Chevy 400 block .030 bore size.  Block only has about 12- 15 races on it however I had to have one of the holes sleeved when I built it but it was not done correctly  Noticed the sleeve slipped a bit when I was going to freshen it.  My new shop builder says it can be re-sleeved no problem, but I don't need another motor at this point.  The caps have been machine for straps that give the mains extra stability.  

$125 OBO

Thanks.