I'm in the process of acquiring a 1946 Chevrolet Truck from a friend of mine that has been kept in a shed... no rust, very few dents, all panels and trim and glass have been kept in dry storage, original motor and transmission. I'd like to keep it fairly original and would have no problem rebuilding the 216 that's currently in it, however, I know most people upgrade these trucks to the later 235 that has the fully pressurized oiling system. I do plan on driving this truck and would like the peace of mind of a more reliable motor, but that would require me to find and buy another motor.... Now here's the curveball... I've always wanted a classic car with a big block V8, this truck just happened to land in my lap and I was more than excited to restore it when my friend told me it was for sale... I recently came across a 1967 Oldsmobile 425 big block V8 for sale in my area for $600, however, there is an unknown issue in the bottom end. Seller's ad reads, " it needs some work. Something broke in the bottom end of the engine. I don’t know what but there is metal in the oil. It does turn over." I'm half temped to buy this motor with the idea of rebuilding it and putting it into this old truck. I'm not experienced enough with these old trucks to know how much work would have to go into getting this V8 into it, plus I would have to find another transmission. So, I'm asking those with far more knowledge than myself, will the 216 be reliable enough after a rebuild (bearings, rings, gaskets)? Should I try to find a 235? Or would the 425 be worth the extra effort?