Totally Dissapointed!!!!!

Really, before the shop gets bashed or blamed, you need to determine what's really wrong. I would suggest warming it up, pulling the plugs. Keep them in order, and look at them closely. Are they oily? Look wet? Is it one or more than one? Do a compression test. Write down readings for all cylinders. I fat all possible, pay a shop for a leakdown test if you cant do one yourself. Docmunet everything they find. Pull the valve cover with the PCV in it. Holley isnt that good...lol. If the valve cover doesnt have a baffle, put one in. Pull the carb off. It's only 4 bolts, a few linkage connections, and the fuel line...Peak down the ports. Use a small mirror on a telescopong shaft. (Parts stores have them) Is there any oil visible? One of those things will tell you waht is not right. Smoking could be a result of running that double pumper on a 318. It's too much fuel unless it's tuned right. It's very possible the rings are washed out. But the compression and leakdown will show if that is true. If the plugs are nasty, put in a new set, and see after a few miles of driving what they look like. Also, check your ignition. If it was weak, that can also lead to smoking. If it's the shop's fault, then you throw it back at them. If it was a result of your installation and breakin, then it's really not thier problem. (I just spent $600 of my own money, plus time to fix a smoking issue that wasnt my problem, so I cna empathize with both sides here...lol)