Where or what is a good source to find a 351W block?
i don't mean junk yards, but if i do look for junk yards, just what model would i be looking at to snag a block from?
i figure this is a more reliable way to a big HP car with less fear of the Split

 

id shoot for one from a 93-96 f150/e150 etc there capable to run a roller cam from the factory

 

As new as possible. Or you could buy an aftermarket block from Summit or Jegs.