Quote:
Originally Posted by 78maliburat
Stacked a bearing
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That was my first thought too,,, but the end result is,,, this thing is probably now a very large heavy paperweight. The production 400 blocks are thin wall castings to begin with,, pound the crap out of a bore like has obviously happened here (hammering the piston sideways at the bottom of the bore) and you have cylinder wall damage beyond what will clean up at +.040,,, which is really beyond serviceable in a 400,,, not to mention the rod is junk, you probably have a cracked crank, and as mentioned this all may have stemmed from a block with a cracked main web.
End of this story is,,, take it apart, take the block and crank to a COMPETANT machinist,, have it checked out.... and then check on the price of scrap iron.
I surely hope I'm wrong, but only one avenue to go down here....