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Are 5.3L Truck throttle bodies the same as 5.7L TBs

This is a discussion on Are 5.3L Truck throttle bodies the same as 5.7L TBs within the External Engine forums, part of the LSx Technical Help Section category; are the TBs interchangeable?...

  1. #1
    2nd-4th gen owner socmninja's Avatar
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    2000 Z28 M6

    Are 5.3L Truck throttle bodies the same as 5.7L TBs

    are the TBs interchangeable?

  2. #2
    Senior Member 35thAnniZ28's Avatar
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    eating bulldog
    son of biscuit

    pretty sure its interchangeable....have you seen the intake manifold on the 5.3? dispicable

  3. #3
    UberTapping Friction Pimp Anthracis's Avatar
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    18D Cock Diesel
    1999 Z28; 98 SS #2043 RIP

    80mm LQ4 Cable actuated TB is a direct bolt on to the LS1. I think they are off 97-98 GMC trucks. Junkyard should be able to sell you one fairly inexpensive.
    "I am the executioner. When a crime is committed and the exalted state does not take vengeance nor move to punish, then comes time for the executioner to declare himself. I have waited long enough. The criminals are hereby sentenced to death. By fire. By earth. By water."

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