no 351w's have 3" main bore size....and 302's have 2.5" mains
BORE is 3.740 and the stroke is 3.480
Bore 4.250" Stroke 4.00"
4 inch bore, 3.5 inch stroke.
4.312 bore x 3.50 stroke.
4.00 bore 3.48 stroke
The bore would be 4.310" and the stroke is 4.00"
bore 3.497 stroke 3.81
4 inch bore. 2.87 inch stroke.
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.
4inch bore 3.25 stroke formula bore x bore times stroke times .7854= cid
3.498 bore with 4.25 stroke