After pulling the engine, I looked at the codes. Turns out the block is a 1974 350, not a 1973 400. After a search, found a 1974 455 longblock and brought it home. Taken apart, we see that the block is pretty good, so it is being sent off for cleaning, then boring .030 over.
Because the Edelbrock 72cc heads will create over 11.5 compression, we are going for dished pistons as well.
While this turned into another roadbump, this will turn out to be something much better in the end.
