I just finished sonic testing a 428 CJ Block. The thinnest point I found was at the bottom of one cylinder at .138". That one spot about 3/4" from the very bottom on the Minor thrust side. Very small isolated spot then the numbers started going up. All other numbers were pretty stout. I'm assuming this block could safely go .060" over? Currently standard bore. If I remember all 8 Major thrust sides (thinnest measurements) were between .185" and .235". Did 8 points per cylinder. I was kind of surprised that the cylinders do seem to have a little bit of meat. At least on this one.
I have no plan on going .060" over.

I just finished sonic testing a 428 CJ Block. The thinnest point I found was at the bottom of one cylinder at .138". That one spot about 3/4" from the very bottom on the Minor thrust side. Very small isolated spot then the numbers started going up. All other numbers were pretty stout. I'm assuming this block could safely go .060" over? Currently standard bore. If I remember all 8 Major thrust sides (thinnest measurements) were between .185" and .235". Did 8 points per cylinder. I was kind of surprised that the cylinders do seem to have a little bit of meat. At least on this one.

That's what I thought. Wasn't sure if the Cammer came with the "Nascar" crank with the wider rod journals. Thanks

Something doesn't sound right. Somehow water got in the engine. For that much rust had to have been exposed to high humidity or water. I have bare blocks that have been in my garage for 25 plus years only very light rust on cylinder bores.

Where is the crack.   

This is the car that sold for 267k? The 66 R code?

OK, I might have been thinking about the 66 that just sold on BAT.
10/4 on everything, looks like a plug in the rear of the housing so probably correct, ignition?
I do believe the sidewinder is correct though for a 67 W code.