Quote: My only concern now is that my block is already machined, and I can't get it remachined...so I want to pour the stuff, but am worried about the best way to do so without moving the block i.e. torque the mains down I know, but do I need to put a head on afterwards and torque it so the cylinder doesn't shift, or???
Don't fill it, you will be sorry Do you have access to a dial bore gauge that you can check your cylinder walls before and after from the bottom with both heads torque down before and after filling? If you do you should check it and let us know your results I'll bet that you see a .003 or more change in the straightness of the cylinder walls, espcially the center cylinders I sincerely hope you don't see that happen to your motor
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
Do you have access to a dial bore gauge that you can check your cylinder walls before and after from the bottom with both heads torque down before and after filling? If you do you should check it and let us know your results 
I'll bet that you see a .003 or more change in the straightness of the cylinder walls, espcially the center cylinders 
