Yes 440ci from a stock block but that's where it ends. Special crank, rods and piston's. I haven't built one to 440ci but I am in the middle building one 393ci. Eagle crank 351w rods and 302 pistons with .030 overbore. Check out eagle specialty products, I think it's eaglerod.com As for the clevor engine the Cleveland heads bolt right on the windsor block but you have to drill water passages into the head,some where around here I have the instructions for that. Also requires a special intake made by B&A (i don't think anyone else made the intake) and at one time there was special spacers around that would let you adapt a windsor intake but the B&A intake was much better.