79 Volare

Swapped intake/Carb, let it sit overnight.
Started engine and H2O pours out of several places. It also hydrastatically locked the engine. Found the manifold blots LOOSE (how the heck?)
Retorqued bolts, remove plugs, blow H2O out. Engine fires right up. Changed oil and filter, start again, now oil pan rear seal leaks like a sieve. H2O pump appears to leak as well. I have no luck at all!!!:hmph:
I don't have a way to get the car up enough to tackle the oil pan gaskets.:hmph:
Wish I knew where I went wrong..