I have a 351w that had a 2 barrel carb and i rebuilt it and put on a holley 600cfm 4 barrel with aluminum intake... will i need to connect all of the vacuum hoses that were on the 2 barrel one

 

yes

 

I only have one vacume line going to my holly. thats the one going to the distrinutor

see the little tube coming out next to the frontfloat bowl? that one. It goes to the distributor. Its the vacume abvance. But my car is not smogable.

 

yea prob

 

You'll need the dizzy vacuum and the PCV (likely attached, but may have been attached to a spacer under the carb). If you have other vacuum lines, trace them and let us know where they go. If you have power brakes, you'll want to reconnect that one to the manifold, too.