The crankcase halves are being held together by (I think) 2 pins and by anerobic sealer which was applied to the block halves upon assembly. If you don't put that crowbar down, I can't help you save that engine. Use a piece of hardwood or anything less dense than aluminum. Steel is more dense than aluminum. The two pieces you pried from the top and bottom of the crankcase will fall out upon separation of the two halves of the block, therefore prying is not a good thing.
Look down both sides of the crankcase for a recess designed to insert a pry tool for the purpose of TWISTING it to break the seal and separate the halves. Don't hammer a screwdriver between the halves. You can use said piece of hardwood and hammer, or a dead blow hammer to gently tap apart the halves. You have to break the seal of the anerobic. "glue" and the the halves come apart easily.