more power (help)

We are trying to help but we are not mind readers. Is your timing at 10,8,6 BTDC? I put my timing tape on backwards lol and couldn't figure why my car ran like *** until someone ( Here ) pointed it out :BangHead: and I'd like to think I know what I'm doing. You said vacuum is good but did not elaborate if you used a gauge while setting carbs. or what is good? 15,18,20 ? You can add a pic of what your plugs look like and what # and not from the outside either. Don't say plugs are good. Usually when I get hung up on something it's because I assume good and go on looking elsewhere. If I were you, I would step back. Write a better detail description of all that is (good) with why and how you know that. Do't be afraid to add pics as well. I never would have fixed my issue if I did not add a pic. Need tire size and what rear gear? That pick truck in video probably has 4:12 ratio or better. JMO
Good luck!