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what carb for a 454 bbc

Discussion in 'The Garage' started by 89Burben, Jul 28, 2006.

  1. 89Burben

    89Burben Registered Member

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    i was mainly looking at the holley truck avenger 670 or 770 cfm
    Or edelbrocks thunder series AVS offroad carb which is only available in a 650 cfm.

    Just wanted some opinions on which carb is better for the offroad scene and how does the edelbrock carb work?

    Two of my other 4wheeling buds have the TruckAvenger carb and they seem to do well. I just dont want a carb that is going to be high maintenance

    What CFM would work best for my app?
    its a 454 .030 over with an edelbrock dual plane rpm air gap manifold, mild comp cam, and headers desktop dyno says 350 hp and 530 ft lbs of tq.


    any helps appreciated thanks
     
  2. resurrected_jimmy

    resurrected_jimmy 1/2 ton status

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    Out of those I would take the truck avenger in 770 cfm. IMO its the best fit for you and is an easy carb to work on
     
  3. RootBreaker

    RootBreaker 3/4 ton status Premium Member

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    what he said...:bow:
     
  4. 89Burben

    89Burben Registered Member

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    alrighty, does the 770 cfm holley have the same problems that ive read about with the hesitation and then some people had to return them or was that only for the 670 cfm one?

    As far as tuning the carb should it be good right outa the box like they say? or do you gotta fidel with it?
     
  5. RootBreaker

    RootBreaker 3/4 ton status Premium Member

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    out of the box.. I dont think there are many carbs that will just bolt and go...


    also I dont know about the hesitations but that is an easy fix.... bigger accelerator pump and discharge nozzles... = more fuel..... but no hessitation
     
  6. 89Burben

    89Burben Registered Member

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    ok thanks for the info
     
  7. resurrected_jimmy

    resurrected_jimmy 1/2 ton status

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    There was a design change from the first run that came out. That problem has been fixed and if you have one of the problematic carbs Holley will replace it free of charge
     
  8. wicked87_k5

    wicked87_k5 1/2 ton status

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    What they said :D
     

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