Solid lifter / Hydrualic Cam

Big Block A body Tech

  1. Andrezinho

    Andrezinho FABO Gold Member FABO Gold Member

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    For an original engine, it is true that they do a good job, and if the engine is well maintained, with the changes of oil, filter and respect the maximum rotation limits of the engine. I already fit a lot of hydraulic lifters no problem. I find it unfortunate that the American manufacturers do not make more models of mechanical camshafts. but bom it is only an opinion.
    In Europe it is very difficult to find hydraulic cams, the majority are mechanical.
     
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    • IQ52

      IQ52 Well-Known Member

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      Thank you sir. That was a very pleasant response. You are a lesson in civility.
       
    • Andrezinho

      Andrezinho FABO Gold Member FABO Gold Member

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      the big problem here in europe is that any competitive item is very expensive. with too selective a too snobbish sprit.
      I have the impression that at home in the USA, it is very well answered and for any kind of budget.
       
    • Bighead440

      Bighead440 Well-Known Member

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      I have posted many times here, and elsewhere on forums, about the viability (in certain situations) of Rhoads V-Max lifters. I was never really a proponent of regular Rhoads lifters as a way to crutch a poorly matched (too big) for the application cam selection or especially running a bigger cam than needed with the intention of using Rhoads to manage it at lower rpm. When the V-Max came out, I studied their literature/marketing and it seemed like they had a product worth trying as a feature, not a band-aid. After running the V-Max myself, I can attest that they perform as advertized, on a large hydraulic cam. There is some noise as you would expect, but no more than a modern tight lash cam. I used them with a PurplePlus Comp Cams .904 specific hydraulic ".508" grind, a split pattern (247/254*-108LSA) version of the old DC/MP grind. With 273 valve gear on a cast (SpeedPro 4 eyebrow hyper) 9:1 compression 367 (+.040") and ported 2.02" J-heads and an RPM intake it ran 7.0s @96mph in the 1/8mi in a 2700lb car. Would rev cleanly over 7000, we had the limiter set to 7500 and shifted (904 TF, 4000 stall) at 7200. Never messed with the "lash" setting (preload off the BOTTOM of plunger travel), we had it set at .030 but you can set it as tight as .010" and as loose as .035" for that much "bleed" at idle. The car was overtired but adequately geared, so we left it loose for bottom end. Next I want to build a 426W from a 413 industrial block and use an old Sig Erson 990C solid (330* advertized duration!!) 280*@.050" .540" lift, with the V-Max to calm it down some, and I know they'll stand the RPM. I think these are viable for street use too, but have not done durability testing that I can verify. I'm actually wanting to try them on the street soon, too many irons in the fire right now....
       
    • oldkimmer

      oldkimmer FABO Gold Member FABO Gold Member

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      I have just used the regular Rhodes lifters on both hyd and mech cams. Both with non adjustable factory rockers. Great results each way. Kim
       
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      • Bighead440

        Bighead440 Well-Known Member

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        Kim I think the soft "bleed" effect just simulates lash, allowing it to work! Preload is always nice to have set accurately, I've used adjustable pushrods with stamped rockers and iron early Hemi rockers too.
         
      • oldkimmer

        oldkimmer FABO Gold Member FABO Gold Member

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        Rodney, with the Purple shaft solid cams that I used lash was approximately.010/.015 and .020. Preload on the hyd cams was about the same. Kim
         
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        • Kendog 170

          Kendog 170 Let the boy go !

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          I don't have any at idle video to add but my son sent the run I made at the track that day. Told him he F#@*ed up as he didn't zoom at my time in the end.
           
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