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HP gain from Headers

This is a discussion on HP gain from Headers within the External Engine forums, part of the LSx Technical Help Section category; I have had 3 fourth generation Trans Ams,two with headers and the one i currently own which has no headers,i ...

  1. #1
    **Te@M fBoDy** fbodyNATION's Avatar
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    Pewter Metallic
    2000 Pontiac Trans Am WS6

    HP gain from Headers

    I have had 3 fourth generation Trans Ams,two with headers and the one i currently own which has no headers,i feel the difference between stock headers & aftermarket performance headers seems like my previous LT1 & LS1 produced more power with the addition of the aftermarket performance headers,my question is how much horsepower does the aftermarket performance headers actually add to the car? I found a set of edelbrock stainless steel headers with Y pipe for $325 these are used though,BTW my previous cars had full aftermarket exhaust,my current car has Borla exhaust

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    Senior Member tatertot91's Avatar
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    Sunset Orange Metalic
    2001 Camaro SS

    20-25hp is typical through LTs and an ORY

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    Slow'er'Ass Mr. Luos's Avatar
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    Red Tint Jewelcoat
    2008 Trailblazer SS

    Tune will effect this number greatly.
    So will the other mods on the car.

    Basic bolt-on car without tune? 10-15RWHP.

  4. #4
    Senior Member tatertot91's Avatar
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    Sunset Orange Metalic
    2001 Camaro SS

    True, didn't take that into account
    Most gains will be up top

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