1. Rmoore

    Rmoore Well-Known Member

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    Opinions on Isky Red Zone mech roller lifters for a 500 ci low block ! 10.5 pump gas motor with Trick Flow 240 heads and a Track Heat manifold!!

    cam is

    .670 intake
    264 @50

    .667 Ex
    .270 @50
    109 LSA
    106 installed
    1.5 rocker arm Harland Sharp
    TTI 2 in under chassis headers
     
  2. RustyRatRod

    RustyRatRod I was born on a Monday. Not last Monday. FABO Gold Member

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    Look very high quality. .810 rollers. That's big.
     
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    • Rmoore

      Rmoore Well-Known Member

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      I’ve heard a lot of good about Isky !!! Morels I’m hearing the same ! Both are good ! Just wondering about which one really ! Guess I should have worded my question differently !
       
    • MOPAROFFICIAL

      MOPAROFFICIAL Well-Known Member

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      Not super nasty, real sweet.
       
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      • MOPAROFFICIAL

        MOPAROFFICIAL Well-Known Member

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        Morels.
         
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        • Rmoore

          Rmoore Well-Known Member

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          Going to do some street and track duty ! Should be a good runner ! Have some fun with the boys on the street !
           
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          • rumblefish360

            rumblefish360 So close, yet so far away FABO Gold Member

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            A lot of RB guys I know with a bit more the. average & serious builds use the Isky or Crane rollers. I know Crane is long gone now. (RIP) I’d run the big wheel roller tappet for sure.
             
          • RustyRatRod

            RustyRatRod I was born on a Monday. Not last Monday. FABO Gold Member

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            Morel very likely makes the Iskys.
             
          • rumblefish360

            rumblefish360 So close, yet so far away FABO Gold Member

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            LMAO, yea, probably so. I didn’t think.
             
          • ChargerST

            ChargerST Well-Known Member

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            Have you looked at BAM roller lifters? or Jones lifters (those might be just repackaged BAM lifters though idk).
             
          • Bewy

            Bewy Well-Known Member

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            Read this week on another forum where two Morel hyd lifters failed.

            Both I & a mate have Isky bushed lifters in our engines, solid lifter cams. Been in many years. I drive my car most weekends [ in lockdown again here ] & have not checked the lash in 2 yrs, valve train is still quiet.
             
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            • Jeremiah

              Jeremiah Well-Known Member

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              Jones sells BAM lifters. They seem to be worth investigating. Especially the DLC coated steel bushing version. The only thing that steered me away from BAM is that he only sells .210 offset pushrod cup version vs. Isky who uses a .180 offset.

              .030...big deal right?

              I don't think your heads use offset intake rockers so no worries there.

              What are the valve spring pressures like? Many of the roller lifter options are dictated by spring PSI over the nose of the cam lobe.

              If money was no object my choice would be BAM and see how tight you can run the lash on the street. All of that rattling from the valve train makes me paranoid on a car with mufflers!

              If you are going to run a non-bushing lifter get a set of comp-829's and send them out for a rebuild when the lash opens up. Roller cams (and SFTs) are for folks that don't mind checking lash once in a while.

              FWIW my 511 that is slowly coming together has .800+ lift and calls for 900lbs over the nose with a power adder. I spec'd Isky Red Zone EZ-Max lifters and they are overkill even for that.

              Thinking back I believe that my best prices on both sets of EX-Max version were a result of calling Isky direct.
               
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