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Autolite 4100 Venturi placement. The veturi with the small holes in the side are the primary side. This is the same end as the small accelerator pump.
These small holes is where the accelerator pump discharges when you press on the pedeal. You should get a good squirt out both holes.



Autolite 4100



Distributor vacuum port is 1/8" pipe thread.

Fuel pump pressure should be no more than 4 lbs. New pumps are not that accurate so you may have to add a fuel pump regulator between the pump and the carburetor.

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