wondering if there is any good easy to read block decoding web sites to see exactly what i bought

 

Sorry to have missed your question. Just post the info here and someone will help you out.

 

Hello, I'm down in Medford Oregon and if you don't get a reply here send me your email address through a pm. I trust the Oldsmobile guys here, but you never know when someone is trolling for addresses to spam. John

 

On a slight tangent......Would a 72 block be leaded gas or unleaded? I wasn't alive in 72 so I wouldn't remember.

 

All GM engines built in 1971 and later have hardened valve seats and lower compression for low and no-lead gas.