Fuel Pump Help needed
 

Hi,
I am working on my 78 Firebird. It originally had a 305 factory engine. I recently replaced it with a SBC ZZ4 GM Performance crate engine. The original set up which I replaced with St/St lines had a fuel and return on the passenger side and a vent line on the drivers side. The engine came with a fuel pump with just one inlet from tank and outlet to carb. I am having trouble finding a pump that has a return. Do I need it? The new sender has a return on it. Please let me have your suggestions. Thanks, Mike

You might need it if you run into vapor lock issues. You can use a bypass regulator if there is no pump with a build in return line.
At the moment I run my engine without return and no problems so far.

Try posting in the forum for "Non Pontiac Motors in Pontiacs" , I'm sure someone in that forum has experience with this situation.

http://forums.maxperformanceinc.com/...play.php?f=423

Karl

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