umm.. no it doesn't go to timing anything ;)

the y would have been used as a joiner to go inbetween two vacuum lines

excuse my extremely terrible drawing ability but you get the idea lol

Ok but were would the split line run to?

theres only one main vacuum port on the 7m intake manifold

and as per my crappy drawing that would be on the back lol (closest to the firewall)

I'm sorry did I forget to say it was for 1985 5MGE

Ok!! After some serious deliberation i have come to this decision..The 85 5MGE has only one major manifold vacume port also as the 7M..The diference is ours is on the front..The port on the front has a rubber line that is only about 2-3" long..Then it goes into a hard line that goes under the intake to the back of the motor..This hard line consists of 2-3 lines in one housing..The other lines run to a few misc. sensors that i have removed along with the EGR and other emission peices..This then goes into another rubber line that is only 2-3" long and stops at the FPR..So i figure that you will be able to either splice in at the front or the rear line to get the vacume you need ..I myself have not had to deal with these kinds of electonics as of yet but i have been doing alot of homework for the possible road ahead..I hope this helps.. Good luck and keep us posted