Dyno #'s with Trickflow Heads

Small Block Mopar Engine

  1. fishmens67

    fishmens67 Well-Known Member

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    You bought a head with similar flow #'s at 500 lift.
    A camshaft in .600 range may gain a few horsepower, but I wouldn't expect a substantial gain.
     
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    • B3422w5

      B3422w5 Well-Known Member

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      Read his post # 6. He said he figured it would at least pick up 16-20 horsepower
      I will stand by what i said.
      Agree he will gain more with different cam, etc.
      I already said that above.
      Sometimes i wonder if people actually read the thread before they comment
       
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      • RAMM

        RAMM Well-Known Member

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        Maybe 5-8 hp. Like they say in Comedy---Timing is EVERYTHING. J.Rob
         
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        • mbaird

          mbaird mbaird

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          Well then I digress ... lol
           
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          • RAMM

            RAMM Well-Known Member

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            OP clearly states that the curves looks almost identical. This means there is no meaningful change in the avg power which means the small peak changes are even less. This = a wash. This also means at the strip zero gains will be realized--maybe--but unlikely. J.Rob
             
          • Wyrmrider

            Wyrmrider FABO Gold Member FABO Gold Member

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            well the TF's leave room for growth whereas the EQ's were at the end of the road
            btw what fishmns67 just said
            without going to more duration and loosing low end and getting on the lower gear looser converter tredmill
            you might ask for converter suggestions-
             
          • jos51700

            jos51700 Well-Known Member

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            Until you see the curve, you don't know a damn thing, and it's not very often that I would say that to you, in particular.

            The two curves look almost identical to me, and there's not much of an increase. Especially that torque. But I know better.
            2015-Mustang-horsepower-and-torque-curves-1.jpg

            If fact, I'm shocked I had to say it at all. Happy Valentine's day.
             
          • pittsburghracer

            pittsburghracer FABO Gold Member FABO Gold Member

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            Throw a set of 2.08 valves,(set bowl dimensions) 600 lift cam, (at least) and more convertor and gear in that car and hold on. Don’t say it can’t be done on the street.
             
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            • flyfish

              flyfish C8H18+N2O = :-D

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              Eh....was this satire?? Its hard to read tone over the internet...but those 2 power curves show a MASSIVE increase in power.
               
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              • jimjimjimmy

                jimjimjimmy lobsterman FABO Gold Member

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                the op states there was only 3 hp increase and 6 ft of torque over the whole rpm range so that would be nearly identical to me .
                 
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                • roccodart440

                  roccodart440 Well-Known Member

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                  As far as total timing requirements. Unless it's on a dyno or in a fully dialed in chassis at the strip that goes back to back hundredths you are guessing at best.
                   
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                  • 12many

                    12many Well-Known Member

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                    Id verify how much lift you can run, and call a few of the better regarded cam companies. Don’t bother e-mailing them as only a couple of them will ever get back to you (Jones & Howard’s at least) And you asked whether Air Gap or single plane. I’ll say Air Gap. Sell the LD340 to some starry eyed vintage freak who’s just gotta have it..... will help pay for the new cam and intake!:eek:
                     
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                    • Wyrmrider

                      Wyrmrider FABO Gold Member FABO Gold Member

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                      jos
                      are those your curves?
                       
                    • jos51700

                      jos51700 Well-Known Member

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                      That is my point. If you can't read the scale of the graph, that might be 5 hp or 50. But the torque is nearly identical, it's 'just a little higher and about the same curve'.

                      OP states:

                      Says nothing about the curve....until:

                      Which is precisely why I asked if he could post 'em. Y'all are guessing until he does so because he's using marginal wording like 'almost identical' and citing peak value figures exclusively which typically (no offense to OP) are things that people unfamiliar with dyno charts interpret them.

