Boosted Buicks Here!

Discussion in 'High Tech for Old Iron' started by sailbrd, Sep 24, 2010.

  1. jay3000

    jay3000 Well-Known Member

    The kickdown cable on a 71 and 72 turbo 350 Skylark is actually connected the the accellerator pedal. The shift points on the tranny can also be raised bt grinding away the weights on the governor a little at a time to get the desired shift points.
    Julian likes this.
  2. James
    how on earth did you get a 600 rpm low stall on a switch pitch. thats pretty damn tight. Bob
  3. Turbo455

    Turbo455 James

    Yeah tell me about it in low stall it pulls my 800 rpm idle down to 500. That is the way it came from Jim B.
  4. Michael Evans

    Michael Evans a new project


    Made some changes to my "list" so you can update the word document.

    Your PM box is full.
  5. sailbrd

    sailbrd Well-Known Member

    duh :Dou: Thanks
  6. Michael Evans

    Michael Evans a new project

    After rereading all the posts nobody has said anything about check valves on either the power brakes or the transmission.

    I for one do not have either just wondering if most everyone does not build any boost until high gear?

    High gear is the only time it does not break the tires loose for me .

    Most of the time it is :3gears:
  7. alan

    alan High-tech Dinosaur

    The brake booster has a valve on it from the factory. I remember bench testing it to see how much pressure it would take, but I don't remember what pressure I checked it at! :error:

    (Looking at the thread linked below, I'd guess 15psi)

    I'm using a pressure regulator between the engine and the vacuum modulator. Here's a link to the thread;
  8. jay3000

    jay3000 Well-Known Member

    I have a check valve on the PCV that I snagged off of a little import in the boneyard. It was inline to the brake booster and worked perfectly. THe PCV valve will allow boost to blow by it. I bought a little inline check valve at NAPA that I use for the tranny and the vacuum canister. Works perfectly. Tranny shifts great at light pedal. The factory brake booster valve is still in place and works perfectly as is...
  9. northcorner

    northcorner Guess what I'm thinking..

    I'm getting ready to join the boosted club. I'm wondering what you guys think about compression ratios. I've always thought that 8:1 ( static) is a better choice than like say 9:1 or higher. I understand that you can usually run more boost with a lower compression. Also, should you shoot for a low dynamic compression number too? My thoughts are that with the lower ratio, you can get more air and fuel into the chamber, thus resulting in a bigger bang, so to speak. With that said, are there any quench or squish concerns I should be worried about with boost? I'll be racing only with the motor, so partial throttle and street manners are out the window on this one.

    What are your thoughts, guys?
  10. Michael Evans

    Michael Evans a new project

    The amount of input is determined by your build (and your will). This build I have so far has seen 10 PSI with the better than "stock" set up.

    as soon as I get the new short block built, it will be time to turn it up.
  11. sootie007

    sootie007 65 Skylark -455 - T350

    W o W

  12. sailbrd

    sailbrd Well-Known Member

    If you look at what the GN's run I don't see that a low dynamic compression number will help. My plan is to have a Scott Brown custom cam made because I really do not have the answers. Since you are racing only think about e85 for fuel and then you can run more compression.

    You reall need to find the people running racing Buicks. There are only about 5 people that have gone there so check my list and give those people a call. I like to learn from other peoples mistakes. :3gears:
    Julian likes this.
  13. jake csordas

    jake csordas Well-Known Member

    as far as the compression thing goes i am no expert but when i was doing the research for mine it was better and easier to use a little more compression to make power. unless you are going to run a lot of boost 9 to 1 or slightly more is fine. anything over 20 pounds of boost the motor will probably only last one pass anyway so make it worth it. from my own experience a charger does like less cubic inch. i had a 494 and a 464. the 464 was better all around and went slightly better. i do recommend a scott brown cam though. he knows how to build it to make power and keep the cylinder pressure down.
    john jr
  14. sailbrd

    sailbrd Well-Known Member

    There is one of the people to listen to!:gp:
  15. northcorner

    northcorner Guess what I'm thinking..

    Thanks for the responses guys. I'm going the turbo route. I'm surely going the Scott Brown cam route. A little information now can save a lot of wasted dollars later on, thanks again:TU: .
  16. 66larkgs

    66larkgs paul 66gs turbo nailhead

    1966 skylark gs
    401 nailhead .030 over, line honed, complete rebuild. Garret
    t67 turbo .81ar, 32x18 intercooler, areomotive a1000's pump and boost reference fuel regulator, -10an feed and return lines,exa-oil pump for oil scavenger system. tial t44wastegate vband, tial bov, CSU carb, EV carb hat, MSD 6btm box with boost reference,FAST dual wideband o2 sensors and a/f meter
    c5 corvette brakes front and rear, kore3 billet hubs, billet caliper brakets, b body spindles,
    narrowed powdered coated 9" inch rear ,detroit locker, 3:73,big bearing gm ends, moser axles tubular upper and lower rear control arms, th400 trans, custom driveshaft and crossmember,aluminum radiator,
    custom built exhaust, full length headers,
    billet specialties 18x7 front wheels and 20x9 rear wheels
    Just finishing on body work and will be hopefully painting this winter.:beer
    Julian likes this.
  17. sailbrd

    sailbrd Well-Known Member

    We need pictures!
  18. sean Buick 76

    sean Buick 76 Buick Nut Staff Member

    Here you go: skylark turbo nailhead/

  19. sailbrd

    sailbrd Well-Known Member

    Thanks for the pictures. Did not understand at first it was a rear mount single turbo so will make some changes in the table.

    What is there about Buick owners. No one can do it the same way! My advice to women... find a guy that owns a Buick and it will always be different. :laugh:
  20. 66larkgs

    66larkgs paul 66gs turbo nailhead

    i wanted this car to be different and hopefully with the paint it will be a sweet ride. It is no race car... and i didnt build it to be. i am still doing the metal work on the bumpers tucking and had to modify the front alot to hide the intercooler behind the front steel bumper. One question i have is anyone running the shockwave air ride setup? i run qa1 coil overs right now but i liked the idea of the air ride. anyone runs these? any exsperiance , pro's cons.. the qa1 are nice but i want it to be a real nice driver, so i dident know if the airride had some bennies... I will be updating my photobucket with some current pictures of the car once my lift in my house is done. hopefully next week the wiring will be done.

    66lark gs
    turbo 401 nailhead t67 rear mount

    53 r100 international,
    chopped, channeled,
    406sbc scat crank,
    .630-.630 cam 300r
    rpm ported heads

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