Powerband power on stand and rear wheels

Discussion in 'Buick FAQ' started by Rich Wardwell, Aug 22, 2019.

  1. Rich Wardwell

    Rich Wardwell Member

    I was wondering if anyone knows if the powerband power is quite a bit different from engine stand dyno and rear wheel dyno? Shouldn't you go by the rear wheel powerband when selecting your torque converter and gears ? Inquiring minds want to know.
     
  2. LARRY70GS

    LARRY70GS a.k.a. "THE WIZARD" Staff Member

    The torque converter will influence rear wheel HP as it has a lot to do with power train losses. The torque converter multiplies engine torque until it is coupled, so it plays a big part in rear wheel power. Our cars can lose as much as 20% and more from crank to rear wheels. Just the weight of the converter can impact that. The 9.5" converters that Tri shield Performance sells are easily 12lbs or more lighter than a stock 13" converter. When a converter manufacturer builds a custom converter they use the engine dyno sheet (if available) because that is what the converter sees as an input. Car weight and gearing also play a big part.
     
    Last edited: Aug 22, 2019
  3. Rich Wardwell

    Rich Wardwell Member

    I see so beause it is before the drive train the torque converter goes off of those numbers. So it is pretty important that you have the engine dynoed first?
     
  4. LARRY70GS

    LARRY70GS a.k.a. "THE WIZARD" Staff Member

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