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Sirspeedy

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    44

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Profile Information

  • Location
    MA
  • Gender
    Male
  • Drives
    2016 Sierra Denali HD

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Enthusiast

Enthusiast (2/11)

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  1. Sirspeedy
    Guys what is the average rpm the truck runs at 70 MPH with the 6.0 6-speed 4.10 rear? Thanks for the help!
  2. Sirspeedy
    awesome!
  3. Sirspeedy
    Changed the oil, Amsoil Signature Synthetic @ 257k miles
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