That is a YE code 325 hp 4-barrel 10.5:1 compression 389 with #76 heads from a big Pontiac equipped with a TH400 automatic.
Not particularly valuable because it’s not a GTO 389.
The 389s really aren’t sought after unless they’re from a GTO, and even then it’s the manual transmission engines and especially the Tri-Power engines that people are looking for.
Maybe $500 because it’s a good running engine, but a leaker as the majority of older 389s are.
If it were mine and I had the room I’d keep it as a good running spare just in case.
