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Camshaft selection opinions

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by thatK30guy, Feb 4, 2007.

  1. thatK30guy

    thatK30guy 1 ton status Premium Member

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    Don't know whats going on in the garage but no one seems to be able answer this simple question.


    Truck specs are:

    '85 K30, 454, 400, 205, 60, 14, 4.10, 4" front and rear springs, 35" tires.

    454 is mildly built with a 260 Comp Cam with .475" lift. This cam is a dog. Rest of engine has an Edelbrock intake with an Edelbrock Q-Jet, Hedman headers, dual Sonic Turbos.

    400 is all B&M built. Shifts good and crisp. Stock converter.

    I'm looking at Lunati cams. I've selected one that I want to get more power and speed from. I don't want to change converters. I need someone who has the program-thingie to let me know what I can expect out of this cam I pick here: 292 degree advance duration, .544" lift, 2000-5500 RPM range.

    How will this cam perform on this truck? I'm not looking for a tow hauler or fuel economy. I'm looking for POWER but not too outrageous. This cam part number from JEGS is 638-00024LK.
     
  2. imiceman44

    imiceman44 1 ton status

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    This cam is too much for the torque convertor you have.
    If you don't want to change convertors, you need something a little milder.
    However if you use this cam your engine will be a dog on take off then it will wake up at higher RPM's
     
  3. HarryH3

    HarryH3 1 ton status Author

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    That cam is also too much for the stock heads. That baby is made for the drag racer set. Like IceMan said, it'll bog off the line, then set ya back in the seat when it finally gets up to its optimum operating RPM. But with stock heads you'll still be leaving at least 50-100 HP on the table. :( They just won't flow enough to take full advantage of the extra breathing that cam is capable of.

    When you say that the current cam "is a dog", what are the symptoms? No bottom end torque or does it run out of power too early up top?
     
  4. Chevy305

    Chevy305 6 Lug 14bsf Status Premium Member GMOTM Winner

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    Lunati Voodoo Cams is where the power it at! :bow: :bow:
     
  5. Chevy305

    Chevy305 6 Lug 14bsf Status Premium Member GMOTM Winner

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  6. thatK30guy

    thatK30guy 1 ton status Premium Member

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    So the big question is, which of those VooDoo cams would be "best" for mine?
     
  7. MetalMelter

    MetalMelter 1/2 ton status

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