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?

[technicalninja]

Run a compression test. If low add 1/2 oz of ATF/WD40/ither light oil. Retest.
Better? Spin till it stops pushing lubricant out plug holes and re-try.

Most of the time I do my initial start on carb spray/ether (I use B12).
It's harder to do with ITBs but a little 1/2 second squirt down each barrel should run for 10+ seconds.

If your comp test is way low check valve clearance before ripping it back apart.

You can help valve sealing with a leak down test and bonking the valves.
This works on used, nasty engines.
Shouldn't be necessary on fresh lapped valves.

The only thing that long term storage of a freshly rebuilt engine might effect is the valve springs that have been sitting "compressed". It should only be two of them on a 6 and I would bet BIG money that three years wouldn't hurt them at all.
30 years might...

This does mean clean dry storage. Humid conditions might trash one in three years.