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LS7 Rockers

This is a discussion on LS7 Rockers within the Drivetrain forums, part of the LSx Technical Help Section category; Will a 5.3 Truck rocker arm work on an LS7 without harming the motor? A mechanic installed one until I ...

  1. #1
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    LS7 Rockers

    Will a 5.3 Truck rocker arm work on an LS7 without harming the motor? A mechanic installed one until I get my CHE Rocker fixed.

  2. #2
    Spaz is My Mentor SMWS6TA's Avatar
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    They have a different ratio. 5.3 has a 1.7 ratio where are the LS7's have a 1.8 ratio.

    It may not seem much but it is a big difference. I personally would not run the motor till I got the correct rocker.

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