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new cam...check out post #6

Discussion in 'The Garage' started by PsychoticDeadGuy, Oct 18, 2005.

  1. PsychoticDeadGuy

    PsychoticDeadGuy 1/2 ton status

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    as far as i have heard, my 87' 350ci TBI is a hydralic flat tappet design...correct?

    would this be a good cam?
    or should i go with a cam with less lift? is this too much for my stock heads? my heads are vortech right? they are center bolt in the valve covers.


    $189.95

    Brand: Edelbrock
    Product Line: Edelbrock Performer RPM Cam and Lifter Kits
    Cam Style: Hydraulic flat tappet
    Basic Operating RPM Range: 1,500-6,500 RPM
    Intake Duration 050 inch Lift: 234
    Exhaust Duration 050 inch Lift: 244
    Duration at 050 inch Lift: 234 int./244 exh.
    Advertised Intake Duration: 308
    Advertised Exhaust Duration: 318
    Advertised Duration: 308 int./318 exh.
    Intake Valve Lift with Factory Rocker Arm Ratio: 0.488
    Exhaust Valve Lift with Factory Rocker Arm Ratio: 0.510
    Valve Lift with Factory Rocker Arm Ratio: 0.488 int./0.510 exh. lift
    Lobe Separation (degrees): 112
    Intake Valve Lash (in): 0.000
    Exhaust Valve Lash (in): 0.000
    Computer Controlled: No
    Lifters Included: Yes
    Lifter Style: Hydraulic flat tappet
    Valve Springs Included: No
    Retainers Included: No
    Locks Included: No
    Valve Stem Seals Included: No
    Timing Chain and Gears Included: No
    Assembly Lubricant Included: Yes
    Pushrods Included: No
    Rocker Arms Included: No
    Gaskets Included: No
    Quantity: Sold as a kit.

    Cam and Lifters, Hydraulic Flat Tappet, Advertised Duration 308/318, Lift .488/.510, Chevy, Small Block, Kit
     
    Last edited: Oct 18, 2005
  2. sled_dog

    sled_dog 1 ton status

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    no.

    I think Edelbrock cams are crap. They are behind the times in camshaft designs.

    Look to comp cams or someone else.


    Now from a strictly cam specs point of view. That cam has too much duration for a TBI motor. Keep it lower, say 200-210 @ .050" lift. Lobe seperation is important too, 112 is about right for a TBI camshaft. Contact Comp Cams and they will help you out picking a good cam.
     
  3. PsychoticDeadGuy

    PsychoticDeadGuy 1/2 ton status

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    are you saying that "no" its not a hydralic flat tappet cam?
     
  4. trailblazr81

    trailblazr81 1/2 ton status

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    Yes its hydraulic flat tapit

    The Edelbrock design is dated. And the RPM cam you list is too big for the motor. And you should be looking for a cam that provides good low end torque. Stay between 204-214 degrees @ .050

    The best thing to do is call Comp Cams. They will ask you many questions, then tell you the best came FOR YOU!! :waytogo:
     
  5. sled_dog

    sled_dog 1 ton status

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    sorry about that:

    Yes it is a flat tappet hydraulic camshaft in your motor.


    NO you don't want that cam or an Edelbrock cam for that matter.
     
  6. PsychoticDeadGuy

    PsychoticDeadGuy 1/2 ton status

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    what about this one? it comes with cam, lifters, springs, timing chain ang gears.
    $345.39
    Brand: Competition Cams
    Product Line: Competition Cams Xtreme Energy Cam and Lifter Kits
    Cam Style: Hydraulic flat tappet
    Basic Operating RPM Range: 1,000-5,000 RPM
    Intake Duration 050 inch Lift: 206
    Exhaust Duration 050 inch Lift: 212
    Duration at 050 inch Lift: 206 int./212 exh.
    Advertised Intake Duration: 249
    Advertised Exhaust Duration: 260
    Advertised Duration: 249 int./260 exh.
    Intake Valve Lift with Factory Rocker Arm Ratio: 0.434
    Exhaust Valve Lift with Factory Rocker Arm Ratio: 0.444
    Valve Lift with Factory Rocker Arm Ratio: 0.434 int./0.444 exh. lift
    Lobe Separation (degrees): 112
    Intake Valve Lash (in): 0.000
    Exhaust Valve Lash (in): 0.000
    Grind Number: CS XE249H-12
    Computer Controlled: Yes
    Lifters Included: Yes
    Lifter Style: Hydraulic flat tappet
    Valve Springs Included: Yes
    Outside Diameter of Outer Spring (in): 1.254
    Retainers Included: Yes
    Locks Included: Yes
    Valve Stem Seals Included: Yes
    Timing Chain and Gears Included: Yes
    Timing Chain Style: Double non-roller
    Assembly Lubricant Included: Yes
    Pushrods Included: No
    Rocker Arms Included: No
    Gaskets Included: No
    Quantity: Sold as a kit.

    Cam and Lifters, Hydraulic Flat Tappet, Advertised Duration 249/260, Lift .434/.444, Chevy, Small Block, Kit
     
  7. trailblazr81

    trailblazr81 1/2 ton status

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    thats better, might want to look at com cams and lunati's truck/4x4 cams.
     
  8. dyeager535

    dyeager535 1 ton status Premium Member

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    And no, they aren't Vortec heads.

    Vortec is '96+ for V8's. (and then some, but we won't get into that)
     
  9. theperfectgarage

    theperfectgarage 1/2 ton status

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    your second choice( the comp) is much better. ask yourself where do I REALLY need power. for most of us I'll venture idle to 3500 rpm ( not counting you mud bog guys). how often are we at 5000 rpm or better? In my modified 350 give me a cam that makes power from 700 rpm up.
     
  10. BadBob

    BadBob 1/2 ton status

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    You could just call the toll free Comp Cams help line and ask what they reccommend. It'd probably be something in the XE4x4 line.
     
  11. trailblazr81

    trailblazr81 1/2 ton status

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    What other mods are being done to this motor? Headers, intake manifold and carb? Are you going to do head work or up the compression? What gearing and tires you plan on turning. And what do you want it to do? Slow trails and rocks you'll want low end torque. Spinning 40+ inch tires through slop n muck will want more upper end HP. Just click here http://compcams.com/ In the lower right corner click on "Online tech assistance" fill out the form.
     
  12. PsychoticDeadGuy

    PsychoticDeadGuy 1/2 ton status

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    well, i figured this would be a good cam for my application. i will be getting an edelbrock intake and throtle body spacer. i will be running 5.13s with 38.5x14.5x15 tires. i spend alot of time in the mud with the occasional rock crawling. this cam would be perfect, i think...
     

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