Small Block Head Flow Chart

Mopar Racers Forum

  1. 12swinger

    12swinger Well-Known Member

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    Yes sir
     
  2. 70aarcuda

    70aarcuda Master Hoader of SBM FABO Gold Member

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    I will post of a picture of the eddy head as the SM are bolted onto a block at this time....IMM did the work So i would assume that the chamber was reworked for the larger valve.
     
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    • PRH

      PRH Well-Known Member

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      OOTB Ede RPM assembled head #60779.
      4.00” bore, 28”, no tube on ex-

      Lift———in/ex
      .100—— 64/49
      .200——126/97
      .300——185/133
      .400——227/156
      .500——250/166
      .600——253/169
       
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      • TurboGLH

        TurboGLH Well-Known Member

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        Cast SM flowed by @pittsburghracer

        Lift—- in/ex
        .100— 55/37
        .200—131/100
        .300—185/142
        .400—235/164
        .500—240/176
        .600—246/180
        .700— 259/185
         
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        • PRH

          PRH Well-Known Member

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          CNC’d SM head-
          OOTB vs valve job with back cut valve, and minor blend-

          28” test pressure, 4” bore:

          A-OOTB
          B-Valve job

          Intake ports:
          Lift———A/B
          .100— 64/67
          .200—126/132
          .300—166/191
          .400—206/232
          .500—242/262
          .600—271/275
          .700—284/281

          Exhaust ports:
          Lift—— A/B
          .100— 49/55
          .200— 95/102
          .300—132/137
          .400—163/170
          .500—179/188
          .600—187/192
          .700—190/194
           
          Last edited: Jan 10, 2020
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          • oldkimmer

            oldkimmer FABO Gold Member FABO Gold Member

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            PHR, so can we assume an untouched CNCed head would flow 250 or so? Thanks. Kim
             
          • toolmanmike

            toolmanmike FABO Staff Staff Member FABO Gold Member

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            See the chart on page 1. I think the cnc head is there.
             
          • TurboGLH

            TurboGLH Well-Known Member

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            As of today the chart is up to date with every post that had flow data.

            I had to give up on graphing all the numbers, too many to be manageable, but if you open the chart on a computer it's easier to see all the data
             
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            • PRH

              PRH Well-Known Member

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              The “OOTB” test(coulumn A) is just as it came ootb.
              That is the CNC ported head.

              The OOTB unported head is in the 250 range(on my bench).
               
            • pittsburghracer

              pittsburghracer Well-Known Member

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              And probably a little turbulent too. At least it was on mine at .600-.700.
               
            • rumblefish360

              rumblefish360 So close, yet so far away

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              Because @yellow rose asked...

              My (Long Stalled) W5 project. Ti 2.08/1.60 valves.
              Heads ported by Brett Miller (Thank you) flower on a 4.125 bore.
              Re flow checked by ElSasser Racing Engines on a 4.03 bore. (Which is closer to what I’ll actually have unless Santa Clause drops off a Ritter or MP race block.)

              Brett took them until one of the ports gave up the ghost and broke through. Epoxy was used in 1 port. No sense in going any more forward.

              Looking to use my Ultradyne NF64/ F69 SFT in a stroker.
              45046926-72F4-4718-8EA3-90B367DFBA88.jpeg

              61C2FC09-A47D-4468-A865-A78FCF414541.jpeg

              500731D1-64AE-44BD-894D-AF7F8C36220E.jpeg

              B0E42FB7-F779-4F52-9241-E759B9ED4A46.jpeg

              41D424BD-2123-4E10-91DD-3DC379BAF699.jpeg

              37D4542D-5EEE-4550-8D8C-37650D6FA139.jpeg
               
              Last edited: Jan 12, 2020
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              • rumblefish360

                rumblefish360 So close, yet so far away

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                Just some eye candy....
                24F6B35C-8B5F-4B14-AE41-D41AA6E74072.jpeg DD11436E-2F06-4D79-9132-92F357E7567E.jpeg ED603816-03AC-4757-8823-DA4210AA3FF0.jpeg 8DF36BE5-1F67-4096-BB39-C45BB2F46B90.jpeg
                 
