1979 3+3 GMC Dually

[Willowrun]

Originally Posted by Puglia10

Hey everyone. I was on here a while back with a 1980 c10, but the project was too big for me while I was in school and working.
Finally picked up a truck I’ve been trying to find for a long time. It’s a 1979 crew cab dually. It’s rust free from California (I’m in MA, everything is rusty) and it seems to be all or mostly original and unmolested.

I don't think I saw it mentioned, and from what I see of your engine pic it looks to be a big block, but could you confirm what your truck has for a motor?