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Thread: Tripower adjustment

  1. #1
    Member jims427400's Avatar
    Join Date
    Jun 2005
    Location
    Perrysburg,Ohio
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    747
    Corvette(s)
    67 427 tripower,68 427 tripower,04 Z16, 62 340hp

    Default Tripower adjustment

    So if I have my wife push the gas pedal all the way down and I observe the linkage, should I be able to manually open the linkage any further?? I'm trying to determine if I'm getting wide open throttle from the pedal.

    Thanks
    Jim

  2. #2
    Member
    Join Date
    Nov 2007
    Location
    Virginia Beach, VA
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    24
    Corvette(s)
    1989 Black Z51 Coupe

    Default

    With the gas pedal held to the floor, just verify that the center carb's butterflies are exactly vertical within the throttle bores. You can over rotate the throttle plate such that it goes past vertical and inadvertently chokes down the air flow through the carb. This over rotation can also result in a hung throttle so be sure to check for it.

    Assuming that you're using the mechanical linkage that came stock on a '67, make sure that the linkage is adjusted so that it doesn't hit the firewall or hang up on the ballast resistor's wiring at WOT. Now's a good time to make sure all the factory throttle return springs are functioning properly. Also check the vacuum lines leading to the front and rear carbs to make sure they fit properly and don't leak! (Can't tell you how many hours I've spent trying to figure out why I wasn't getting full power under acceleration that was the result of a vacuum leak! )

    Have fun with your tri-power!

  3. #3
    Member jims427400's Avatar
    Join Date
    Jun 2005
    Location
    Perrysburg,Ohio
    Posts
    747
    Corvette(s)
    67 427 tripower,68 427 tripower,04 Z16, 62 340hp

    Default

    That's what I was looking for..

    Thanks

    Quote Originally Posted by mr.beachcomber View Post
    With the gas pedal held to the floor, just verify that the center carb's butterflies are exactly vertical within the throttle bores. You can over rotate the throttle plate such that it goes past vertical and inadvertently chokes down the air flow through the carb. This over rotation can also result in a hung throttle so be sure to check for it.

    Assuming that you're using the mechanical linkage that came stock on a '67, make sure that the linkage is adjusted so that it doesn't hit the firewall or hang up on the ballast resistor's wiring at WOT. Now's a good time to make sure all the factory throttle return springs are functioning properly. Also check the vacuum lines leading to the front and rear carbs to make sure they fit properly and don't leak! (Can't tell you how many hours I've spent trying to figure out why I wasn't getting full power under acceleration that was the result of a vacuum leak! )

    Have fun with your tri-power!

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