340 Dart - Fuel Filter location

Beginning in 1963 Chrysler mounted fuel filters so the outlet would let the vapor out, minimizing vapor lock.
Carburetion and Performance Diagnosis (Session 188) from the Master Technician's Service Conference

1970 basically same position shown in the Dodge Service Manual
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There is also a 'sock' filter on the pickup tube in the tank.
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Moving the filter before pump was a measure when all else failed to resolve customer complaints about delay in starting in severe hot conditions
https://www.web.imperialclub.info/Repair/Lit/Master/291/page06.htmAs explained in the 1972 bulletin, its a tradeoff.

Additionally on an engine with potentially high fuel flow (ie high rpm full throttle racing) any restriction before the pump may be a strain. Pumps push better than they draw.

make sure there is summer fuel in the system before going to those sort of measures.
https://www.tapatalk.com/groups/rac...inter-fuel-in-hot-temperatures-t1459-s10.html