Running a retrofit hydraulic roller cam

Small Block Mopar Engine

  1. jimmer

    jimmer Well-Known Member

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    I was curious who out there is running a retrofit hydraulic cam in there s.b. mopar ?
    I have a 410 stroker finally going together after years on the shelf.
    I have a lunati solid flat tappet .
    I'm thinking of possibly switching to hydraulic roller ?
    What cam are you running ?
    How do you like it ?
     
  2. MOPAROFFICIAL

    MOPAROFFICIAL FABO Gold Member FABO Gold Member

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    Non roller block?

    Only real reliability came from using a roller la block with factory hyd roller lifters on a biklet lunati cam w/ .586 lift...with crane malonized /coated steel gear
     
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    • 72Dart6pack

      72Dart6pack Harder Better Faster Stronger.

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      I went with Hughes cam and their retro roller lifters on my 408. It's nice stuff.

      20170319_152950.jpg
       
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      • yellow rose

        yellow rose Overnight Sensation FABO Gold Member

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        I would run the HR lobes with solid roller lifters and not look back. Among other things the pushrod geometry will thank you.
         
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        • jimmer

          jimmer Well-Known Member

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          Can you school me on how it works ?
          Does that mean more maintenance?
          Like adjusting lifters ?
           
        • jimmer

          jimmer Well-Known Member

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          What are the specs on your cam ?
           
        • jimmer

          jimmer Well-Known Member

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          Yes non roller block
           
        • 72Dart6pack

          72Dart6pack Harder Better Faster Stronger.

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          This is my cam card.

          Screenshot_2017-08-20-14-11-38.png
           
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          • jimmer

            jimmer Well-Known Member

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            Current cam

            Lunati 256/268 @50 550/571 106 c
            Howard's oil faced lifters
             
          • yellow rose

            yellow rose Overnight Sensation FABO Gold Member

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            You set the lash at .002 cold so it will start. After that, you may have to check them every 5000 miles, probably can go more than that once you get comfortable.
             
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            • PRH

              PRH Well-Known Member

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              Google “hydraulic roller lifter noise”....... read a bunch of the threads that come up....... then decide if that’s really the path you want to take.

              No, they aren’t all really noisy, but it shows that’s its a very real possibility.

              Just educate yourself in that retrofit hydraulic roller cams aren’t always “roses and unicorns”.
               
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              • PRH

                PRH Well-Known Member

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                This is one of my favorites:



                There was a thread somewhere that went with this video.
                The thing that surprised me the most from that thread was....... they dynoed that motor making that kinda noise!!
                If I’d have had that thing on the dyno making that racket(and I think it made around 500hp??)....... it would have been over right then.

                I seem to recall they swapped the lifters, and maybe the cam too..... and it ended up being more normal.
                 
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                • jimmer

                  jimmer Well-Known Member

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                  Yeah that is horrible!
                  Sounds like a sewing machine!
                   
                • 512Stroker

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

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                  Do you recall?
                  Was that noiuse cause by retrofit hydraulic rollers?
                   
                • MOPAROFFICIAL

                  MOPAROFFICIAL FABO Gold Member FABO Gold Member

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                  Sewing machine is smooth, this sound like a loose un pumped lifters.
                   
                • 512Stroker

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

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                  I run a Comp retrofit roller setup in my 340.
                  The cam makes great power with the right convertor.
                  The hyd rollers suck, they are noisy and limit any real power after 6000 rpm.
                  If I did not have to remove the heads to swap them out to solid rollers they would be gone.
                  If you are not racing your car save your money, they are not worth it.
                   
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                  • 67 gt

                    67 gt A Wog boy who loves his Mopars ! FABO Gold Member

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                    Jimmer I use the Hughes retro solid lifters motor in my LA 360 stroker has done 11k . No issues at all , when I pulled the engine due to rear main leak I inspected cam lobes while the sump was off . All lobes looked good no wear mind you I do have it idling @ 850rpm to allow some splash and use a quality synthetic oil with zinc .I only adjust if I can hear any out of sync. Once they are adjusted they are quiet . On occasions of got to really listen as the injectors are more louder than the rockers and can throw you off.
                     
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                    • PRH

                      PRH Well-Known Member

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                      I’m pretty sure the video goes with these threads:

                      No oil to rockers but have oil to lifters what rmp to flow shafts with all new stuff

                      HELP!!! Hughes Retro Fit Roller Lifters Problems

                      Like I said, my main takeaway from this is....... this type of shit can happen.

                      I think there was recently(this year?) another thread about someone having one lifter that just wouldn’t pump up.
                      They finally got curious enough to pull the offending lifter apart, only to find the feed hole coming through the body wasn’t drilled all the way through.
                      No oil getting into the lifter.

                      I wouldn’t be surprised if it was something similar affecting all 16 lifters in that video.
                      That’s what it sounds like to me....... 16 empty hyd lifters.
                       
                      Last edited: Nov 26, 2020
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                      • 67 gt

                        67 gt A Wog boy who loves his Mopars ! FABO Gold Member

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                        I use the ball to ball pushrods with oil through
                         
                      • CRUZE 418

                        CRUZE 418 FABO Gold Member FABO Gold Member

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                        I have a Howards hyd roller in my 418. Special ordered by Mike at B3 Racing, he spec'd the cam and Morrell tappets. You might give him a call. I haven't had any issues with the cam. Lift is in the 550 range, duration in the 220's.
                         
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                        • LJ67barracuda340

                          LJ67barracuda340 Well-Known Member

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                          or the push rods haven't been clearanced,, contacting the cyl head..
                           
                        • LJ67barracuda340

                          LJ67barracuda340 Well-Known Member

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                          I run this same cam with hyd rollers. 67 cuda with a 340 and 1.6 rockers in Eddy heads and it sounds like the OE 273 commando would sound like with its solid cam. 16000 km and haven't adjusted it for 2 seasons. maybe a check up this winter. P.S. I've seen 6700 on the tell tail.
                           
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                          • Oldmanmopar

                            Oldmanmopar Going left turning right FABO Gold Member

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                            KoiPond-fshDo-Koi-have-teeth-390x268.jpg
                             
                          • furrystump

                            furrystump Well-Known Member

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                            Be careful that the lifter does come to far up or down and uncover the oil band. This results in low oil pressure. On LA blocks the depth of the chamfer on the lifter bore is very inconsistent. Tubing or bushing solves the problem.
                             
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                            • CRUZE 418

                              CRUZE 418 FABO Gold Member FABO Gold Member

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                              That is one of the reasons for going through Mike at B3 Racing. Before you just go and buy a cam and paint yourself into a corner, call him. Mike will special order a hyd cam and tappets for your application. You will have to special order your pushrods, rocker arm type, and don't forget the geometry kit. I also have Trickflow heads. It's almost a like putting a puzzle together, you need the correct pieces, not pieces from another puzzle that don't fit.
                               
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