Big Block seems to slow

So the issue is stock cam(if not stock not much bigger) big intake and big carb. Probably going to go down to a 600cfm from the 750 that’s on it and see if that helps more. But at this point I’m
Just glad I got it to where it actually runs decent.
It's not being hurt by the 750 if it's working correctly. You can try a different intake and smaller cam. Or, more converter and gears. Either way. I think 14.4 is a great baseline with a lot of opportunity.