Trick Flow 240...

Big Block A body Tech

  1. inkjunkie

    inkjunkie Well-Known Member

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    ...what kind of power can be made with them on a 451? Do any of the TTI headers fit?
    Perhaps the better question is how much power will they make compared to the 270's?
    11:1 or so compression, solid roller cam kind of build. Strip car that may get driven on the street...
     
  2. 273

    273 Well-Known Member

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    My guess comes down to the build.
    Tunnel ram with 300 degree roller cam and 14:1 + cr probably hit the 2 hp per cfm.

    10:1 cr with high lift street cam around 275
    Probably 1.7 hp per cfm.

    And an in between build somewhere in between.

    Apparently around 620 hp for this relatively mild build

    Trick Flow PowerPort 240 Wedge
     
  3. AndyF

    AndyF Well-Known Member

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    • inkjunkie

      inkjunkie Well-Known Member

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      Thanks for the links. Any thoughts on any of the TTI headers fitting? I know the literature from Trick Flow states....

      "Trick Flow designed the PowerPort 240 heads to use all factory-style big block Mopar pistons, roller rocker arms, intake manifolds, and headers" and "Exhaust Port Location: Standard"

      But that doesn't mean a whole hill of nothing....
       
    • IQ52

      IQ52 Well-Known Member

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      The same horsepower Andy made with his 470 is possible with a 451. The 240 Trick Flow heads can be touched up to flow with our Edelbrock RPM heads and they have made 780+ HP on a pump gas 451.

      And yes, we have run the TTI headers on the 240 Trick Flow heads.
       
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      • AndyF

        AndyF Well-Known Member

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        TTi needs to update their website to include the Trick Flow heads. I sent them a note about it a while back but evidently they don't pay attention to my input........
         
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        • inkjunkie

          inkjunkie Well-Known Member

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          Thanks...
           
        • inkjunkie

          inkjunkie Well-Known Member

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        • AndyF

          AndyF Well-Known Member

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        • inkjunkie

          inkjunkie Well-Known Member

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          Thanks. I know I have read them in the past...brain cramp blocked from where..,
           
        • AndyF

          AndyF Well-Known Member

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          I wrote 3 articles for Mopar Action on the 470 build and then I did a couple of articles for Car Craft on the same build so you might have seen the build either place.

          I have a second 470 engine (dry sump engine) that I did for Car Craft. 470 #2 was used to test the 240 heads against the 270 heads. You can find that article on the Hot Rod website.
           
        • jamesdart

          jamesdart Well-Known Member

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          I had 451 built with the 240 heads, 11:1, we went with a solid ft, 2" tti, he didn't like my m1 for this combo but that's what I'll be running. The goal was 650.
           
        • inkjunkie

          inkjunkie Well-Known Member

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          I did speak with TTI few days ago. Woman I spoke said that TTI has never verified fitment but has sold headers to quite a few folks running the 240 heads and have yet to hear of any fitment issues. I know a couple folks have said TTI headers will work with the 240's, just wanted to verify...
           
        • jamesdart

          jamesdart Well-Known Member

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          I had asked that question on some of these trick flow threads before I bought the 240s and never got an answer from anyone. I had already modified my 2" tti to work with a B anyway.
           
        • inkjunkie

          inkjunkie Well-Known Member

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          Which rockers work with the 240's? Started looking at a few different sites and got a bit confused...

          Never mind...brain fog cleared a bit..
           
          Last edited: Aug 6, 2017
        • hosehead

          hosehead Well-Known Member

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          I just fired my 440 last night that is equipped with trick flows. I used comp magnum roller rockers and my Tti headers fit great. Much better spark plug access with the angled plugs.
           
        • TXGTX

          TXGTX New Member

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          I’m bolting my 240’s on my .040 over flat top piston 440 with a purple shaft .509 flat tappet cam and an Edelbrock performer RPM intake, 800 CFM carb and TTI 1 7/8 headers and Comp magnum roller rockers. The motor ran pretty good with the factory heads/intake/exhaust manifolds but I believe this will seriously wake it up. I built the engine 3 years ago and put 2,000 miles on it. Got tired of bone stock. I weighed my70 GTX prior to starting, it weighed 3,640 lbs. I’m hoping it’s down to 3,400 lbs. I’ll let y’all know how it runs. Compression should come in at 9.7:1. I was hoping a little more but the pistons sit down in the hole more than I remember when I built it. I can’t imagine what the compression was with the stock heads.
           
        • m79ded

          m79ded Active Member

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          I got 613 hp and 625tq using TF240 heads and a solid cam on a 451. 10.75 comp with hooker headers that needed 1 pipe slightly bent. It made 13" vacuum and was extremely easy to drive. I would recommend what Andy did a 470 would be even better. The motor revs quickly as well. The best thing is to get a light piston like a ross like I did and good rods. Good luck
           
        • rumblefish360

          rumblefish360 So close, yet so far away FABO Gold Member

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          Wow! Old thread revival!

          A good basic estimate without pushing the limits is cfm X 2 = potential HP. That would be a stout build. Not a hard core HP chase.
          But you can make more than the basic laymen’s math equation. A lot depends on how far you want to take it.

          A bad ass street machine?
          CFM X 2 = HP potential.
           
        • famous bob

          famous bob mopar misfit FABO Gold Member

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          ?? 451 x 2 h.p. = broken block if hammered often
          500c.i. 440 , x 2 =1000 h.p. another broken block !
           
        • cookietruck

          cookietruck Well-Known Member

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          what rpm were the peaks and what did the torque curve look like?
           
        • mygasser

          mygasser FABO Gold Member FABO Gold Member

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          I think you misread his reply Bob, he said cfm not ci so 240 x 2 = 480hp. :thumbsup:
          Neil.
          Ps assuming 240 refers to cfm
           
        • PRH

          PRH Well-Known Member

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          The “240” is the intake runner volume in CC’s.
          It’s not what the head flows in CFM.
           
        • mygasser

          mygasser FABO Gold Member FABO Gold Member

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          :thumbsup:
           
        • m79ded

          m79ded Active Member

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          Torque peaked @ 4200 and hp@ 5800 TQ curve was really nice came in @ 2700 and stayed up to 5700 vacuum is 12-13 @ idle and power brakes felt nice. All around a wonderful street engine
           
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