Indy EZ, talks the talk, walks the walk.

I did use these same EZ heads on Project 505 but the block is different. Project 505 was a stock block which we eventually broke so I switched to a World block. The 514 motor has a 4.440 bore size and a 4.15 crank.

You shouldn't have any trouble making more than 800 hp with EZ-325 heads on a 540 shortblock. Just need to give it some camshaft and let it eat. Of course, if it is a street engine then you need to stay on the small side with the cam.