This engine was a great runner. It was out of my 94. Made 206/444. That was before cam install. I only ran it for 3 weeks after cam install and an external reseal. Then oil consumption went crazy with lots of blowby
But those were not the low numbered cyls. The second pic was only at 275. The third pic was 325 last pic was 345With that crack, it's no wonder that you had excessive blowby.
Sure sorry to see damage like this. My thoughts are we "should" replace springs whenever any cam is replaced. Call it insurance or what you will. At the very least check the old springs for open and closed pressure.