apparantly a certain mr rouse said they preferred using the oldest 205 blocks they could find as they seemed less prone to cracking than new 500 blocks, it wasn't until later that they used the 500 block.....once they had put some serious miles on them and heat cycled them many times

but if i was going to use a 205 block (which i do) then i would check across the block to head face for cracks(they usually go around the head bolt holes), then i would shine a torch down the waterways looking for heavy corrosion on the outside of the liners...the cleaner the better


Pugo