[blykins]

Bell must be dialed in. No question about it. If I don't do it here, I put it in the build sheet that the bellhousing has to be checked.

There are too many manufacturing tolerances between blocks, cranks, bells, and transmissions.

If you're going to do it your way, then you need to weld washers to the bellhousing so that's there's no slop after you get it positioned where you want it. Things move around a lot and I wouldn't want to rely on clamping force to keep the bell from squirming.

A good way to get the bell dowels out of the block is to weld a nut on the end of them, then use a slide hammer to pull them out.