I am in the process of rebuilding my '55 Chevy 235, I had it completely machined and put in all new parts. The engine is still on the stand with the fly wheel, head, and oil pan off. When I go to turn the engine over by hand I can't and I have to use a big wrench as a pry bar with a couple of bolts. What I am wondering is if this is normal since every thing is new or if I should be able to turn it over easier?