A 350 Cubic inch Chevrolet engine has a 4.00 inch bore with a 3.48 inch stroke to produce 349.67 cubic inches of displacement that is rounded up to 350 cubic inches.
This knowledge might be useful for a bar-bet at the local watering hole.
The bore and stroke is---3.740 bore and 3.480 stroke. STOCK 305
Bore = 4.00 inches Stroke = 3.48 inches Measure cylinder bore with heads off, measure crank main center-line to rod main center-line then multiply by 2 to get stroke. Stock Chevy 350 is as above.
The advertised Bore in inches is 4.125 The advertised stroke in inches is 3.750 That is factory stock info.
4.310 bore X 4.250 stroke -- basically a 454 bored .060 over with a 1/4 inch longer stroke crankshaft as compared to the 4.250 stock bore size and 4.000 inch stroke of a 454. Just as an aside FYI, 427's have the same stock bore size as a 454's but have a 3.760 stroke.
Bore 4.250" Stroke 4.00"
BORE is 3.740 and the stroke is 3.480
4.00 bore 3.48 stroke
The bore would be 4.310" and the stroke is 4.00"
4.312 bore x 3.50 stroke.
bore 3.497 stroke 3.81
3.498 bore with 4.25 stroke
4.000 inches -- same bore size as a Chevy 350, the difference is a 327 uses a 3.250 stroke and the 350 uses a 3.480 stroke.