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- - Fuel rail question (https://67-72chevytrucks.com/vboard/showthread.php?t=782575)

michael bustamante

03-03-2019 05:31 PM

Fuel rail question

I'm running in 03 drive by wire 5. 3 LS motor with the fuel rail style being the return style. Question is which one is the fuel feed and which one is the return? Is the bottom one the return?

ls1nova71

03-03-2019 05:50 PM

Re: Fuel rail question

The bigger one (3/8) is the feed, the smaller one (5/16) is the return.

michael bustamante

03-03-2019 06:10 PM

Re: Fuel rail question

Great thank you! Running fuel line now.

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