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Cast aftermarket 383 crank strength?

Discussion in 'The Garage' started by BigBurban350, Nov 8, 2003.

  1. BigBurban350

    BigBurban350 1/2 ton status

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    I am getting close to the time when my engine is going to be done and I found a 383 kit for $500. The only catch is it is a cast crank. I don't have hundreds of dollars to spend so this is what I am aiming for. Is the crank going to fail with the 400 ftlbs of torque running through it?
     
  2. VisionxOrb

    VisionxOrb 1/2 ton status

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    I dont think 400 lbs torque is an issue with a cast crank but reving to like 6000rpm on the stroker, that would be.
     
  3. bablazer73

    bablazer73 1/2 ton status

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    If you use quality bearings, oil pump, and such AND GET THE WHOLE rotating assembly RE-balanced, It should. Getting it balanced is key to keeping an engine from coming apart. simple vibrations, even the ones you can't feel will sends harmonics through an engine and kill it.
     
  4. Triaged

    Triaged 1/2 ton status

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    From what I have read new cast cranks are stronger than factory cast and about up there with factory forged steel. The reason is that they are now made with ductial iron that behaves more like steel than regular cast iron.

    They also often have larger fillets on the jurnals.

    From what I have heard "Scat" makes the best cast stroker cranks (for the money). They have the crank throws drilled out to reduce weight and make it possible to internally balance the motor without the need for "heavy metal". They also have larger fillets than Eagel does. You can pick up a Scat stroker crank for about $200 new.

    http://www.flatlanderracing.com/scatcrankssbc.html
    is one place to look for good prices. There is also Speed-O-Motive in SoCal that carries Scat stuff but I don't know their prices.
     
  5. BigBurban350

    BigBurban350 1/2 ton status

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    Thanks guys /forums/images/graemlins/smile.gif
     
  6. 75-K5

    75-K5 3/4 ton status

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    Hey, while you were looking at my porn, did you happen to save any? I just formatted and lost it all! /forums/images/graemlins/angryfire.gif /forums/images/graemlins/rotfl.gif
     

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