Thats a good cam for the 318
The carb needs to be tune--even remove the air secondary door--least lighten the weights so it open quicker. A holley DP would be better for HP but I like how the carter/eddy carbs idle smoother with less tuning. You seem not so in to tuning so I say stay with the eddy carb--you could upgrade the the thunder carbs that have an easy to adjust air door for the secondary. Most likely its holding the power back right now
You gotta find out the gears, if its 2.73 it never be too quick no matter what cam. 3.23 are a good around gear and 3.91 will be better yet but yeah the little engine will rev on the freeways
3.91 gears and no air door on the secondaries and the accelerator pump tuned right, it be one quick little ride. Again a 750 holley DP would be better yet but more of a handful for U
