Well I spent a little time today investigating what the doubters have been saying about calibration's and testing of blocks that seem too good to be true, and what I found in the limited area that I was able to physically check my self and found that on the two cylanders at the rear of the block (#7-#8) mechanically checked out to be the same as what the paperwork said it was,, driverside, the paper said .290 and was real close to what my machinist's scale said it was and #7 had the same results,,so I have convinced myself that his calibration was correct and I have two good blocks to work with.

You are truly blest My brother I sent my best 400 block (out of the three I have)to the machine shop and it ended up having a pitting issue in one cylinder that the shop decided to put a sleeve in it without asking me before hand and then proceeded to braze and weld up two places on the deck without informing me of the damage which ended up requiring another sleeve in that block on the other side Maybe it is time for me to make a machine shop change

I have convinced myself that his calibration was correct and I have two good blocks to work with. [/quote]

Bill, maybe you should buy the lottery ticket! Oh, and don't forget to share when you win............https://board.moparts.org/ubbthreads/images/icons/default/laugh.gif

one requirement when I have any machine work done is "Here is my home and cell numbers, call me if there is ANY questions or concern's",,,recently I had to change machine shop's because the guy that has done my work finally retired after 35 years and I did a lot of digging and Doug's name kept coming up, so I went for a visit and was pretty impressed with what I heard and seen in his shop, I observed a lot of higher end stuff right along with the standard bracket build's, I have heard a lot of good about him so I am giving him a try and keeping my eyes and ears open and watching how he operates, I like what I have seen so far.
John, my father said once that a blind squirrel will find a nut once in a while, as far as a lottery ticket, well I do have to go and put gas in the truck here in a little while,,,,

Yea Been there done that. I told Bill before hand that what he would get. I think take .100 off them numbers would be closer.

Even if I did reduce the numbers by .100 both block's are good ones.

I think everything has been covered as far as the testing and if it was done correctly then you should have a great block.If you went over all the information with your machinist and are satisfied then get started on the build.
The only thing I question is not to use a short fill since your spending a lot of money on the block.The big issue we see is always on the tall fill and block not being clean inside and the cement not sealing against the block and cylinder walls or blocking water passages.But it's your decision as to what gets done.
Good luck with your build,and look forward to seeing you at the track.

What's the build plan for the block?
I like a little hard block in my stuff but I run my stuff hard.

I agree bill I do think the blocks will be fine. Heck I use one. It is in my car LOL It just the odds of me and you owning 4 blocks that check that good. Is pretty rare. I know guys with aftermarket blocks that say they are not that good. And I will add One of the block I got. Been check by two diff shops. Got me? I Quit worrying about it.