3/8" Fuel Sending Unit - Impala Tech
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post #1 of 2 (permalink) Old 06-29-2009, 07:52 PM Thread Starter
Join Date: Jun 2009
Location: Manitoba
Posts: 60
3/8" Fuel Sending Unit

I'd like to replace the stock 5/16" sending unit in my '67 Impala with a 3/8" unit to supply the new big block. Has anyone else done this? Will a new sending unit from the parts store be of decent quality? Or should I swap in a used one? I only want to do this once.
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post #2 of 2 (permalink) Old 06-29-2009, 08:29 PM
Join Date: Jan 2006
Posts: 12,452
I would recommend buying a 3/8ths sending unit with a return line as well as your fuel delivery will be more reliable if you pump a lot of fuel forward and return what you do not mneed. it keeps the fue pressurized toprevent vapor lock anf cools the pump.

Big Dave
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