When I bought this El Camino, it was sold to me as SS396, which is still hanging in there that is it a real or just a copycat. Everything points to that direction, albeit someone can go lengthy way to make it a "real SS", but I like to keep it hanging out there, since it is much better to have a "real" than actual real, because then I have to do whole restoration thing.
But the thing is that I haven't checked the stamp on the engine block until now, and it tells us that this isn't the original engine.
What the stamping tells us is that this engine was made in Tonawanda plant, August 30th, and engine code is CXA, which translates to 1974 454, 235 hp and TH.
So, I got 58 cubic inches more than I bought for, although it has only 235 SAE horses, as it was built after the big horsepower era was over, due oil crisis and insurance policies in the USA.