Vacuum connections

[Wyomingite]

Looking for some help on what the two ports are for with question marks in this picture. Mine currently has them both capped off. Along with the one marked “emissions” That is also capped off. Would that go to the emissions can on the radiator support?
Also, I’m hearing it’s best to run the distributor to the manifold vac. On drivers side and the TCC switch to the ported vac on the passenger side.


Sent from my iPhone using Tapatalk

[Irish_Alley]

depending on what your truck has set up but my mud truck with no emissions i have brake booster  which should be manifold vacuum, pvc which should be manifold vacuum and distributor which again should the one marked "cap" manifold vacuum (for best performance, if you want better emissions you have it to ported)

but your trans should be hooked up to manifold vacuum also. im not sure about your carb but if you have the engine running put your finger over the port and see if theres vacuum

[Wyomingite]

Yeah all emissions equipment is removed.
So just the basic items.
I’ve read conflicting stories of weather to use ported or manifold vacuum for the tcc switch. With manifold vacuum, wouldn’t it be trying to lock the converter at idle?


Sent from my iPhone using Tapatalk

[Irish_Alley]

what trans do you have?

[Wyomingite]

Trans is a 700R4


Sent from my iPhone using Tapatalk