Rebuilding my 700hp 408

Yes i did. Use the block fill before you have it machined because this will make it out of round. Once you do both sides then have it bored and honed with a torque plate. I used water to find the right amount of block fill to use for each side. Once you drain the water use a little over the counter alcohol to displace the water, then blow it out with an air gun. Each side will be different amounts of block fill. Its alot of work but it makes the block much stronger. Better than buying an R block. I have used this block for over ten years with many 7,500 rpm passes.

Thanks for the reply. I already picked up some hard block. How high did you go? I was told just past the freeze plugs. My local machinist doesn't have a torque plate for a SBM, so I bought a new in the box BHJ plate off of an Ebay auction. Once the weather warms up, I'll get that sucker hard blocked and off to the machinist. Thanks.:)