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Getting ready to do a twin setup on a 5.3, looking for oppinions on turbo sizing.

Discussion in 'Turbo Tech Questions' started by TDmkr496, May 24, 2017.

  1. TDmkr496

    Joined:
    Dec 11, 2009
    I'm getting ready to do a twin turbo setup on my 87 Buick 5.3/4L80E swap. Engine will be a mild build with GEN 4 rods, 243 heads, LJMS stage one twin turbo cam. Trans will be a built 4L80E with Jakes 3D valve body and a Circle D triple disc converter. Not sure what I am going to do for an intake yet, might just use a truck unit for now. I would like to see 900+ RWHP on this combo at the tires.

    Currently I am looking at a set of BW S200 57mm turbos which I think will have excellent response but I believe they may be a tad on the small side.

    let me know what you guys think.
     
    TDmkr496, May 24, 2017
    #1

  2. H.P.Ranch

    Joined:
    Sep 2, 2011
    Barry Cooks twin s366's on stock bottom 5.3 blazer 8.50's.
     
    H.P.Ranch, May 24, 2017
    #2
    Jim Crawford likes this.

  3. Mnlx

    Joined:
    Sep 20, 2009
    The 200's seem small to me as well. S360, or 63's with the 68mm turbine would work well on that setup imo.
     
    Mnlx, May 24, 2017
    #3

  4. Jeremy

    Joined:
    Jun 6, 2005
    We ran twin t3 .82ar 6262's to 1017rwhp at 23psi, held power to 7500rpm (3v heads) on a boss 302 block stroked to 5.3
     
    Jeremy, May 26, 2017
    #4
    Jim Crawford likes this.

  5. Jim Crawford

    Joined:
    Mar 26, 2017
    Did you decide on turbos yet? I had VSracing 66/73 recommend to me but I'm only wanting 800rwhp. Very curious to hear which you pick.
     
    Jim Crawford, Jun 8, 2017
    #5

  6. M&M Turbochargers

    Joined:
    Jan 31, 2011
    id look at a pair of 60mm turbos
     
    M&M Turbochargers, Jun 9, 2017
    #6
    xr8tt likes this.

  7. Forcefed86

    Joined:
    Nov 24, 2005
    Look at the 72/68 .63 T4 Rev9 turbonetics clones on ebay.
     
    Forcefed86, Jun 17, 2017
    #7
    Jim Crawford likes this.
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