Help !!! New engine will not start ?

Got the 340 in my Cuda together last night .

When we tried to fire it all it did was crank and spit a little ?

Firsrt I had a pert tonic coil on the coil was hot to the touch .

Tried the stock coil I had on the car prior .

Checked timing 3 times ? It is right on and has 32 degrees total advance .

One thing that seems odd is when you turn the key off it seems to want to start , it spits and has more of a starting sound ?

Has anyone ever had this problem ?

Any ideas on what to try ?