Adding 22 cubes,,, power increase? 528 to 550

Duane said
How much clearance are we talking here. The trend with Pistons nowadays already is tighter than say 20 years ago. I bought new custom Ross Pistons uncoated and they recommend .004 clearance.
Can you put a number on it?

IIRC, it's near zero running clearance. I'm going to call them again next week and verify that, but that's what I remember.

Edit: by near zero I mean .001 or a bit less IIRC.