Is building a stroked 318 better than a stroked 340/360?

Oh, save the money on getting another block. IMO, spending money on a 340 block to stroke when you have the 318 blocks in hand is kind of silly unless there is a specific reason you NEED the larger bore.

What is that 340 block cost nower days!

IF the 318 can go to a 4.00 bore size, the cheaper 360 pistons come into play here and a real nice little chunk of change in your pocket stays behind.

There is no argument that cubes rule the day. But just to have fun in a street car that doesn’t run in competition or see the high end of the rpm scale as often as a racing engine does?

4.00 X 4.00 = 402 cubes of fun.