Ross Pistons ::

Input Type: English Metric

	Cylinder Bore (inches)
	Cranshaft Stroke (inches)
	Piston Deck Clearance (inches) (Enter - if deck is proud)
	# Cylinders
	Head CC
	Distance From Top of Top Ring Groove to Deck of Piston (inches)
	Degrees Top Land is Tapered (if not tapered leave blank..do not enter 0)
	Gasket Thickness* (inches)
	Compression Ratio Desired
(* if you know gasket volume enter a number which will give correct cc in "gasket volume" box below)
	Cubic Inches
	Liters
	Deck Volume
	Net Dome CC Needed
	Gasket Volume

POPULAR RACING FORMULAS
Engine Cubic Inches = Bore (in.) X Bore (in.) X Stroke (in.) X number of Cylinders X .7854

Engine Cubic Liters = Bore (mm) X Bore (mm) X Stroke (mm) X Number of Cylinders X .7854

Find the Stroke When The Bore And Cubic Inches Is Known:
Cubic Inches or Liters ÷ Bore ÷ Bore ÷ .7854 ÷ # of Cylinders
Example: Chevy 350
350 ÷ 4.000 = 87.5 ÷ 4.000 = 21.875 ÷ .7854 = 27.852 ÷ 8 = 3.482

Find the Bore When The Stroke And Cubic Inches is Known:
Cubic Inches or Liters ÷ Stroke ÷ .7854 ÷ # of Cylinders then find Square Root of This Answer
Example: Chevy 350
350 ÷ 3.480 = 100.575 ÷ .7854 = 128.056 ÷ 8 = 16.007
Look up 16 on the Square Root Table below and the Square Root is 4.000

SQUARE ROOT TABLE:
No.	Sq. Root	No.	Sq. Root	No.	Sq. Root	No.	Sq. Root
1	1.000	10	3.162	19	4.359	28	5.292
2	1.414	11	3.317	20	4.472	29	5.385
3	1.732	12	3.464	21	4.583	30	5.477
4	2.000	13	3.606	22	4.690	31	5.568
5	2.236	14	3.742	23	4.796	32	5.657
6	2.449	15	3.873	24	4.899	33	5.745
7	2.646	16	4.000	25	5.000	34	5.831
8	2.828	17	4.123	26	5.099	35	5.916
9	3.000	18	4.243	27	5.196	36	6.000

Head Gasket Volume = Gasket Bore (in.) X Gasket Bore (in.) X 12.87 X Compressed Gasket Thickness = gasket volume in CCs. Note : gasket bore diameters are usually about .060 larger than the cylinder bore diameter.

Deck Volume = Bore Diameter X Bore Diameter X Deck Height X 12.87 = Deck Volume in CCs.

CONVERSIONS:
1 Cubic Inch = 16.38 CCs
Cubic Inches to CCs = Cubic Inches X 16.38
Cubic Inches to Liters = Cubic Inches X .01638
CCs to Cubic Inches = CCs divided by 16.38
Liters to Cubic Inches = Liters divided by .01638