What is the correct procedure to replace the intake manafold and heads on a ZZ4 Chevy 350?

Same as a standard small block , just do every thing carefully and use good intake manifold gaskets or you,ll get a vacuum leak. Just follow a manual carefully, it's not hard to do ,make sure everythings clean and done correctly. Invest in A Chilton, or haynes manual which you can pic-up at any parts store) auto zone, O'rilleys, ect) Then it will be a snap. Basicly you will take off your carb & Distributor when changing your Intake mannifold. The heads well I havent done those yet but I dont think much eles has to be removed now you may want to take some other parts off but that would be just to make life easier. For example I had to jack my engine up when replacing the oil pan and I removed the fuel pump to make it easier on myself. Granted I had to replace the fuel pump gaskets but it was worth it to me.