Larry,
Funny enough, you just reminded me, I think I had a 250 in a 1980 Chevy Van. I bought one new when I was young, it was advertised in the L.A. Times, by a place in Long Beach. It had a 3 on the tree, and I know it was a 6 cylinder, but I think it was a 4.1L or something, and that might align with a 250. It had the big engine cover between the front of the driver and passenger seats. That was before <cough> Mini-Vans.
I never worked on it at all, but put close to 100k on it, and sold it to my partner. Never had to do anything major to it. That was a great van, I hauled so much stuff in that, as did my partner after I sold it.
