engine chuggin

I am still thinking the intake is way to big/tall and using up all of your Vacuum on your 318, My brother had a 318 in his truck he bought that had a tall high rise intake on it
and it ran and started but never could get moving very good, I talked him into changing it to a stock steal 4 Barrel intake and he was suprised how well it ran and easy starting.
Before we changed the intake he could not pull out in traffic well, after the swap he could roast the tires and get up to speed 4 times faster. To much intake JMO.