It's crazy you had to prove it's a 318 like it's impossible to make power with anything less than 340/360 guess that's the line where physics stops working. Sucks she let go on you, doing another 318 or moving on to something else?
As has been pointed out numerous times, buy different members, that wasnt a "318" it was a 318 block bored to paper thin walls, with a 4" stroke crank. Ran good till it split a cylinder wall open and hydraulic broke in spectacular fashion.