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Thread: 470 Truck Avenger Bogs

  1. #1

    Default 470 Truck Avenger Bogs

    My 470 Truck Avenger gags when I floor it quickly in 2nd gear, and it kinda jumps in 1st gear if I get on it. What adjustment should I make or part should I replace?
    Specs: Jeep 258 bored .060", 470 Truck Avenger, Dual port Offenhauser intake.

  2. #2

    Default Dashpot installation - Holley 470 Truck Avenger

    Can you put a dashpot on a 470 Holley Truck Avenger?

  3. #3
    Join Date
    Jan 2010
    Brisbane, Australia


    Strangest factory jetting I've seen. Small 4150 with a 35 pump nozzle, a 25 power valve, and a black secondary spring. I'd pull the pump nozzle down to 28 as a start, and change the power valve to an 85, if still stock camshaft. Gary

  4. #4


    I have a 28 nozzle coming. I should mention my vacuum gauge reads steady 23 inHg vacuum.

  5. #5


    I put the 8.5 power valve in and the 28 nozzle. It drives OK, but I feel like I lost some speed & torque.
    Any reccomendations to get the speed and torque back ? It idles well but rich.
    Last edited by Agear; 12-23-2020 at 10:07 AM.

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