what determines when should bore and engine
std bore is 4.050
The Bore of a 350 cid engine is 4.00, the stroke is 3.48 inch..
4.000" the engine bore size
yes
4"
Primarily the bore size. The 305 has a bore of 3.74 and the 350 is a 4.0 bore. They share the same stroke on the crank. And no, you can't bore a 305 to a 4.0 bore.
.7853x bore x bore x stroke x #of clyinders
I assume you mean engine displacement? To calculate engine displacement, use this formula: Bore x bore x stroke x .7854 x number of cylinders.
bore is the diameter of the piston and stroke is the length the piston moves in the cylinder.for example if bore x stroke is 1x3 then 1 is the diameter of the piston and 3 is the length of the cylinder.if bore is greater than stroke then it is a short stroke engine.
90mm
That'd be a motor with a 90.5 mm stroke and 69 mm bore.