ok this might sound stupid but, I reciently bought a 350 that came from NC today, and I need to know where to connect the vaccum modulator to, does it go to the same vaccum lines I got my power brakes hooked in to or what. I swapped out the 700r4 and the 305 TPI, for a warmed up 500 hp smallblock and soon to be a 350 tranny w/4000 stall

 

It must go to true vacuum, on the back of the intake manifold preferably.