Anyone know the injector size on 08 Sierra 5.3L

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01-30-2009, 03:28 PM

CalSpeedPerformance

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Anyone know the injector size on 08 Sierra 5.3L

Trying to track down info on stock injector size on 5.3L NNBS 08 Sierra

I just finished heads/cam/headers/etc on it and Ive got some 33lb GTO LS2 injectors that I am going to swap in if the stocks are smaller.

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01-30-2009, 03:48 PM

schino

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not sure of exact size. im sure someone will chime in but if its flex fuel i believe they are bigger then the non flex motor

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01-30-2009, 09:34 PM

JB1

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if you have a flex engine, the injectors are allready 32lb IIRC

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01-31-2009, 01:22 AM

RickLowpez

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so if no flex fuel just regular what would be the injectors?

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01-31-2009, 01:37 AM

shupe

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Check this thread: https://www.performancetrucks.net/fo...=432117&page=2

From what i can tell standard 5.3 is 26 FF is 32

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