[Bruce Edwards]

If you are running a built up 351W and the 770 is a vac second use it. I install 750 Holley's on all the 351's I build and have never had an over carb problem.
If you are running double pump carbs I would sell them off and get a vac second. Vac seconds are much better for the street and D.P.'s are better for the track.
Again just my view on the subject.