6 thoughts to “Fuel Injector Size Selection Guide”

    1. The LS3 injector is shorter in length compared to a LS2 injector. FAST offers a injector spacer/extension kit “146025-KIT” that will allow for LS3/LS7 injectors to fit the LS2 intake. Your LS2 fuel rails will work correctly so all you need is the spacers and O-rings that are included.

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