See here first: https://v8buick.com/index.php?threads/power-timing-your-buick-v8.63475/ Follow this and get your engine running its best. Then lets see what it needs to get more power. What carb does it have - pics will help. The distributor is an HEI so it could have smog specs and may need to be modified. That will make a big difference. Any history on the engine? Have you done a compression test?
Bob, that's a 1972 or later intake. The A.I.R. passageways and idle control solenoid are a dead give away.
You are absolutely right wizard. The motor came out of a 72 Buick Riviera. "12lives" its a qudrajet carb. I have not done a compression test yet. No info on the engine
Welcome! and a sweet car and wife! I see the seller liked the color red Please post more pics inside and out..