with the air cleaner on and the motor running,spray starting fluid at the base of the carb,if the rpms pick up you have a bad gasket.Have you changed out the condenser with the new points?make sure you are not getting 12 volts to the distributor once the key is in the run position.
Hope some of this might help?
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72 luv v-8 owned since 16!
240" rear engine dragster
traded the circle track cars for a blown 496 chevy 
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29 dodge 4 dr sedan (project)
84 ranger 2wd "tuff truck" with 350 sbc