How much hp will my 331 make?

Discussion in 'Technical' started by mashori, Mar 20, 2010.

  1. cheezno6

    cheezno6 Member

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    Man the unboosted #s are good for such a low comp ratio, but damn you gotta run is some scary RPMs to take full advantage of that blower. Is that cam even suppose to make power up that high? It's also kinda weird that the volumetric ef peaks so far below the peak HP
     
    Last edited: Mar 22, 2010
  2. maverick75

    maverick75 Gotta Love Mavs!

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    that's because the AFR's are bad ass(y)

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  3. mashori

    mashori Member

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    I'm actually curious what the car will do on the dyno . . . I'll take the car to the dyno shop after the 331 is in and then i'll dyno it again with the supercharger
     
  4. cheezno6

    cheezno6 Member

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    Hurry up Man! :) I wanna build a 331 and need some ideas (no ubber $ blower though OS tunnel ram for me) :tiphat:
     
  5. cheezno6

    cheezno6 Member

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    Thats impressive with 185s

    Hey could you run a 331 with the same cam 10:1 and Eldelbrock Victor JR heads through your DD?
     
  6. maverick75

    maverick75 Gotta Love Mavs!

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    what cfm carb? 600? 650? 750? FI?
     
  7. my70mav

    my70mav Member

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    your gonna have some block trouble gettin around 550hp and some rpm,are you planning on running a main girdle?
     
  8. scooper77515

    scooper77515 No current projects.

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    For what it is worth, my dyno2000 HP rating was right at 400, and my actual dyno number was 330. So if mine is typical of how dyno2000 works, then it would be safe to subtract 15-20% from the dnyo2000 numbers and use that as a real-world flywheel estimate.

    I didn't just plug in numbers, I actually entered flow numbers for my heads, entered specific cam info, etc, to get my dyno2000 readout.

    So, that being said, dyno2000 is estimating your engine to pump out around 530 hp.

    I would expect that blower to pull those torque numbers up earlier in real life. Those seem kinda low for a blown engine.
     
  9. cheezno6

    cheezno6 Member

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    a total of 900 cfm
     
  10. cheezno6

    cheezno6 Member

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    If the peak HP is at 7,500 then you better use a world or dart block, and I'd still use a girdle with them. 7,500 rpm with 9psi of boost could cause catostophic faliure
     
  11. mashori

    mashori Member

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    I'm gonna go with 700cfm
     
  12. cheezno6

    cheezno6 Member

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    Why not 900? (post #24) I'll be running 2-450 cfm Holleys
     
  13. mashori

    mashori Member

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    it's gonna be a daily driver so I'm not worried about taking it up that high. I'll have to mess around with the cam to change the power curve down a little
     
  14. maverick75

    maverick75 Gotta Love Mavs!

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    do the same here:yup:

    just changed it to 700cfm...and updated the pics
     
  15. cheezno6

    cheezno6 Member

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    I have heard the FMS E cam works well with blowers as does some of the trick flow offerings
     

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