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fuel pump capacity

This is a discussion on fuel pump capacity within the Internal Engine forums, part of the LSx Technical Help Section category; Hi all, In a nut shell, I did a cam swap and a few other mods to increase my horsepower ...

  1. #1
    Junior Member
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    fuel pump capacity

    Hi all,

    In a nut shell, I did a cam swap and a few other mods to increase my horsepower to 403 at the wheels. When the car dynoed, the air to fuel curve starts leaning out towards the top end of the rpm range. Through some research it is apparant that I need to install larger fuel injectors, but can't find anything on the fuel pump. What can the stock fuel pump handle for the ls1? I'm either going to go with the 37 or 42# injectors, but would like a little insight on the stock fuel pump for our ls1's. Has anybody run the stock pump with these size injectors and found that it is alright to do so?

    Thanks.

  2. #2
    Junior Member
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    Any takers?

  3. #3
    Senior Member JaycenK's Avatar
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    1997 Camaro Z-28

    swap it with a racetronixs pump then there will be no questions.

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