Twin Turbo '70 GS

Discussion in 'High Tech for Old Iron' started by Bent6, Sep 9, 2010.

  1. Bent6

    Bent6 The Vanilla Gorilla

    Here ya go Dan. I may drop this thread since there doesn't seem to be a lot of interest over here. Lot of trouble keeping multiple threads updated. It's on and as well. Anyway - heres where we are now.:laugh:

    Finally have some pics of the bullet. It's loaded on the dyno - waiting on the blowoff valve transition from the intercooler to the throttle bodies to get back from the polisher - supposed to have it first of the week. Also waiting on a jackshaft from March for the serpentine pulley system. The theme of this entire build has been hurry up and wait :cool:. I should have some #s to post next week............................

    Front view :eek::eek::eek:

    Liquid intercooler - 6" thick core should get the job done.

    Custom pan for crossmember clearance......yeah, yeah, yeah - I know - a bowtie:af: :bla:

    Jesel shaft mounted rockers

    Here's a shot of the new throttle linkage to correct an issue from earlier. Has the idle and full throttle stops machined in as well as provisions for the TPS sensor - all in one piece.

    Anyone who knows me can tell you I'm a wiring fanatic - this should fit right in. Custom Mil-Spec connector for all 16 injectors and all sensors except for the coils. Coils and magnetic pickups will be in a separate harness to minimize noise.
  2. jay3000

    jay3000 Well-Known Member

    Almost 5000 people have looked at the thread.. We're just speachless.. Please don't drop it unless it becomes a big hassle..
  3. breakinbuick11

    breakinbuick11 Platinum Level Contributor

    what Jay said! I love those wheels!
  4. Buick#455

    Buick#455 Well-Known Member

    I agree, tons of interest in this Build. Keep up the post and the GREAT Work.:gp:
  5. Bent6

    Bent6 The Vanilla Gorilla

    After all the delays waiting on parts, scheduling conflicts to actually get it on the dyno, having to pull it back off the dyno to find an oil pressure problem, not to mention 4 throttle linkage redesigns/changes, 2 injector changes to get the DC under 100, and 1 sheared off trigger wheel, we finally are starting to get somewhere with this thing. Needless to say, it has not been easy so far but at least it will be ironed out before it goes in the car.

    So far we're at 1400hp @ 6300rpm with 994ft/lbs @ 3000 on only 18psi. We've only been running it to 6300 while we're doing the development pulls. It idles like a kitten and spools almost instantly. So far it is exceeding our expectations. We set it up to run in the 35psi range on kill so there's PLENTY more to come. Now that all the little issues seem to be ironed out the plan is to lean on it Monday. Stay tuned..........

    Here it is loaded on the dyno and decked out with all the bling including AC and PS. There's so much crap hanging off this thing I don't think you could tell it's not a Buick if it weren't for the valve covers.

    Julian likes this.
  6. roboteq-1@hotma

    roboteq-1@hotma 76 T Top

    Dude- that is just plain sick. I'll even forgive the chevy core.:beers2:
    double the boost = double the HP, I theenk, so....2800 HP & 2k torque??! If you can get it to hook you need to start racing Lambos for pinks.
    Just Awesome!!:TU: :TU:
  7. 68 LeSabre 4dr

    68 LeSabre 4dr Well-Known Member

    Very nice work everywhere I look ! :eek2:

    Great Job !!!!:beers2:
  8. theone61636

    theone61636 Well-Known Member

    Especially, if you paint it all Buick Red...hint hint. Looking great BTW!
  9. sean Buick 76

    sean Buick 76 Buick Nut Staff Member

    Very cool stuff! I would love to get my chassis all beafed up like yours, I even have lots of spare cro-mo tubing.

    This inspires me to get my turbo skylark done!

    I really like everything about the turbo setup as well as the fuel injection. What brand is the intake and anteater looking intake tubing?
  10. jay3000

    jay3000 Well-Known Member

    Holy crap.. I think that about says it all..
  11. Justa350

    Justa350 I'm BACK!

    That engine cracks me up, in a good way. Horrifying power potential, blinged out so much you would be happy to eat of any part of it, AND A/C and power steering!!?? GREAT design work, every bit of it.
  12. Bent6

    Bent6 The Vanilla Gorilla

    We wrapped up the dyno session. It starts clean, idles smooth, and spools almost instantly.

    1600 hp @ 6000 RPM
    1430 ft/lbs @ 4800 RPM

    This was a conservative tuneup with only 22 psi boost. We were shutting the pulls off at 6000 RPM just to be safe. To give an idea of the full potential, the engine is set up to run in the 35 psi range. We didn't even make it breathe hard.

    It starts pulling off 1000 ft/lbs at just under 3700 RPMS.

    It made 930 hp with a measley 7 psi boost on pump gas and 13 psi put it at 1207 hp.

    A switch to 88mm turbos will pick it up an easy 500 hp putting it over the 2k hp mark but in it's current trim it should be very streetable which is the primary goal - for now. :laugh:

    Love it or hate it, these LS motors are simply awesome.
    Last edited: Apr 21, 2011
    Julian likes this.
  13. 68riviera430

    68riviera430 BRRRRAAAAP!

    amazingly ridiculous.
    and I love those wheels!!!
  14. 2tone-t

    2tone-t 73 Stage 1

    That's alot of chrome. You could use that engine as a mirror to help you shave hahaha. That's gonna be a scary car at the track hahaha.
  15. sean Buick 76

    sean Buick 76 Buick Nut Staff Member

    Wow great numbers!:beers2:
  16. gmcgruther

    gmcgruther Well-Known Member

    I was wondering? Did Morris racing engines do that engine? They have the same intake and set up as you do!! That engine makes good power.
  17. Bent6

    Bent6 The Vanilla Gorilla


    For those interested........

    Haven't updated this thread in a while. We are in the home stretch of the fabrication stage of the build now.

    Cantilver rear shock setup - first pic is looking through the fender - small strut on right is for mockup of where the shocks go inside the trunk - strut running down through the floor connects the cantilever to the rear end housing. The wheel tubs will be carbon fiber - they will go in last so we don't damage them during fabrication.



    Fuel/water cells - cell on left is water tank for liquid intercooler with pump built in, large cell in center is for pump gas for the primary injectors, and the cell on the right is for the race fuel to the secondary staged set of injectors.


    Engine in car with liquid intercooler mounted


    Engine in car with charge piping completed


    Car on the ground at what will be close to the final ride height with the drag wheels/tires.

    Julian likes this.
  18. Justa350

    Justa350 I'm BACK!

    Re: Update

    Wicked. I can't imagine how many tanks of argon have gone into this thing! Killer fabricating everywhere.
  19. GNandGS

    GNandGS Well-Known Member

    Enjoyed the pics
  20. rollerball

    rollerball Well-Known Member

    All the good stuff from Nelson Racing....i wonder how hard it is not to kill yourself with a powerlevel that high....insane!

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