1. moparstud440

    moparstud440 Well-Known Member

    Messages:
    410
    Likes Received:
    152
    Joined:
    Aug 13, 2005
    Location:
    Keymar, MD
    Local Time:
    2:42 AM
    Looking to upgrade my rocker arms and shaft from the stock 273 ones. Is a race only engine but only sees 6000 rpm and has under a 600 lift cam. Been looking at the Mancini Rocker arms and they have them on sale right now for $450. Anyone ever have any issues with these? Is there another rocker arm setup that is better bang for the buck?
     
  2. rumblefish360

    rumblefish360 So close, yet so far away FABO Gold Member

    Messages:
    41,100
    Likes Received:
    12572
    Joined:
    Jun 21, 2005
    Location:
    New York, on a Island
    Local Time:
    3:42 AM
    A better bang for the buck? I don’t think so price wise. That’s a smokin deal really. Eye balling a set myself.
     
    • Agree Agree x 1
    • nm9stheham

      nm9stheham Well-Known Member

      Messages:
      12,090
      Likes Received:
      3959
      Joined:
      Dec 20, 2013
      Location:
      Waynesboro, VA
      Local Time:
      3:42 AM
      Anyone know if these Mancini rockers use needle bearings or are they solid AL or bushed?
       
      • Agree Agree x 1
      • rumblefish360

        rumblefish360 So close, yet so far away FABO Gold Member

        Messages:
        41,100
        Likes Received:
        12572
        Joined:
        Jun 21, 2005
        Location:
        New York, on a Island
        Local Time:
        3:42 AM
        I’d call Mancini and ask, but for the price, I doubt there rollerized on the shaft. It’s worth the call IMHO.
         
      • toolmanmike

        toolmanmike FABO MODERATOR Staff Member FABO Gold Member

        Messages:
        58,902
        Likes Received:
        46047
        Joined:
        Jan 18, 2006
        Location:
        Iowa
        Local Time:
        2:42 AM
        When they rollerize them on the shaft do they use the stock diameter shaft?
         
      • rumblefish360

        rumblefish360 So close, yet so far away FABO Gold Member

        Messages:
        41,100
        Likes Received:
        12572
        Joined:
        Jun 21, 2005
        Location:
        New York, on a Island
        Local Time:
        3:42 AM
        I don’t think so. 99% of the time I see the same diameter listed within a .001. Other companies I have noted in the past have changed the diameter of the shaft for use with THERE rockers, so that’s a set purchased together.
         
        • Thanks! Thanks! x 1
        • toolmanmike

          toolmanmike FABO MODERATOR Staff Member FABO Gold Member

          Messages:
          58,902
          Likes Received:
          46047
          Joined:
          Jan 18, 2006
          Location:
          Iowa
          Local Time:
          2:42 AM
          I like the looks of the Comp rockers. I don't know much about them though. They look strong and less bulky.

          comp rockers.jpg
           
          Last edited: Sep 5, 2019
          • Like Like x 2
          • Agree Agree x 1
          • rumblefish360

            rumblefish360 So close, yet so far away FABO Gold Member

            Messages:
            41,100
            Likes Received:
            12572
            Joined:
            Jun 21, 2005
            Location:
            New York, on a Island
            Local Time:
            3:42 AM
            Harland Sharp has always had that style of body.
            FWIW....

            My old Comps below
            2ED88A6D-CEEB-4531-9537-035D3B9284E8.jpeg
             
            • Like Like x 2
            • toolmanmike

              toolmanmike FABO MODERATOR Staff Member FABO Gold Member

              Messages:
              58,902
              Likes Received:
              46047
              Joined:
              Jan 18, 2006
              Location:
              Iowa
              Local Time:
              2:42 AM
              Studley, are you looking at these? Mancini Racing Aluminum Roller, 1.5 Ratio
               
            • perfacar

              perfacar Well-Known Member

              Messages:
              1,092
              Likes Received:
              285
              Joined:
              Mar 1, 2006
              Location:
              renton,wa
              Local Time:
              12:42 AM
              those are Harland sharps, no roller bushings. roller tips though. we've used them . they work quite well. worth having.
               
              • Like Like x 2
              • moparstud440

                moparstud440 Well-Known Member

                Messages:
                410
                Likes Received:
                152
                Joined:
                Aug 13, 2005
                Location:
                Keymar, MD
                Local Time:
                2:42 AM
                • Like Like x 2
                • 73smallblock

                  73smallblock Well-Known Member

                  Messages:
                  106
                  Likes Received:
                  49
                  Joined:
                  Nov 4, 2015
                  Location:
                  PA
                  Local Time:
                  3:42 AM
                  I have them, they are not rollerized, Just solid aluminum. I have yet to have any issues. Run them with a .590 Mopar cam.
                   
                  • Like Like x 1
                  • pittsburghracer

                    pittsburghracer Well-Known Member

                    Messages:
                    5,197
                    Likes Received:
                    9585
                    Joined:
                    Apr 20, 2016
                    Location:
                    Freeport, PA.
                    Local Time:
                    3:42 AM
                    I’ve found some killer deals on new and used Harlan Sharp rockers over the years and never have had an issue with one and I run the heck out of my stuff. I picked up one new set on EBay for 300.00 with shafts. I probably have 5 sets of 1.5 and 1.6 ratio on my shelf so my son should be set for years.
                     
                    • Like Like x 2
                    • nm9stheham

                      nm9stheham Well-Known Member

                      Messages:
                      12,090
                      Likes Received:
                      3959
                      Joined:
                      Dec 20, 2013
                      Location:
                      Waynesboro, VA
                      Local Time:
                      3:42 AM
                      That sounds really good. About as good a deal as I know of for something known good.
                       
