Engine stalls.

Was going to take a short ride in the Valiant tonight to replace the oil in the gear box and put a new gasket in there as well at a DIY gas station/shop.
The engine was never started until last Sunday for the first time in a couple of years.
It started at the second try. Left it for idle a while just to make sure everything seemed to be OK.

Put the gear in Drive… and the problems... started…

After some 10 seconds the horns started to sound – not at all loud – every other second. Disconnected the wires to the horns and continued to drive.

Needed to turn right after a couple blocks, pulled the indicator upwards and the engine stalled. Started the engine again and made it for a couple of more blocks. The engine stalls once again and smoke is coming up from under the hood. Oil from the transmission filler tube seemed to have splashed over the right hand side header causing the smoke.

Noticed that oil temp sensor is bad and need to be replaced

Now I don´t know what to do. Please guide me in the right direction.

Short facts of the car
1967 Plymouth Valiant, auto on the column
318 from a 1985 Dodge Van
New harness throughout the whole car (factory equivalent from Year One).
Upgraded to 4 pin ballast resistor
New distributor (Summit´s own brand)
New battery
New fuel filter
New alternator, 46A (BBB Industries)
New mini starter (Hitachi Ministart 2,4 hp 4:1)
New coil and Ecu from FBO