Happy to be back on here with an update. I have been down with a nasty case of COVID for nearly a month. Just getting back into the swing of things. Way back in early October, Paul K asked me to sonic test the block. Since I took so long, I decided to map the entire block which I did yesterday. The results will be posted below. As Paul stated then, the cylinder walls are not as thick as ideal in some places. Certainly nothing like an IA, IA II or KRE aftermarket block. I don't have a basis for comparison to a regular 455 stock block. It's safe to say boring the block for a set of 8 , 1/8" sleeves would not gain you anything. I wouldn't do it unless to save a cracked OE bore. The bottom of the bores appear to be very well supported and thick. Next on tap is to install new cam bearings and begin the assembly process. I plan to weigh this block in the next week and a regular 73, 455 block I have sitting around here for a weight difference, if any. Stay tuned.
I see the sonic test will not post directly. Will have to post as a jpeg.
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