528 roots or 466 screw

Discussion in 'PSI Superchargers Tech Questions' started by drn1013rd, Sep 14, 2007.

  1. drn1013rd

    drn1013rd Member

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    1- the rule book states 528 ci for roots style blower or 466 ci for screw blowers, does anyone run this 528 roots application competively, all the blown cars i have seen are the psi screw blowers?

    2- do all bellhousings have to be titanium even if you ran a lencodrive like snyders and not a clutch in a dragster?

    3- i run my tach through a biondo delay box, will nhra allow me to do this
    if the tach is all i have attached to it?

    thanks
    don
     
    #1
    drn1013rd, Sep 14, 2007
  2. bottomdollar

    bottomdollar New Member

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    need nore info


    What class you trying to run need to know differant rules for each class Willie
     
    #2
    bottomdollar, Sep 16, 2007
  3. Will Hanna

    Will Hanna We put the 'inside' in Top Alcohol
    Staff Member

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    tad

    I'm assuming you're asking in reference to running tad.

    1. Nobody has run a roots competitively in years. Top running BAD's are running 451 to 470 motors depending on weight of driver/car.

    2. No the bellhousings do not have to be Titanium, but they do have to be certified, even with the Lencodrive. Lakewood and Browell make steel cans that are certified.

    3. No delay boxes allowed in the car.

    Hope that helps.
     
    #3
    Will Hanna, Sep 16, 2007

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