Exact C.I.D. for 350 bored 30 over?

Anyone worked out the exact C.I.D. for the 350 bored 30 over?

 

354.8

 

Volume of a cylinder x 8 = (pi) ( r ) (r) (H) (8)

H= stroke= 3.850

r= stock bore plus .o15"=3.80/2 +.030/2= 1.915

8= number of cylinders

pi= 3.14159

total= 354.834 cid when bored over .030

 

I've always used this one:

(Bore) x (Bore) x (stroke) x (.7854) x (8 cyl.)

 

1/2 bore x 1/2 bore x Pi (3.1416) x stroke x number of cyls

Bore: 3.830, 1/2 bore, 1.915

Stroke: 3.850

1.915 x 1.915 x 3.1416 x 3.850 x 8 = 354.84537

Do-able in both cubic inches and cc's.

(OK, nit pick about a fraction, but it all comes out virtually the same, 355 cubes).

 

Perhaps a slight discrepancy arises because you may have inadvertently misrounded the number for pi up a notch.

pi=3.14159265 ......