The short answer would seem to be probably.

However, I'm not very knowledgeable about as400 architecture so I thought I would post some of what I've found about this particular system and pose the question: Is it possible to install linux on this puppy, or should I just scrap it. If yes then which distro?

Its an eSeries (which means squat I've found) 9404-600 with a 2129-000 System Processor. (I think this means it has CISC processor architecture, but I've been inconclusive so far.)

Well, I'd like to know what you all think. Any resources for AS/400 processor architectures would be appreciated. (I've google a bit, and have only been able to find "Model 600" which again means squat to me.)