Hello there, I would say that they are a reliable engine. I own the 66 Delta my father bought brand new and the turbo 400 and the 425 served him very well. In fact (and I swear this to be an absolute fact) he ran the 425 until 1982 then engine had turned over the odometer more than a few times, and when we were on a family trip #4 hit BDC it literally fell through the paper thin cylinder wall. My dad was an industrial mechanic and knew how to baby things. Anyway enough about family history, That engine if it is a four barrel would have to be producing around 340 hp. I will check my GM books to try and give you an exact # . One thing however as a downfall, if you are going to rev the hell out of this thing you will suck the oil pan dry and that ain't a good thing. These are steel crank, Large bore, short stoke engines that produce a shit load of torque. The trick is to keep oil in the oil pan and let them breath. I really like 425's so I may be a little bias but the fact id Toro engine or not (cam angle) these engines perform very well and if some thought is given you shouldn't be dissapointed with anything except how much lighter your wallet is because you didn't build something that is a helluva lot more common. (smallblock chevy) Sorry for talking your ear off but I love these damn OLDSMOBILES!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
|