73’ 318 dies under accel with new intake & carb

Which vacuum source do you have the distributor advance can hooked to? Make sure it's hooked to ported (timed) vacuum- if you hooked it to unported (manifold) vacuum, it will be fully advanced as soon as the engine fires, and will cause a bog when you try to accelerate.
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Interesting. I'm fighting a bog issue and my distributor advance is hooked up to the manifold vacuum and not the (timed) port vacuum. The timed port vacuum is just plugged off.