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Need help picking out a cam

Discussion in 'The Garage' started by Tshane, Mar 30, 2003.

  1. Tshane

    Tshane 1/2 ton status

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    I have decided to go with the comp cam Xtreme 4x4. I have 4 different choices that can come in the kit I want to get. Now I need to know what is the biggest i can go with a stock stall converter here are the specs on all 4.


    Adv Dur 250/258,Dur@.050 206/214,Lift 432/453

    Adv Dur 254/262,Dur@.050 210/218, Lift447/462

    Adv Dur262/270,Dur@.050 218/226, Lift462/480

    Adv Dur270/278,Dur@.050 226/234, Lift 480/498

    Thank you guys very much /forums/images/graemlins/truck.gif
     
  2. K5MONSTERCHEV

    K5MONSTERCHEV 1/2 ton status

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    I want to run the same cam, call comp and talk to them about it, they'll be able to help you out.
     
  3. crazyrc

    crazyrc 1/2 ton status

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    I don't remember the exact specs, but I'm running the biggest lift/duration in the roller version of the comp 4x4 extreme cam. This is in a 400 SB. If you've got heads that will flow alot of air, then go for it, but it depends what you want to do with it. My 400 made 460HP @5600 and 540lbs @4400. Even though thats a high rpm for a torque peak, it still makes 380lbs torque at 2800 rpm. If you're always in the rocks, then you don;t need the rpm or the HP, go for less lift/duration. IF you can afford it go with the roller version. With those numbers my engine still idles(with a slight lope) at 750 rpm and still makes good vacuum.
     
  4. Topdown

    Topdown 1/2 ton status

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    Per the summit reps... (grain of salt?) the range is something like:
    190 - 205 - stock RPM converter
    206 - 220 - 500 - 600 over stock
    221 - 230 - 1000 over stock
    231 - 234 - 1000 - 1500 over stock
    234 - 238 - 2000 over stock
    239+ you need a "special race converter"

    I dont know how true that might be, but hopefully it will be a worthwhile guideline. I am going to be running a 224/230 cam myself (mild lope @ idle) and the power band is supposed to be roughly 2k - 5k RPM, which is right where I drive 90% of the time. I will be running a stock converter also.

    Hope that helps at least a little.

    -Ryan /forums/images/graemlins/k5.gif
     
  5. Z3PR

    Z3PR Banned

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  6. Beast388

    Beast388 1/2 ton status

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    I am running the 2nd one you listed and am very happy with it in my 388. Like someone already suggested, call Comp Cams and let them recommend one for you. They will ask you all of the pertinent specs on you engine and vehicle. Doing this takes all of the guesswork out of cam selection. /forums/images/graemlins/thumb.gif /forums/images/graemlins/burb.gif
     

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