                      I remember people stabbing cams into their Twin Cam 88 Harley's and really 'feeling it come on the cam' at 4800, with a redline coming up quick. Uh, no. That cam made less peak power and torque, and they're just feeling it come out of the huge hole in the torque curve because the tuning sucks, which feels like a powerband at that point.

                      So, OP, post 'em up. With fuel curves if you got 'em.
                       
                    • crackedback

                      crackedback FABO Gold Member FABO Gold Member

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                      Where did those power curves come from because they aren't representative of the OP's numbers. If that's desktop dyno, I bet the numbers for the EQ heads are the manufactures flow numbers.

                      IIRC, the flow numbers on Brians stuff was around 270 at .500

                      Valve lift Intake Exhaust w/1 3/4 pipe
                      .100 69 58
                      .200 141 119
                      .300 197 161
                      .400 241 184
                      .500 267 193
                      .550 271 195

                      With the cam in question the 400 flow rate is going to about where the window is likely going to be effective.
                       
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                      • jos51700

                        jos51700 Well-Known Member

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                        Those are google image's curves. My curves are perfectly flat, at the moment. As in, 0. I'm trying to convert to EFI and being mighty slow about it.
                         
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                        • Wyrmrider

                          Wyrmrider FABO Gold Member FABO Gold Member

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                          I meant are those curves real or desktop dyno
                          or from some mag article
                          from those curves
                          I see 75 hp and no drop off at 6500
                          shift at 7000 and hold on
                          reminder of the posts about timing on the TF heads
                          30-32 due to more efficient chamber
                          you can hurt the motor at 36 maybe even 34
                           
                        • 67autocross

                          67autocross A new iron curtain drawn across the 49th parallel

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                          Well at least this post puts to rest the old debate...which head material makes more power between aluminum or iron if they both flow around the same.
                           
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                          • j par

                            j par Well-hung Member

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                            Or should have had some Speedmaster heads sent to him on Black Friday for $703 and called up nitrous supply for their 150 shot $395 deal...
                            I wonder what he could have done with the $1,402 left over?..
                             
                          • PRH

                            PRH Well-Known Member

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                            If the op can’t post the sheets..... maybe he can relay what the biggest difference is in tq and hp between the two heads, and at what rpm those differences are.
                             
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                            • PRH

                              PRH Well-Known Member

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                              Imo, the overall combo isn’t going to make enough hp/ci to really exploit the difference in potential between those two heads.

                              Just like swapping the TF’s to a complete Indy cnc245 top end on that same motor wouldn’t show the potential hp difference those heads offer.

                              All we’ve learned from this test so far is....... with the EQ head combo...... the heads weren’t really the thing holding it back.
                               
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                              • j par

                                j par Well-hung Member

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                                I think that groundbreaking Revelation has been beat to death already LOL...
                                 
                              • brsmustng99

                                brsmustng99 Active Member

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                                Thanks for all the input, the OP really appreciates it!! Really just wanted to show that more expensive is not always better & aluminum is not always the way to go. Brian at IMM produces a great product with his EQ heads and I wish I had just left well enough alone. I have a 3.91 gear & 3500 stall dynamic converter. So I guess my next option to see if I can get some Bang for my buck is a bigger custom cam & a larger single plane intake. Hey at the very least I saved 100lbs in weight...lol
                                 
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                                • 67autocross

                                  67autocross A new iron curtain drawn across the 49th parallel

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                                  The car should be quicker due to the weight reduction off the front so there’s that...but so far I personally don’t see the trick flow heads as any kind of game changer in the small block world...the now defunct Air Wolf heads could have been a contender for that title.
                                   
                                • PRH

                                  PRH Well-Known Member

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                                  I haven’t seen a set of the TF SB heads in person....... however, if I were putting something together where I was looking to make 500-600hp....... and didn’t feel like having to port some heads to get there...... that’s what I’d use.

                                  On a milder 10:1 340/360(or stroker) hyd cam street motor???
                                  I’d save some $$$ and use something like bowl blended SM’s.
                                   
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