Need help getting my truck to run

[Plunkett]

I've got an 86 chevy silverado with a 305 on it. Yesterday I removed all of the emissions vacuum lines and everything off the engine. I hooked the vacuum advance, tip in switch(not really sure what this is for), pcv valve, converter lockup, and the power brakes vacuum lines are now hooked up to the carb. I forgot to block off the vacuum port on the front of the intake manifold and when I went to drive the truck is spits and sputters unless you have it in the higher rpms. Well I came home this morning and capped off the vacuum port on the f ront of the motor and it still wants to idle like crap and doesn't wanna run right. This is my daily driver, so please help me figure this thing out fast.