Tell me this noise isn't what I'm afraid it is.

[Kube]

Originally Posted by bobH

Another thing to add to Kube's 'list'... I've never found in all of Craig's posts that the engine was ever balanced. I can't imagine, the way he drives it, WHY? Especially when it's considered that the crank came from one source, the rods source not mentioned, and the pistons changed at least twice. Maybe I missed this detail?? JMHO
(AND, I'm sure price is not an issue. I recently had a 59 engine balanced, and cost was insignificant, compared to the overall engine cost.) Again, JMHO

Balancing should at the very least be checked to see if it is necessary. Ford did a pretty darn good job on these engines when they were first assembled. the problem is most engines have had at least some work done on them since "day #1".
If I understand henry's post correctly, one cylinder was sleeved and the remaining seven were bored. Anyone that has good experience building engines knows this is a big no-no.