I have 200 it runs fine at idle I can rev it with no problem, but when I put it in gear and give it gas it kills its self. I'v already replaced everything I can thank of new carb, coil, cap and rotor, plugs and wires check all vacum ports thanks in advance
Sounds like your choke is staying on. Warm up the car for a few minutes and verify that the choke plate is fully open. If not, then look for the wire that (should be) connected to your choke housing and verify it has 12V while the car is running/ign on. That's where i would start looking, anyway.
Even though your carb is new, check your accelerator pump for a good solid stream especially when the throttle is opened slowly! Many times a carb in storage will get a bit of corrosion in those small ports. Sometimes the pump may appear to work fine with a quick throttle application, but it must work with a slow application as well. The good thing about a new carb is that you can usually get it apart without breaking any gaskets, if you need to. If no stream at all, a bread twist tie wire can be inserted into the pump jet with a little patience. Sometimes that's all that's needed! Those jets have a very small orifice.
Like " Paul " suggested, is the choke opening up? If it is open follow my steps. If it is not, make sure it is getting power to it and it may take a few minutes to open from a cold start. I say accelerator pump issues simply because the pump system on both the YF series and the RBS series Carter carbs leaves a lot to be desired! Brain fart! Is your choke heated by a tube from the exhaust manifold, or is it electric?
I would have thought a 77 would have had an electric choke. If the tube becomes blocked, or the insulation falls off, the choke 'clockspring' will not stay warm enough to open the choke. If sealant was used to make the connection at the manifold, I would suspect it has plugged the tube. The bottom hole in the manifold (where the air is drawn into the manifold to be heated) can also become plugged. If your car (most likely) has the wire for an electric choke, I would find one on e-bay and convert it. They are much more reliable and easier to 'check'. How big is your 'brake tube'? If it's 3/16 it's too small. Should be 1/4" IIRC. That's my $0.02
