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Do I need a return fuel line with mechanical fuel pump???

12K views 2 replies 3 participants last post by  smokey212 
#1 ·
I am about to convert a TBI thunderbird to a carb setup. I already have the performer intake and carb, and a malory distributer and coil. I have been trying to decide weather to get an electric or mechanical fuel pump. If I get a performer mechanical fuel pump, will I have to run a fuel return line?
 
#2 ·
the return line is a good idea as it sends hot gas back to tank ,and cold back to carb, helps against vapour locks , on mechanical pumps not needed,even electrics will work without them, but they are worth the time to install. The 1973 302 f150 trailor package ,i owned had a return line on it from factory, but back than ,didn't know any better and thought it wasn't needed ok bill
 
#3 ·
Nah don't worry about with a mechanical pump. You can do it if you want with the electric. I imagine you already have the return line to the tank already, so I would hook it up just to extend the pump life, and keep the strain off of it.
 
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