Brad 5 heads

Discussion in 'PSI Superchargers Tech Questions' started by Hank, Jan 16, 2012.

  1. Hank

    Hank New Member

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    Does any one have flow bench numbers for Brad 5 Fatheads.
    engine shop guy needs to know.
     
    #1
    Hank, Jan 16, 2012
  2. Racer22

    Racer22 New Member

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    Brad 5 Head Flow Figures

    Hank,
    These figures were taken by an independent at 28" flow, for your reference:
    .100" Int = 74.55 Exh = 50.31
    .200" Int = 141.84 127.34
    .300" Int = 237.80 223.87
    .400" Int = 326.52 293.97
    .500" Int = 402.29 329.82
    .600" Int = 449.83 347.02
    .700" Int = 472.99 352.76
    .800" Int = 480.66 358.50

    Untouched head porting, older set using 4.375" bore.
    They make so much power we don't know what to do yet.
    This is all you need to know.
    Good luck.

    Hank Wilko
     
    #2
    Racer22, Jan 17, 2012
  3. Will Hanna

    Will Hanna We put the 'inside' in Top Alcohol
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    flow

    a conventional suck through flow bench will produce different numbers than a blow through bench.
     
    #3
    Will Hanna, Jan 18, 2012
  4. TWD

    TWD Blown alky

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    So what's the answer then? (Apart from 'enough' of course.)
    Curious minds want to know....
     
    #4
    TWD, Jan 20, 2012
  5. SoDak

    SoDak Active Member

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    standard

    Assuming more and more people are getting/building these "blow through" benches,,,

    is a "standard" emerging for them, such as 28" became the standard for suck through air flow benches, is there one for blow through?

    Possibly it is 45 psi or ???
     
    #5
    SoDak, Jan 21, 2012
  6. Hank

    Hank New Member

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    This will be for a non-blown naturaly asperated application. I'm thinking that conventional suck through bench numbers will be what I'm needing.
    Thanks for the info.
     
    #6
    Hank, Jan 22, 2012
  7. fed-west

    fed-west Member

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    oops, mistake.
     
    #7
    Last edited: Jan 22, 2012
    fed-west, Jan 22, 2012
  8. Will Hanna

    Will Hanna We put the 'inside' in Top Alcohol
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    a/f model

    One of the A/F head models will probably be better suited for your purpose then. They have much smaller runners and better velocity. There is a guy trying to sell a set of BAE 6 A/F runner heads on the classifieds.
     
    #8
    Will Hanna, Jan 23, 2012

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