Pacific Northwest Dyno is a great dyno facility closer to you in Sammamish, Washington near Issaquah.
http://rpmdyno.com/dyno.html
This is the same dyno used by many Stock, Super Stock and Comp Eliminator guys in the Seattle area. Ask for Rick.
If you need help tuning the Quadrajet, there are lots of racers that run Quadrajet's in the area that would not hesitate helping.