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Why did I pay $75 more for this cam?

Discussion in 'The Garage' started by BigBurban350, Dec 29, 2003.

  1. BigBurban350

    BigBurban350 1/2 ton status

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    I called up summit racing for some parts to finish my trucks engine. I ordered, or atleast attempted, to order a summit racing cam kit w/ lifters for $79. The salesperson said that this cam will not run correctly with my TBI so he sold me a crane cam powermax 2030 for TBI engines. Well, the cams according to some specs are basically the exact same, or are they? Can you tell my why I paid $75 more dollars for the powermax2030?

    Here are the specs

    /forums/images/graemlins/deal.gif Summit cam: SUM-K1102
    INT EX
    Duration @ .50 -> 204, 214

    Lift .420, .442

    Lobe separation 112

    /forums/images/graemlins/deal.gif Powermax 2030:

    Duration @ .50 -> 204, 214

    Lift .423, .446

    Lobe separation 110
     
  2. mudjunkie 82

    mudjunkie 82 1 ton status GMOTM Winner

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    Lobe center is a little wider on the summit cam. What is the advertised" duration?
     
  3. SUBFAN

    SUBFAN 1/2 ton status

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    I am guessing you have the lobe seperation angles backwards.

    That is the real determining factor in the computer compatibility, the 112 seperation angle. Plus the Crane name.

    If that makes sense to you....
     
  4. mudjunkie 82

    mudjunkie 82 1 ton status GMOTM Winner

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    I think you are right on the name thing........
     
  5. BigBurban350

    BigBurban350 1/2 ton status

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    [ QUOTE ]
    I am guessing you have the lobe seperation angles backwards.

    That is the real determining factor in the computer compatibility, the 112 seperation angle. Plus the Crane name.

    If that makes sense to you....

    [/ QUOTE ]

    The summit specs are out of the catalog and the powermax 2030 is from the website, check out technical at this link The Crane Cam Specs

    It says 110 lobe separation
     
  6. SUBFAN

    SUBFAN 1/2 ton status

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    You are correct....I thought 112 lobe seperation was easier for use with a computer.

    I would call Crane and see what they have to say. Or at least call Summit back and try the same conversation all over again with a different salesman.

    Both cams look very similar, but the Summit cam does not list the opening and closing events at the valve. Maybe that makes a difference here. I would investigate further, interesting to see how it comes out.
     
  7. BigBurban350

    BigBurban350 1/2 ton status

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    SUBFAN:

    Ill try and find out whats the deal because I could really use that extra money for headers /forums/images/graemlins/thumb.gif

    Im not a member yet so I cant reply to PMs. Im gonna get an account very soon though /forums/images/graemlins/laugh.gif
     
  8. Sandman

    Sandman 3/4 ton status Author

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    Maybe they saw your avatar and wanted you banned! /forums/images/graemlins/rotfl.gif
     
  9. thor

    thor 1/2 ton status

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    [ QUOTE ]
    What is the advertised" duration?

    [/ QUOTE ]
    I'b bet that is it... Most inexpensive cams have a huge base duration and very slow ramps, not as computer friendly.
     
  10. SUBFAN

    SUBFAN 1/2 ton status

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    The advertised durations are 262 272, something just seems fishy....
     
  11. Thunder

    Thunder 3/4 ton status

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    The summit cam wont work with the stock chip. You would probabally need to get a custom chip burned to make it work right. They cost $250 + depending on other mods you have.
    Even the Crane 2030 is pushing the limits of a stock TBI system. If you are doing a real high performance build on your engine like better heads, intake, headers, Larger TBI and mods, higher stall convertor, ect,ect. The 2030 will work good.
    But.
    In my opinion if you are just putting it in a engine with stock TBI heads you might be better served going with a Crane 2020. They build good low and midrange power. Which is better for a truck than the higher RPM range of the 2030.

    The best thing to do is call Crane Cams and see what they recomend for your particular engine build. TBI is very particular on cam choice there are a whole bunch of varibles you have to figgur in to get the right cam.
    The wrong cam can be a major dissapointment. Or at worst a blown engine.
     

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