                    • Wyrmrider

                      Wyrmrider Well-Known Member

                      Messages:
                      3,611
                      Likes Received:
                      1748
                      Joined:
                      Sep 5, 2016
                      Location:
                      los angeles
                      Local Time:
                      12:42 AM
                      Just do not run "hard chrome" shafts with needles on the shaft
                      needles need a deep case hardened shaft
                      I know Mopar just uses surface induction hardening on post 8 3/4 axles, but with HD use they wear through also
                      many "hard chrome" shafts are just flash chrome
                      shafts Brinell >>needles wear through,> break> disaster
                      Hard chrome is grind>copper> nickel" grind> chrome chrome is not thick nickle does the work
                      Hard chrome is for stock, iron, bronze bushing or even with Al directly on the shaft
                      factor in a B3 kit with those roller tips else just use Iron rockers and be happy
                       
                      • Like Like x 1
                      • rumblefish360

                        rumblefish360 So close, yet so far away FABO Gold Member

                        Messages:
                        41,100
                        Likes Received:
                        12572
                        Joined:
                        Jun 21, 2005
                        Location:
                        New York, on a Island
                        Local Time:
                        3:42 AM
                        Good info Wyrm, thanks.
                         
                      • flyfish

                        flyfish C8H18+N2O = :-D

                        Messages:
                        2,339
                        Likes Received:
                        925
                        Joined:
                        Apr 16, 2007
                        Location:
                        Indy
                        Local Time:
                        3:42 AM
                        I personally would just use the newer style of Comp Pro Magnum rockers. They can handle just about anything.
                         
                      • furrystump

                        furrystump Well-Known Member

                        Messages:
                        1,302
                        Likes Received:
                        844
                        Joined:
                        Nov 13, 2004
                        Local Time:
                        8:42 AM
                        I have had good luck with the last generation of the comp pro magnum rockers. I have no idea geometry wise, but fit, finish, and longevity have been fine. They also are not that much heavier that an aluminum rocker. If I was in the market for a set I would probably contact b3 racing and pay more attention to the geometry.
                         
                        • Agree Agree x 1
                        • Wyrmrider

                          Wyrmrider Well-Known Member

                          Messages:
                          3,611
                          Likes Received:
                          1748
                          Joined:
                          Sep 5, 2016
                          Location:
                          los angeles
                          Local Time:
                          12:42 AM
                          Exactly right furry
                          the center of the roller is in a completely different place than the face of a stock or iron rocker, throws the rocker angles off from closed to every valve lift
                          changed rocker angles changes the effective ratios
                          cams are not designed for this, and can't be
                           
                          • Agree Agree x 1
                          • Krooser

                            Krooser Reform School Graduate

                            Messages:
                            3,152
                            Likes Received:
                            2658
                            Joined:
                            Jul 19, 2015
                            Location:
                            Central Wisconsin
                            Local Time:
                            2:42 AM
                            Total waste of money unless you don't have any stock rockers you can use. Little reduction in friction. Ratios are usually all over the place.

                            Yes I have used them... I have ductile iron and T&D for my race motor. I'll use stock ones on my Gen III Hemi if they work OK.

                            The cast Mopar and Crane rockers are good. The others are just shiny.

                            YmMV.
                             
                            • Agree Agree x 1
                            • MOPAROFFICIAL

                              MOPAROFFICIAL Well-Known Member

                              Messages:
                              7,943
                              Likes Received:
                              7143
                              Joined:
                              Jun 1, 2016
                              Location:
                              Beach
                              Local Time:
                              12:42 AM
                              • Thanks! Thanks! x 1
                              • 72Dart6pack

                                72Dart6pack Harder Better Faster Stronger.

                                Messages:
                                4,453
                                Likes Received:
                                4715
                                Joined:
                                Feb 1, 2016
                                Location:
                                Roseville Michigan
                                Local Time:
                                3:42 AM
                                Needle bearings on the rocker arm shaft? Yikes. No thanks. But hey it's your motor...
                                 
                              • rumblefish360

                                rumblefish360 So close, yet so far away FABO Gold Member

                                Messages:
                                41,100
                                Likes Received:
                                12572
                                Joined:
                                Jun 21, 2005
                                Location:
                                New York, on a Island
                                Local Time:
                                3:42 AM
                                Directed to whom?
                                 
                              • beanhead

                                beanhead Well-Known Member

                                Messages:
                                279
                                Likes Received:
                                302
                                Joined:
                                May 21, 2017
                                Location:
                                wackyfornia
                                Local Time:
                                12:42 AM
                                Mancini's are made by harland-sharp, roller tip only, and not bushed. No needle bearings on the shafts. I'm using a set on a 440 and they are good so far, adjustment stays put. Geometry needed some help, like with pretty much any aftermarket rocker and cam combo..
                                 
                              • Wyrmrider

                                Wyrmrider Well-Known Member

                                Messages:
                                3,611
                                Likes Received:
                                1748
                                Joined:
                                Sep 5, 2016
                                Location:
                                los angeles
                                Local Time:
                                12:42 AM
                                aluminum bodies directly on non chrome shafts tend to gall/ smearing
                                I do not remember using al directly on heat treated shafts
                                in either case oiling I would think banana groves
                                spring pressure related?
                                I just used bronze bushings
                                and rocker arm specialists in Nor cal do a great job
                                 
                              1. This site uses cookies to help personalize content, tailor your experience and to keep you logged in if you register.
                                By continuing to use this site, you are consenting to our use of cookies.