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  1. 06-07 LBZ & LLY Duramax Powertrain
    My ‘06 has a rattle at about 1000 RPMs. I’ve only noticed this after swapping out a cracked number 6 piston (Didn’t pull motor). I checked my balance rates and all seems good, original injectors 173k miles. But during my search I noticed that a bolt on the bottom passenger side of the bell...
  2. Wheels & Tires
    What is the relation between the tire sizes and RPMs? Will there be any noticeable different in RPMs if I go from 285/75R16s to 265/75R16s? I'm currently running 2K RPMs at 70MPH with the 285/75R16s. I know there will be some change, but how much? Thanks for any input.
  3. 01-04.5 LB7 Duramax Powertrain
    Hey guys, I have a 2003 GMC Sierra 2500HD with the LB7, of course. Anyway I had a 7.3L back in the day, but I have been out of the diesel seen for awhile and just bought this truck. I have been driving it for about a week and noticed my RPMs seem to be high. At least it makes me a little...
1-3 of 3 Results