blown 496
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blown 496

  1. #1

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    Default blown 496

    running a 496 with a 8-71 intercooled,and two 850 demon blower carbs. will i make more hp with a 10-71 with my 850 carbs?

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  3. #2
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    Quote Originally Posted by 94 tpr View Post
    running a 496 with a 8-71 intercooled,and two 850 demon blower carbs. will i make more hp with a 10-71 with my 850 carbs?
    IMHO, i think the set-up u have is just fine ...the 10-71 is a "whole" lot of blower for that c.i.
    i would tune the chit out of it & go have fun...just my .02 cents

    FastRat

  4. #3
    Senior Member Hydroguy's Avatar
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    You won't have to turn the blower as hard to make the same boost.

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  6. #4
    steelcomp was here
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    Quote Originally Posted by Hydroguy View Post
    You won't have to turn the blower as hard to make the same boost.
    ...but it will take more power to turn the 1071 than the 871...
    JMO
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    Acts 2:38, the perfect answer to the perfect question.

  7. #5
    "It's HONDO, honey" Kyle's Avatar
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    up the overdrive on your 8? Go another 5%
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  8. #6

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    Default pump gas

    on pump gas. how much boost could i get away with on av gas?

  9. #7
    "It's HONDO, honey" Kyle's Avatar
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    Say 5 to 7 lbs to play it safe
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  10. #8
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    Quote Originally Posted by 94 tpr View Post
    on pump gas. how much boost could i get away with on av gas?


    Not sure of your static compression. but just a point of reference. My motors are from Merc racing, they are 502ci, 7.5-1 CR, 420 Mega blowers( about the same size as your 871), with big intercoolers. They run 10psi at full boost and run on 91 octane. With the motor set up right, you have a lot of hp still sitting on the table.


    Darrell.
    San Diego.

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    With Twins

  11. #9

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    Default av

    how much boost on av gas could i get away with.

  12. #10
    "It's HONDO, honey" Kyle's Avatar
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    Depends on compression. To say the least gas is actually more powerful than alcohol. The window of burning up a motor on alcohol as compared to blown gas, alcohol can be out of tune more than gas and not gernade the motor.

    I'd say NO more than 7

    Be in the 5-7 range

    3-4 if you run it wide open alot.
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  13. #11

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    Default compression

    8 in a half to 1

  14. #12
    "It's HONDO, honey" Kyle's Avatar
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    Thumbs up

    5-7 would be optimal
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