1600 CC, N/A, nearly all stock, Bosch 009 distributor, new carb, timing set per specs, mixture adjusted per specs... idles smoothly, however it loses power when accelerating...sometimes. Tends to bog down at low RPM, basically making it impossible to drive at 5-10mph. If i apply throttle with no load on the engine (in neutral) and hold it constant, the RPMs after a few moments, will tend to decline without any change in throttle position and the engine begins to run rough. If i do not make any further correction with the throttle, the engine dies. But if i let off the throttle, it goes back to idle and is quite happy there.
I have pulled off the oil bath air cleaner, and peered into the carb barrel as i pull the throttle, and can clearly see a nice smooth stream of fuel being injected down the barrel so i dont suspect the accel pump. I'm pretty sure i've got all the vacuum lines either blocked off or attached correctly.
Im not sure if im missing something obvious, or if i just need to spend some extra time fiddling with the timing/mixture settings. Any suggestions or insights are much appreciated, thanks.