454cid
Sooper Pooper
I think gmt400 still has appeal of the"vintage truck" like squarebody, 70s rams etc. because it's simple and "square". Big wheels, KCs and bars don't look out of place on them. 800 lost it with all those curves. It's a purely subjective view.
I don't get it when people refer to the GMT-400 as "square". There's nothing square about it.