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Upgrading from S400-74 to S400-80 or 88

Discussion in 'Turbo Tech Questions' started by ltd351, Jul 26, 2010.

  1. ltd351

    Joined:
    Feb 3, 2005
    351 cubes, 2V clevo iron heads, (242/231) solid flat tappet, 6500rpm, glide with 3500rpm conv, 3.5 rear, 8.5 to 1 static, on propane.


    Cars making 730rwhp @14.5psi with the 74mm unit, looking for 1000rwhp, tossing up the 80mm or 88mm, cost and setup changes (converter) in mind, like to use the 80mm if it will do it, just not 100% sure it will go 1000rwhp+, so after some feedback from others....comes on at 3500rpm now, bit concerned the 88mm will be well over 4000rpm.

    Any input from others using the 80mm or 88mm would be great.
     
  2. ltd351

    Joined:
    Feb 3, 2005
    83 sounds good.

    The current unit has the 96mm turbine, 1.32 rear.
     
  3. ltd351

    Joined:
    Feb 3, 2005
    Thanks for your help mate.
     
  4. turbonova70

    Joined:
    Sep 8, 2007
    Its not really going ot cost you anymore to go with the 88 and then that leaves you room to grow down the road. Let me know if i can be of any service to you. :2thumbs:

    Thanks
    Chris
    www.customracingturbos.com
     
  5. ltd351

    Joined:
    Feb 3, 2005
    Price difference from 80mm to 88mm is large from what Ive seen.
     
  6. turbonova70

    Joined:
    Sep 8, 2007
    To buy new yes. To have your S400 upgraded the prive is pretty close.
     
  7. 4SFEDZ

    Joined:
    May 20, 2008
    what would the spool and power difference be between the 80mm and 88mm, isnt there like a 92 or 3mm availible not?
     
  8. JZ 97 SS 1500

    Joined:
    Jan 29, 2003
    We make the units with the 92mm turbine wheel. Also the 82/83 comp wheel is good for 126lbs/min, the 80 is good for 119lbs/min and the HP88 flows 130+lbs/min. Spool up is about 300 rpms more for the 88.
     
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