Originally Posted by hammertime
I have old school thinking, if it doesnt need to be bored why do it.
One of my favorite combos is a 4.25 stroke with a 4.530 bore making a 548, or you could gi 4.375x.453 and make a 564 out of it. The stroke does help. I've seen both these combos work well. I also think using a longer rod instead of a shorter rod may help a little.
X2. A 548 is a simple and cheap big cube build. I had one and loved it. And it gives you plenty of rebuild room for years to come.