What is this cause I just installed it

Discussion in 'Small Block Mopar Engine' started by bschubarg, Mar 13, 2018.

  1. bschubarg

    bschubarg FABO Gold Member FABO Gold Member

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    0CB074F2-1ACA-4D93-A778-7C20CCA26CEB.jpeg Roller cam for my 318...but will it work?
     
  2. dukeboy_318

    dukeboy_318 Our Lives, Our Fortunes and Our Scared Honor. FABO Gold Member

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    will it physically work? yes. How well it works is another question and we need a LOT more details about your engine to even remotely render a guess
     
  3. bschubarg

    bschubarg FABO Gold Member FABO Gold Member

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    Good point....
    Standard bore 318
    Mild ported Magnum heads
    1 5/8 headers
    RPM Air Gap intake
    Holley 670 Avenger
    Curb weight #3450
    Gears... get this... 2.23
     
  4. dukeboy_318

    dukeboy_318 Our Lives, Our Fortunes and Our Scared Honor. FABO Gold Member

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    stock compression? Stock converter?
     
  5. bschubarg

    bschubarg FABO Gold Member FABO Gold Member

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    Another good point...
    Static 8.8
    Stock TC
     
  6. bschubarg

    bschubarg FABO Gold Member FABO Gold Member

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    Oh wait.... it’s also a Oxford White Car...
     
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    • bschubarg

      bschubarg FABO Gold Member FABO Gold Member

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      Don’t know how net valve lift is .474 while lobe lift is .2925
       
    • brian6pac

      brian6pac Well-Known Member

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      looks like it would be 1.62 rockers
       
    • Dezduster

      Dezduster Active Member

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      Is it an Erson Cam they did the rocker 1.62 1.52 thing if I remember correctly.
       
    • AJ/FormS

      AJ/FormS 367 FormS clone 3.09-1.92-1.40-1.09-.78od 3.55s

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      here's my take on it
      Static compression ratio of 8.8:1.
      Your dynamic compression ratio is 7.21:1 .
      Your dynamic cranking pressure is 139.56 PSI.
      V/P (Volume to Pressure Index) is 108

      I added 53* to that .050 to gross it up to about 267 advertised, and installed it at 107, for an ICA of 61*...............As you can see the pressure is quite far down, and the VP is less than the stocker (114 IIRC). Bottom line is she's gonna want a lot higher than stock stall, and those 2.23 gears are gonna be a real headache.

      I know you didn't ask for it,
      but if you are looking for performance,then
      my advice is to first install the biggest rear gear you think can handle, and at least a 2400TC.(Personally I like a 2800 behind the teener). And if your engine is still together with the factory cam,then run this combo for at least a week in traffic, ....as is.
      But if the cam is already in, you might be in for a surprise. And you'll know pretty much exactly what to do............I vote at least a 9/1 starter gear and a 2800TC ..... cuz I know that will be a blast!
       
      Last edited: Mar 15, 2018
    • bschubarg

      bschubarg FABO Gold Member FABO Gold Member

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      Thanks for your research and taking the time to post your results... it is a custom cam I had ground with the same research you performed... what I didn’t mention was I have a 8.75 rear with 3.90 just taking up space...
       
    • AJ/FormS

      AJ/FormS 367 FormS clone 3.09-1.92-1.40-1.09-.78od 3.55s

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      DOH!
      3.90x2.45=9.56 bang on,You're on it!
      Do you have the "Advertised" specs too? How far am I off on those,lol? If it's custom, maybe they speeded it up some, and that would be very helpful to the low-rpm performance.
       
      Last edited: Mar 15, 2018
    • bschubarg

      bschubarg FABO Gold Member FABO Gold Member

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      Don’t have the “Adveristed” specs... but we are on the same page....you were the only one who replied with an intelligent response...which explains your success with Mopar racing....
       
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      • RustyRatRod

        RustyRatRod Just another dumbass. FABO Gold Member Technical Editor

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        I believe that's a camshaft.
         
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        • MOPAROFFICIAL

          MOPAROFFICIAL Well-Known Member

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          .442 lift , it'll "work"
           
        • QuickDart360

          QuickDart360 Well-Known Member

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          Ditch that 2.23 crap gear! 3.90 is way better. May not he all great on highway but around town it'll be quick!!:) maybe an overdrive can help or even a 5 speed if your into rowing your gears!