'85 K30 454 bogs under load

[irishman999]

thats really really high altitude. It sounds like its starving for fuel, i would start with the fuel filter and a pressure tester on the pump.

Im new to rebuilding/tuning carbs but i promise its easy if your do some research. Try google and search for your carb tuning.

From what i read about the quadrajet its rated up to 750cfm, its more efficient than a 2 barrel carb as long as you dont smash on it opening the secondaries, when the secondarys do open you get alot of fuel. When tuned right it could be your perfect application, they are easy to find as well.