Formula
Swept volume is the area of the bore times the stroke times the number of cylinders. Cubic centimetres use the exact identity 16.387064 cm³ per cubic inch. Litres are cc divided by 1,000. Going backward from litres or cc does not invent a bore and a stroke. It reports the total volume. Per-cylinder volume needs a cylinder count, which is still on the form.
ci = (π / 4) × bore² × stroke × cylinders
cc = ci × 16.387064
L = cc ÷ 1,000
A marketed “350” is the rounded cubic-inch name. A 4.00 inch bore and a 3.48 inch stroke in eight cylinders is 349.85 ci, which is 5.733 L. The compression calculator takes this swept volume and adds the chamber.
Worked examples
4.00 × 3.48, 8 cylinders. 349.85 ci, 5,733 cc, 5.733 L. One cylinder is 43.73 ci.
2.0 litres, reported as a total. 2,000 cc and 122.0 ci. The bore and stroke fields are not used in that mode.
Reference
16.387064 cm³ = 1 in³. A litre is 1,000 cc, which is 61.0237 ci.
Questions
What displacement is a 4.00 inch bore and a 3.48 inch stroke, eight cylinders?
349.8 cubic inches, 5,733 cc, 5.733 litres. That is the nominal Chevrolet 350. The marketed 350 is the rounded cubic-inch figure. The bore and stroke multiply out just under it.
How do cubic inches become litres?
One cubic inch is 16.387064 cubic centimetres. Divide by 1,000 for litres. The page also runs the identity backward from a litre or a cc figure.
Does this include the combustion chamber?
No. Displacement is the swept volume, bore and stroke and cylinder count. The chamber is the compression-ratio page.
Sources
- Swept volume (π/4) × bore² × stroke × cylinders.
- 1 in³ = 16.387064 cm³. Litres = cc / 1,000.