We had trouble with the machining on the Indy block. It was pretty bad. Cylinders were .011 out of round and had .01 taper. Sleeves are thin too. Not to mention #5 cam bearing bore was way over sized and hemoraging oil on one side.

We have had pretty good luck on the World Cast Iron blocks as long as they don't drill the head deck holes into the water jackets. I hate that and there is no need to do that. Buddy of mine with the aluminum version is having trouble after two years with it in his car. Sleeve moved up and is letting water in....Doesn't sound like a cheap fix.

Wanted a KB, called many times with money in hand, and they never have a block. Called Bulldog and he had some coming, almost bought one until I talked with Barton....

So we built a stock block with concrete in it and a girdle, and we will rotate the world with that one....I do want another aftermarket block, but...I have trust issues.