Found a 25526109 block in 1984-87 OLDS. It has not been rebored and it does'nt seem to have a lot of ring wear on it. It does not have the turbo crank. Only the mains are rolled and it has not been turned and it is clean. It also has the 109 heads 25518445. Thinking of pulling it for a spare. It seems these blocks are in demand and are getting hard to find. Especially one that is untouched. The down side is having to pay a machine shop to check it out to make sure the block, heads, and crank are rebuildable. Later,:biggrin: