unless the BBC needs a complete rebuild, I would just go boating.
when it does, look into the 6.3 aluminum heat exchanged LS / LT variants out there. 430+ hp and 400# less weight than the BBC, (200# less than the iron SBC)
or build a 550hp BBC
the aluminum is fastened with stainless hardware. the only thing that would be worse from a galvanic standpoint is if there was a copper washer bolted between.
check with a piece of fishing line.
usually with compressed air, you cant tell where its going or if its partially blocked.
another trick I use is a can of WD-40 and making sure the oil comes out the correct passage. however that doesnt ensure the passage is fully clear.
that is near the bottom of your hull.
keep digging and removing boat bits until you get there.
the areas circled in green need to be removed to get to the inside of the hull
