Just finished rebuilding a small block chevy in our '86 iroc camaro. I think I installed the distributor correctly, but is it possible I installed it 180 dgrees off? It's been many years since I've done this and while I managed to get the engine to sort of run, it's back firing like crazy-a lot of flames shooting out from the headers, and I have to keep pumping the gas pedal and then shuts down. I smell gas in the oil, which tells me I'm not getting full combustion. I forget...Does the crank turn two revolutions to complete one 4 stroke cycle? I'm thinking that perhaps I installed the distributor TDC while in the wrong stroke.