stroke does it takes to make a 231, a 252, a 271, etc… Does a 4.1 L = 271 cu. in. ?…or is it a 252 ?
Claude.
The most popular crank is 3 5/8" or 3.625". A connecting rod is not relevant when calculating cubic inch.
I supplied a list as to help you get an understanding how bore and stroke relates to cubic inch. All figures are accurate to within .5 cubic inch in table below.
3.8L = 3.8" bore
4.1L = 3.965" bore
231 = 3.4" stroke x 3.8" bore
234 = 3.4" stroke x 3.820" bore
235 = 3.4" stroke x 3.830" bore
236 = 3.4" stroke x 3.840" bore
247 = 3.625" stroke x 3.8" bore
249 = 3.625" stroke x 3.820" bore
250 = 3.625 stroke x 3.830" bore
252 = 3.625" stroke x 3.840" bore
252 = 3.4" stroke x 3.965" bore
256 = 3.4" stroke x 4.0" bore
257 = 3.4" stroke x 4.010" bore
259 = 3.4" stroke x 4.020" bore
260 = 3.4" stroke x 4.030" bore
261 = 3.4" stroke x 4.040" bore
263 = 3.4" stroke x 4.050" bore
264 = 3.4" stroke x 4.060" bore
269 = 3.625" stroke x 3.9625" bore
273 = 3.625" stroke x 4.0" bore
274 = 3.625" stroke x 4.005" bore
275 = 3.625' stroke x 4.010" bore
276 = 3.625" stroke x 4.020" bore
277 = 3.625" stroke x 4.030" bore
279 = 3.625 stroke x 4.040" bore
280 = 3.625" stroke x 4.050" bore
281 = 3.625" stroke x 4.060" stroke