Main bearing cap removal

This is the last thing I need to do to be done tearing down my engine, but I can't get any of the bolts on these things to move. My impact wrench isn't budging it at all. Is there another tool I can use to get these things off. I really want to get this done today so I can get the block to the machine shop this week. Thank for the help. I know you guys won't let me down.

 

I was afraid that was what it would take. I guess I'm off to buy more tools.

 

hit the top of the bolt with a BFH. sometimes the shock downward will break it. another thing is to drag it from your truck for 200 miles. prolly wont do anything good to the block, but will releave some stress..
0=)

 

Thanks I think I'll hold off on dragging it around my neighborhood besides I think the sparks would draw to much attention. Can you tell me if I need this rear main bearing removal tool W-323. Or something I can use in place of it. I should have looked ahead so I could ask them both together. The first three were removed fairly easily with the breaker bar. Thanks