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                • oldkimmer

                  oldkimmer FABO Gold Member FABO Gold Member

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                  That’s sure is nice parts Rob. Kim
                   
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                  • rumblefish360

                    rumblefish360 So close, yet so far away

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                    Thanks. Been stalled for years. It didn’t help when the wife got this ‘67 ..... and the said “Build me a engine!”
                    (And the rest of the freakin drive train...!!! )

                    0D1C5825-4C9E-4157-8DDF-BA19CB09559C.jpeg
                     
                    Last edited: Jan 12, 2020
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                    • TurboGLH

                      TurboGLH Well-Known Member

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                      I've added a second page to the chart with the heads sorted by type, it was getting fairly long and required a bunch of scrolling to the side to see everything.

                      Looking for feedback one vs the other, or any changes that would help with making it easier to view and compare.

                      Again, best viewed on a PC, phone screens with always be a limit, but I know lots of people use their phone first, so feedback based on mobile viewing is appreciated too.
                       
                      Last edited: Jan 11, 2020
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                      • stixx

                        stixx Well-Known Member

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                        Great job Turbo! I also like the second chart with the heads sorted by type, makes it a bit easier to navigate around.
                        You always will have to scroll when you want to compare heads...

                        :thumbsup:
                         
                      • MOPAROFFICIAL

                        MOPAROFFICIAL Well-Known Member

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                        • rumblefish360

                          rumblefish360 So close, yet so far away

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                          Ultradyne NF lobe (Harolds) NF64/NF/69
                          The cam card is not in front of me, so, IIRC, .620/.640 lift.
                          The heads actually have my W2 rockers on top.
                          I’d like to get a Jesel set up in a 1.6 rocker.
                           
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                          • SwedishViking

                            SwedishViking Well-Known Member

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                            Got my w5s back today, was hoping for better flow numbers.

                            IMG_20200215_161727.jpg
                             
                          • rumblefish360

                            rumblefish360 So close, yet so far away

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                            Do you know in what bore size the head tested at?
                            Was there any mention of the port going turbulent?
                            Did the head require epoxy?
                            Did you mention your valve sizes?

                            I wouldn’t be to upset. That’s enough flow right there for some serious HP. Plus the head ports are still moving some pretty good air past the peak. If you were so inclined to continue lifting the valve, you will still be making more power.

                            The only 2 drawbacks to the W5 head is the possible poor casting ether turning the head into water sprinklers (leaking) and/or not being able to be ported out to some of the reported superb flow numbers that have been done. Then the expensive rocker arm set up even though it is seriously superior to other offerings, which has excellent dividends, it’s just pricey as I said. Though if it is a race car, it would be worth it. Street car? Ehhhh, owner’s call.

                            Again, I understand being disappointed with the flow results but they show well enough for some ass kickin.
                             
                          • toolmanmike

                            toolmanmike FABO Staff Staff Member FABO Gold Member

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                            They sure are pretty! It's fun to look down the intake ports and not have to look past the pushrod pinch!
                             
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                            • rumblefish360

                              rumblefish360 So close, yet so far away

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                              I agree and that’s what makes these heads (W2/5) worth it. A larger unobstructed port window (Or a door to allow more people in) than the LA head and it’s replacements.

                              Like Swedish Viking, I was hoping for more cfm to help out a large(r) cubic inch engine.
                               
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                              • MOPAROFFICIAL

                                MOPAROFFICIAL Well-Known Member

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                                Choose the cam wisely, the exhaust is frisky .100-.300ish ,watch the overlap.
                                Numbers are not bad. Fatter down low? Could be. But they are good numbers.
                                Good flow rate as it lifts.
                                Its flowing below 180cfm @.300 that would be not so good.
                                 
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                                • SwedishViking

                                  SwedishViking Well-Known Member

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                                  The flowing was done with a bore of 4,10 and with 2" exhaustpipe.
                                  Well we will see what kind of cam it gets. Roller or flat.
                                   
                                • 70aarcuda

                                  70aarcuda Master Hoader of SBM FABO Gold Member

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                                  I have a set of Eddy Magnum heads that were ported looks like 10 yrs ago...4 files...stock intake...stock exhaust and ported intake and ported exhaust...
                                  These were done in Carson City NV.
                                   

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