Originally posted by brianrupnow
Sometimes I have an amazing capacity to confuse even myself. Thank you for the answers. I will plug the port which vents to the now non existant charcoal canister.. I have done this before with a quadrajet, but it was about 10 years ago and I couldn't remember. There seems to be a whole whack of vacuum ports, both large and small. I plug the small ones with the shank of a wooden match dipped in 2-part epoxy, then pushed into place. It gives a permanent seal, however if you ever do have to open the ports, they are easily drilled out with a small drill bit in the electric drill. For the larger ports I use a peice of wooden pencil dipped in epoxy. This probably sounds crude as Hell, but the roadster I built in 1996 had the same style carburator, plugged the same way, and it ran great. I plan on using the large vacuum port at the rear side of the carb, at the bottom, to run my distributor vacuum advance---is that a good choice? I can't remember what port I used last time. As far as the choke goes, I know that the choke plate on the small bore side of the carb should normally be operated by a bi-metallic spring, but in this case has been modified to be operated by a pull cable. I just couldn't figure out what actuated the choke plate on the large bore side, and I thought maybe there was some external linkage removed. When you buy a used vehicle you are never really sure what may have been done to it by a previous owner.
brianrupnow there is no rod that opens the top back big betterflys. air opens it up. there is a small spring around the top shaft that you can adj. it to make the seconderys open sooner or make it later depending how much secondery carb you wont.