need vac info on carb 2 barrel - 305v8 - old motor

[will1384]

Ok I got a used truck from a friend
its a 1985 chevy truck 2wd long wb

he had a friend put in a rebuilt
305v8 in it its from a old car I
think - Maybe late 70s - I dont know

It had a 4 barrel that used a crap
load of gas, it got only about 12mpg

Some one else I knew had a truck just
like mine 305v8 he got 18-20mpg using
a 2 barrel carb

So I got a 2 barrel, got a adapter plate
to mount it - The plate did not work-
so had to make my own - three hours of
metal work later - got it mounted - it
runs ok but what about the vacuum lines ?

There were not any vacuum lines on the
truck when I got it - Except for the
transmission and Heating-AC control
and they were going to the manifold
vacuum source

The motor seams to run just fine with all
vacuum lines pluged - is that normal

right now I got the choke, transmission
going manifold vacuum source

And the Distributor, Heating-AC control
to a constant vacuum source on the carb

Also its got a Electronic Spark Timing
Distributor - With a place for a vacuum
line - Do I have it in the right place ?

And just about every emmision device
is gone - not that I care