Fresh 2.7, doesn't want to wake up Options

[930cabman]

My /6 conversion is going on 3 years as it seems as many do. I had a local old school reputable shop build the stock 2.7, case was done at Ollies, .... should be a great engine. Finally trying to get her barking, but just won't take hold. While cranking she wants to start, but when I release the starter, she conks out. We have a spark (not real significant), timing is close, carbs appear ok.

Is it possible the valves or maybe rings are not sealing because the engine sat for about 2 years?