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    Default Please Help with Street Avenger 770

    Hello all. I have a question and hopefully someone can answer. I rebuilt my carb a few days ago and I cannot get this thing to run good at all. Little about my engine:
    454 Mark IV
    Mild street cam: .515"/.520" duration @ .050" 224°/230° Lobe 110°
    Torquer intake manifold
    Stock oval iron heads. 2.02"/1.77"
    Mallory Unilite Mechanical advance
    Accel coil

    I had place the wrong meter gasket on. Engine ran bad, fixed the gasket. 6.5 Power Valve blew, changed to a 4.5 (because I had one). Now, My vacuum was low at 10 inHg when I got this car. Talking with someone, they help me adjust the secondaries to get more vacuum. At 14 inHg now. Car idles good around 800 on idle, around 700 in gear. Timing was at 20° initial/40° top, but have to bring that back down. Car overheated on test run. Engine seems to like 14-16° initial; 32-36° top.

    Now today when I screwed in the passenger side mixture screw all the way in, the engine didn't even budge. I closed the mixture and started to close the drivers side. Engine started to lower its idle, but never shut off. Both mixture screws closed, engine is put putting on. If I leave the passenger side open and close the drivers side, engine barely changes idle. I do not think this is right. Am I wrong? Car is blowing black smoke and smells rich in gas. New PV installed today and still same symptoms. I'm hoping someone can chime in. Had someone knowledgeable try & help, but he cant figure it out either. Thank You in advance.
    Last edited by morrongafish; 03-13-2019 at 08:08 PM.

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