Not to nit pick I got 301.59 lol
funny thing I notice with 4 inch bores is if you take any stroke like 2.87" 3.00" 3.25" 3.48" 3.58" 4.00" etc.. if you drop the decimal point and add 2 to it you get the displacement 289 302 327 350 360 402 etc..
To the OP is that a 340 or 360 block ?