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Help Me with Cam Selection.

Discussion in 'The Garage' started by nemesis_pyros, May 10, 2006.

  1. nemesis_pyros

    nemesis_pyros 1/2 ton status

    Joined:
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    Location:
    Winnipeg, Manitoba
    Ok so I need a cam for my Hotrod. Its a 49 chev pickup with a 454/th400 and 3.08 gears. I have an Edlebrock 750 carb on a Performer RPM 2 intake. The heads have had bigger exhaust valves put in them along with opening up the valve pockets. Its running around 9:1 comp.

    Well now I need/want to get a cam for it but I have no Idea what to look for. I called comp cams and they suggested this

    Lift int/exh .547/.547
    Duration @50 int/exh 232/237
    LSA 110


    I found these 2 that are in my price range and SEEM simular
    Operating Range:2200-6200 RPM
    Duration Advertised:
    286° Intake / 286° Exhaust
    Duration @ .050'' Lift:236° Intake / 236° Exhaust
    Valve Lift w/1.7 Rockers:
    .556'' Intake / .556'' Exhaust
    Lobe Separation Angle:
    110°

    and

    Basic Operating RPM Range: 1,800-6,000 RPM
    Duration at 050 inch Lift: 230 int./236 exh.
    Intake Valve Lift with Factory Rocker Arm Ratio: 0.552 in.
    Exhaust Valve Lift with Factory Rocker Arm Ratio: 0.555 in.
    Valve Lift with Factory Rocker Arm Ratio: 0.552 int./0.555 exh. lift
    Lobe Separation (degrees): 110

    Sorry about the long post but after talking to the guy on the phone I have no Idea what would work well other than the one he recomened. So I'm looking for some Help.


    Thanks.
     
  2. Zeus33rd

    Zeus33rd Smarter than you GMOTM Winner

    Joined:
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    Location:
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    I just finished my 454 build and install with this cam-
    [​IMG]

    Comp Cams 11-239-3 is the part #. I have the small "peanut port" heads, so it'll never be a screaming hp motor. But so far, after a couple weeks of driving it, I love it. It has a very slight lumpy idle, with awesome throttle response. This cam is one of the Extreme 4x4 cams. So far so good. :)
     
  3. dyeager535

    dyeager535 1 ton status Premium Member

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    3.08 gears? I hope your trans first gear ratio is 4:1 or so!

    Dump the 3.08's and then see if you even need a cam. (or if unbuilt, decide on gears then match cam to that)

    I'm hoping that even though it's a '49, swapping gears is still an easy task.
     
  4. nemesis_pyros

    nemesis_pyros 1/2 ton status

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    Well I'm pretty sure I need a cam. 2 rockers are moving a lot less than the others. I'm gonna try to pick up a couple lifters this weekend and try those out but I'm not getting my hopes up. Besides the cam was given to me and I have no idea of the specs on it. It would be nice to know whats in it.

    Gears are in the future but for now is sees the highway and with the 3.08's and th400 it tach's about 2000 rpm at 60mph. oh and the rearend is a 10 bolt out of a 68 camero.
     

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