440+Good cam+Good heads=LOTS O TQ

Big Block A body Tech

  1. MRL Performance

    MRL Performance Well-Known Member

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    Here is our latest 440 build. Pretty mild, small HR cam, MP 452 straight plug heads w/mild port work(stage 1), Pump gas 9.75 to 1 compression. Nothing to serious just a well built well engineered 440. Here is the run down

    440 prepped and blueprinted
    440 cast crank 10/10 and balanced
    Speed pro flat top pistons
    MP aluminum 452 heads
    MP dual plane intake(RPM)
    MRL HR cm setup 220/228 110 LSA .550/.560 lift
    Proform 750 carb
    Aluminum roller rockers


    It ran good with the FBO ignition, had 15in vacuum at 900 idle without the vacuum advance hooked up. With the vacuum advance hooked up, it pulled 19in vacuum at idle. Ran smooth and layed the torque down.

    Peak torque was 568tq at 3450. The dyno pull was started at 2800rpm and it was already making 534tq and held 500+ all the way to peak power of 519HP at 5400rpm.

    So for a MILD 440, that's a good day 519HP and 568TQ all in by 5400rpm. It was still making 500+HP at 5800rpm, but no need to run it that high for a street machine. This engine will have a LONG Happy life in the 1968 Satellite.
     

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  2. WRB426

    WRB426 Insane 4 Mopars FABO Gold Member

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    Very nice!!! I'd be happy with that in any street car.
     
  3. 496 polara

    496 polara moparts id gch

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    Balls to the wall torque!
     
  4. tarvin890

    tarvin890 tarvin890

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    aluminum heads do wonders
     
  5. moper

    moper FABO Gold Member FABO Gold Member

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    It's not the aluminum - it's a decent package. Nice job Mike!
     
  6. tarvin890

    tarvin890 tarvin890

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    great build yes... but use iron heads and numbers go down... the advent of nice aluminum heads do wonders for these engines. i would LOVE to have a monster like that... when this ole 400 wears out i will have to keep MRL phone # handy.
     
  7. Abodybomber

    Abodybomber Breaking street machines , since 1983.....:) Legendary Member

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    Nice numbers,Mike.
     
  8. RustyRatRod

    RustyRatRod 30 Degrees Outta Whack FABO Gold Member

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    What do you base that on?
     
  9. Old Man Mopar

    Old Man Mopar Righteous Dude

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    Did you have to bush the lifter bores to use the HR camshaft?
     
  10. tarvin890

    tarvin890 tarvin890

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    is anyone actually going to say that aluminum heads dont flow better than iron? Is this not why we have buy and use aluminum heads... better performance....? If they didnt we'd wouldnt be using the aluminum for better perfomance gains.
     
  11. RustyRatRod

    RustyRatRod 30 Degrees Outta Whack FABO Gold Member

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    I think you need to read the site more.
     
  12. tarvin890

    tarvin890 tarvin890

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    Cylinder heads are a major component in building horsepower because fuel, air, and exhaust flow through them. The size and shape of a cylinder head port affects compression & flow of gases through the engine.
     
  13. tarvin890

    tarvin890 tarvin890

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    Aluminum heads will not automatically create more power than iron heads unless they flow more air and are installed on a higher compression ratio engine. In cases where you have a decent port job on a set of iron heads it is possible to bolt on a set of out-of-the box aluminum heads and lose power. Aluminum is automatically lighter but not faster.

    I STAND CORRECTED..... i will stick with iron heads.
     
  14. Old Man Mopar

    Old Man Mopar Righteous Dude

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    I like aluminum heads because, porting being identical, you can run a higher static compression ratio with aluminum which equals more power without detonation.
     
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    • tarvin890

      tarvin890 tarvin890

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      I STAND CORRECTED.....the opposite is probably true..
       
    • toolmanmike

      toolmanmike FABO Staff Staff Member FABO Gold Member

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      Nice 440 Mike. Those are some powerful numbers for the street. tmm
       
    • halifaxhops

      halifaxhops It's going to get stupid around here! FABO Gold Member

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      Hope mine pulls 3/4 of that!
       
    • MRL Performance

      MRL Performance Well-Known Member

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      Here are the dyno sheets. I love the torque, damn close to 600TQ and no stroker??? That's a Very good day!
       

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      • Darter6

        Darter6 Well-Known Member

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        Ok,, now you done it.The cast crank 440 that has been sitting in the corner for years may just have to come out and play.............
         
      • MRL Performance

        MRL Performance Well-Known Member

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        Nope, I have never bushed the bores for a HR, Only a few solid rollers in the past
         
      • RustyRatRod

        RustyRatRod 30 Degrees Outta Whack FABO Gold Member

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        Nice build Mike.
         
      • nitrojunkee

        nitrojunkee Well-Known Member

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        I agree. That and the weight savings is nice. Obviously someone who knows what they are doing can get a cast iron cylinder head to flow well. And unless you're doing it yourself, you're going to have a ton of money into them. You're going to have a good amount into any cylinder head done right, imo. Which is why I'd rather start out with aluminum, to have those benefits from the get go. But, to each their own.

        Nice little build. Shows how much thinking a little, seems to always work better than slapping the biggest baddest parts together does.
         
      • 496 polara

        496 polara moparts id gch

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        The hyd roller and the heads are where the power is.As well as a WELL MATCHED combination working together.Everything I see is complimenting each other.That would be a BEAST in an A body.
         
      • tarvin890

        tarvin890 tarvin890

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        how much is the weight savings using aluminum? 75 lbs or so? build... the good builder like MRL know where the hidden ponies are....
         
      • WRB426

        WRB426 Insane 4 Mopars FABO Gold Member

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        Just looked at the dyno sheets. 500+ tq 2800-5500 rpm. That's dam impressive.
         
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