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Headers VS original

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by 75blazer454, Nov 26, 2002.

  1. 75blazer454

    75blazer454 Registered Member

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    hi, i have headers on my 454 but they are no good..

    if i buy the original exaust manifold do i lose mutch horspower? nm?


    sorry for my bad english,,
    kristoffer
     
  2. BorregoK5

    BorregoK5 1/2 ton status

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    You wont notice much of a loss at low rpm's but mid to high might feel restricted compared to the headers. How well the rest of the exhaust flows could play a big part in how different it feels as well.
     
  3. Skigirl

    Skigirl 1/2 ton status

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    I have a 350 and just replaced headers with stock manifold. Runs just fine at speed, I don't notice any difference really. I kept my true dual exhaust with no cats so that probably makes a difference too.
     
  4. Z3PR

    Z3PR Banned

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    Biggest thing you'll loose is the kewl factor. And you'll need to replace part of the exhause system to go to factory exhaust manifolds. Personally, I plan on going to Doug Thorley TRI-Y headers in the near future.
     

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