290 hydraulic roller specs

Discussion in 'Inquiries' started by 87GN_70GS, Aug 11, 2016.

  1. 87GN_70GS

    87GN_70GS Well-Known Member

    What are the specs for the new 290 equivalent hydraulic roller cam? A local friend (S. Tenn.) has one but was unsure of the particulars.
     
  2. 87GN_70GS

    87GN_70GS Well-Known Member

    <...sounds of crickets chirping...>
     
  3. LARRY70GS

    LARRY70GS a.k.a. "THE WIZARD" Staff Member

    Scott, you mean the 290H roller equivalent? When Jim Weise built my first motor, the one he tested 3 cams in, he also tested a roller version of the 290H (238/238, 112). That Dyno session is why he took my motor apart because the motor lost about 40 HP. That is when he found that #4 main web problem. Jim might be able to tell you what you need to know about that roller cam.
     
  4. TA Perf

    TA Perf Member

    TA 290RH, .363"-238', .363"-238'. Advertised duration is 290'. We can grind on what ever lobe separation you would like. Another cam we have ground in the past for a few customers is the TA294RH. .360"-238', .360"-238' this cam has an advertised duration of 294'. The lift I am showing here is lobe lift, multiply that number be your rocker ratio to get valve lift. .360x1.6=.576"
     
  5. 87GN_70GS

    87GN_70GS Well-Known Member

    Thank you
     
  6. 87GN_70GS

    87GN_70GS Well-Known Member

    Can you use non-valve notched (standard dished) pistons with either of those?
     
  7. LARRY70GS

    LARRY70GS a.k.a. "THE WIZARD" Staff Member

    I wouldn't.
     

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