Finally got the intake manifold off the 283. One of those 20 minute jobs that took far longer - had 2 bolts rounded off and hard to get at.
Can already see the next "fun" - tried a couple lifters, and they don't want to come out of the bores. Not sure yet how bad the bottoms are mushroomed over. The truck itself has either 247,000 or 347,000 on it and I have no idea what work, if any, the engine has had over the years.
But that's what makes it fun!