Level Engine?

I just installed my 360 into my 70 dart. The car and K-member were a /6, i purchased the conversion kit and the engine set in well. Now just for fun i put a 2ft level on the carb mount and the engine is level side to side but not front to back. It leans back...This normal? It has been about 10 years since my last build so my memory is a tad fuzzy. Thanks for the help in advance.