Has anyone successfully bored a 318 to 4.04?

I have been wondering about this too. I have a set of 4 inch flat top pistons for a 360 that I want to use in a 318 to duplicate HotrodDaves super duper mpg 318 build. Would it be safe In a Daily driver or would the 9.5:1 compression crack a cylinder?

you would have to sonic check the block to be sure 4 inch bore is possible. Are you going to use the 360 crank? You will have to, as the pistons you talk about are for a 3.58 stroke. There is MORE costly machine work......