Up for sale here is a block I have been saving for a long time. I had a 69 z28 with the dz302 and this block was built the same week and has the exact same casting numbers so I kept this one as a spare. I no longer need it so I am offering it up for sale. It is .030 over and  appears that it should clean up at .040. It has the nodular  main caps and is a good old strong block. It was a running engine with no issues when disassembled. This can be bored and decked and stamped for a dz302 spare motor. Run this one and keep your original safe. This has no cracks or sleeves or damaged threads. Thanks for looking.dated j 26 8