drag racing induction sys

The carb is too small for a maximum effort , but should certainly get that car into the low 12's.
Take a peek at which stock eliminator cars are restricted to an 830 cfm carb and where they E.T.
Apples to bananas comparison , but it makes the point.
You have other problems.
If you have a tiny air cleaner , I would take that off for a pass and see what you think.
I bet you have a surprise coming.