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Thread: Check my build..am I an idiot or pretty close?

  1. #1
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    Check my build..am I an idiot or pretty close?

    After reading and then reading some more, I think I am getting the jist of this crazy thing called turbocharging. I got 2 books that have helped alot both SA Design; How to Supercharge and Turbocharge GM LS Series and Turbo: Real World High Performance and of course this forum, theturboforums and ls1truck.
    Vehicle: 85 Chevy Full Size truck 3800lbs(maybe a little lighter when I swap some stuff around)
    Trans: built th400
    Rear: Braced 9" w/Strange Center, Detroit locker, 35 Spline Moser and 3.50 gears
    Usage: 85% street 15% strip(1-2 trips to the strip a month) 28" tall tire(DR for strip) will keep it under 6800 rpm. I want it to be reliable so I am not looking for 100% max effort. I would like to see between 6-800 rwhp and be able to run in the low 11s/high 10s
    Ok here is my parts list for my turbo build:
    6.0l Iron Block 4.030" bore
    AES 390" Stroker kit 3.825" stroke, 6.125" rods, 4.030" CP piston -13cc, roughly 9.2:1cr
    Pat G spe'd cam
    317 heads(unported will upgrade to AFR later on)
    Edelbrock Vic Jr w/6061.com elbow 92mm TB
    I will be using the truck manifolds to build the turbo system.
    Turbonetics tc78 turbo
    TIAL 60mm Wastegate
    TIAL BOV size?
    I am thinking 2.5" hot side tubing and 3" cold side(too big?)
    I will run it through an intercooler(I will have to measure the location to find out what size I can go with) Will I need meth injection too?
    For the fuel system I will already have a fuel cell and a walbro 255 pump(or should I just go ahead and drop the coin on the A1000 now) The motor will be run N/A until I gather all the parts.
    I want to run 8-10lbs on the street and then turn it up to 15lbs on the strip. Can this be done with the stock computer? Would I have to tune it to the higher boost setting or is there something I can do to switch between race and street tune?(don't know tuning yet) I am open to all suggestions on this build. the only thing that will be set in stone is the shortblock, everything else is up for suggestions.

    So am I an idiot or does it sound like a good plan?

  2. #2
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    Injection spray will probably be needed for high boost.
    A larger pump than the 255 will be needed, not necessarily an a1000, but an a1000 isn't too big. Don't skimp on the fuel system.
    -You'll need about a 75lb inj.
    Stock computer will be fine.
    You can probably get away with low boost and the intercooler, then high boost activate the meth kit.

    2.5" hotside is just fine. 3" isn't too big and not too small.

  3. #3
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    Thanks for the advice.
    Is there another brand pump that is good?
    I am thinking -8an for the feed and -6 for the return for fuel, will already have a 20 gal fuel cell.

  4. #4
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    i didn't know you had a cell, i skipped that.

    I would do the a1000 and only do it once, or a similar pump. I personally have never had an issue with them.
    If you're gonna do 60lb'ers, you might as well do the low imp inj and do them once as well.

    -8 will be plenty for the feed, go for it!
    -6 is fine for the return.

    Don't forget aeromotive filters before and after the pump.

  5. #5
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    What filter size(micron) should I use before the tank and then after? Any specific brand injectors?

  6. #6
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    Quote Originally Posted by farmtruc View Post
    Injection spray will probably be needed for high boost.

    -You'll need about a 75lb inj.
    May I ask why the 75lb inj?

    I know is better to be safe than sorry, but at 700-800HP 60lbs inj are still at 70% inj duty cycle @ 8 psi with bigger turbos.

    Will you want to keep it at or under 50% IDC?

  7. #7
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    Quote Originally Posted by softballnrd27 View Post
    What filter size(micron) should I use before the tank and then after? Any specific brand injectors?
    Most do 100m before and 10micron after.

    Quote Originally Posted by 2boostedSilverado View Post
    May I ask why the 75lb inj?

    I know is better to be safe than sorry, but at 700-800HP 60lbs inj are still at 70% inj duty cycle @ 8 psi with bigger turbos.

    Will you want to keep it at or under 50% IDC?
    If i'm doing a build that requires 60lb injectors, I skip them and go for the low imp 75lb'ers.
    Much better injector!!

  8. #8
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    but low Imp would required additional parts for the OEM PCM to handle them or not?

  9. #9
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    si, package comes with 8inj and a driver.

  10. #10
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    Quote Originally Posted by farmtruc View Post
    si, package comes with 8inj and a driver.
    you can keep your driver...I wanna drive my own truck !!!

    what about 95 High Imp Inj......would those make the same job at a lower price?

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