Thanks jgalt_53-235 you've been a great help already!
my truck is a 1948 3/4 tonne 3600 thriftmaster.
I dont know if that changes anything.
to set the vacuum advance i just hook up a vacuum guage to the vacuum advance tube coming from the carb then adjust the set screw on the carb untill it has the most vac. possable right?
thanks a million
Tom
