Something about the question, or this discussion strikes me as strange.
In the last couple of years I've screwed together a few motors and talked with a couple of crank grinders. The guys I talked to use the terms "high side" and "low side" to describe the finished diameter of the crank journal. A crank that is ground on the "high side" will have slightly larger journals than one ground on the "low side" and thus the resulting clearances between journal and bearing will be smaller. A "low side" crank may give you as much as .003 - .004" clearance, while a high side crank might only have .001 - .0015"
As for offset grinding a crank to change the stroke, well, a crank is a crank when it comes to that. It can be done on any crank. But keep in mind that you can only change the stroke by the same amount that you are taking off the journal, and this will only change the deck height by 1/2 the amount taken off the journal.
To clarify what I'm saying for those who may not follow - if the journal on your crank is in fine shape (doesn't really need to be ground), then it would be possible to increase the stroke by .010" by offset grinding the journal such that .010" is taken off the inboard side of the journal (the side closest to the crank centerline) and no material is removed from the outboard surface of the journal. This has the effect of moving the centerline of that journal .005" out from the centerline of the crank and will put the piston that much higher up in the hole at TDC.
If the surface of the crank is bad and it needs to be turned at least .010" all the way around to clean up, then you'd have to take off at least .020" to achieve the .010" stroke increase and the .005" higher piston height.
This is an interesting approach to zero decking a block, I've never thought of doing it this way. There is no reason it can't be done. The displacement increase will be minimal and won't have a significant effect on power output (you're talking about changing a 400 from 3.75" stroke to a maximum of 3.79" using .040" bearings if they're available on a good crank). The compression increase could be worthwhile if the pistons are already sitting down in the hole a ways. I would not want to end up with the pistons protruding more than about .005" from the deck surface in any case.
The real question in my mind, is which way is cheaper to attain zero deck? Offset grinding the crank or simply decking the block.
