Please help id this engine code
I have a 1971 chevelle with matching vin and fisher tag, but I'm pretty sure the engine was replaced. I have no idea what's it is, nor what's inside. I followed the directions on here and after removing some paint, I was able to fing the engine id on the front passenger side of the block.
Any ideas what this is? No spaces. Nothing else.
This is my first classic car. It was given to me by my father. I'm getting kind of excited about it but want to know what I'm starting with before taking it to a performance shop for some updating. If this engine is crap I may just head on to a CE.