Roller cam. Hydraulic vs. Mechanical in a 340

Discussion in 'Small Block Mopar Engine' started by Bodyperson, Sep 11, 2018.

  1. Bodyperson

    Bodyperson Well-Known Member

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    I've read that hydraulic roller lifters sometimes have issues in the 340.
    Does the same issue occur when using a mechanical roller lifter in the 340?

    Is there a way to tell if the lifter bore is going to work before actually buying and installing the roller lifter?
     
  2. MOPAROFFICIAL

    MOPAROFFICIAL Well-Known Member

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    Use either a morel street roller, or solid body .. or even low oil band style
     
  3. MOPAROFFICIAL

    MOPAROFFICIAL Well-Known Member

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    Take a pic of the lifter bores, check the counter sink of each.
     
  4. davescuda

    davescuda FABO Gold Member FABO Gold Member

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    if you're not using a solid body lifter bush the lifter bores
     
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    • davescuda

      davescuda FABO Gold Member FABO Gold Member

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      They also have problems on the underside most on the back ones
       
    • Bodyperson

      Bodyperson Well-Known Member

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      You guys are saying solids is a go? I have no problem with solid.
       
    • MOPAROFFICIAL

      MOPAROFFICIAL Well-Known Member

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      Have not encountered this.
       
    • 512Stroker

      512Stroker We are all here because we are not all there.

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      I just went thru all this crap Hyd roller vs solid lifters.
      Save yourself a bunch of grief and money and go with a good non roller solid lifter for the steet.
      I recently did a street 340 build with a Comp full Hyd roller top end and the lifters have been nothing but problems from the start.
      I am sure there are other forum members that will tell you they have no issues with rollers and I am confident that is true. Myself unless I am building an all out race engine I will nevvvvvver put any type of roller in a street application again.
       
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      • rumblefish360

        rumblefish360 so close yet so far away

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        There should be no problem with a solid lifter cam. Use today’s lifters, not the dumb bells.

        Perhaps a small base circle cam?
        IDK myself. Same deal. Never encountered it.

        A solid roller in the street is a maximum effort (and expenditure) on the street. It is a little hard to justify by some point of view. A Hyd. roller, not so much, but! Often wasted (for the most part) in heavy cars. While there is a performance advantage, I normally see it wasted with full interior, spare tire, big audio equipment, etc...
        Not in lightened cars with a spartan interior.

        Since my ’00-5.9 was a roller, for me it was just a cam purchase since the rollers were reused and the heads/springs could handle the cam. The cam is small. Torque is the focus.

        A good well thought out EZ breathing solid lifter cam will work excellent.
         
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        • jeffnmo

          jeffnmo Just another Mopar Maniac FABO Gold Member

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          I'm seriously thinking of putting a solid cam (non-roller) in my 340, just not sure how big to go. All my cars when I was younger were solid cammed.

          Jeff
           
        • mderoy340

          mderoy340 Well-Known Member

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          SFT of your choice with Howard's EDM lifter works for me.
           
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          • Bodyperson

            Bodyperson Well-Known Member

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            Thanks, you guys just saved me some money and headaches. I'm just building on paper right now.
             
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            • rumblefish360

              rumblefish360 so close yet so far away

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              On behalf of the official and myself, your welcome and enjoy!
               
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              • gzig5

                gzig5 Well-Known Member

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                Deleted and started a new thread.
                 
              • rumblefish360

                rumblefish360 so close yet so far away

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                Link?
                 
              • gzig5

                gzig5 Well-Known Member

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                Rather than muddy this thread up, I decided to start a new one with my question on selecting a lifter type.
                Lifter Technology Selection
                 
              • JoeSBP

                JoeSBP RLTW!

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                Would you mind expanding on that? I have hyd. roller in my 418, but I'm fairly ignorant on this topic
                 
              • rumblefish360

                rumblefish360 so close yet so far away

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                What did you expect from Hyd. roller cam?
                Did you compare the lobes (lift rates) between Hyd. & Hyd. roller?
                Did you dyno the engine?
                Do you rev past 6K?
                What is the intended purpose of the vehicle?
                 
              • JoeSBP

                JoeSBP RLTW!

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                PO built the engine for street/strip. It’s well beyond anything I would have done honestly
                 
              • rumblefish360

                rumblefish360 so close yet so far away

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                The roller Hyd. lifter is heavy and gives up when the rpm rises high. A loose of performance occurs. At the expense of the set up, a solid roller is better and much more productive.

                Many people use a Hyd.roller thinking there going to rev to 6500+ and stomp some butt into the floor. They get very upset when there 3600+ lbs. heavy thing is loaded up with gas and the driver, now 4K plus.

                See the math? It gets worse in a stroker engine that has stock Edelbrock heads & ports. So much is left on the table while trying to move fat ass (car) down the road.

                They think it pulls but when a lesser engine stomps there hind 1/4’s into a mud hole.....
                 
              • rumblefish360

                rumblefish360 so close yet so far away

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                I’d like to add that this of what I see and speak about is thought of by the car owner as a bad ass engine they think is just about unbeatable.

                DO NOT GET ME WRONG!

                The Hyd. roller cam engine can make for a great power plant for a street strip car.
                 
              • furrystump

                furrystump Well-Known Member

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                The only thing I have to add is I run the EDM lifter. I originally thought that due to the hole being so small it would quickly become clogged and of no real use. After tearing it down at least three times for other reasons I was pleasantly surprised to find every one clear. I would use an EDM again.
                 
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