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Boosted Buicks Here!

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

  1. offbrand Racing

    offbrand Racing Platinum Level Contributor

    Love the last line....so true for many companies.
     
  2. jake csordas

    jake csordas Well-Known Member

    you are correct. ordered my carb and they suggested a 750 blow thru. I ordered and 850 and it is still not enough. lol
     
  3. Michael Evans

    Michael Evans a new project

    Have an Aeromotive with boost reference and wonder what would cause the fuel pressure not to adjust below 10 pounds ?
     
  4. sailbrd

    sailbrd Well-Known Member

    Do you set it with motor off?
     
  5. jake csordas

    jake csordas Well-Known Member

    Do you have a return line from the regulator? I learned the hard way that you need that.
     
  6. offbrand Racing

    offbrand Racing Platinum Level Contributor

    Return line smaller than feed line? Trash in the regular?
     
  7. Michael Evans

    Michael Evans a new project

    After I took the regulator apart, I made a return to empty to a gas can and it does alright.
    So I guess it has something to do with the line going back to the tank.
     
  8. Sebambam

    Sebambam Well-Known Member

    Hey guys i thought its time to post in this section now..
    My sbb twin turbo build is comin.together.
    Mark burtons new style manifolds, t04e turbos 60trim, on 8psi, intercooled with a 4150 blowthrough carb.
    I m in the process to put it together i just did the IC installation and finishing the piping for the intake.
    I also updated the fuel system to a RobbMc Powersurge 1000 system.
    I will run a locked out timing dizzy at round 25-28*
    Thats the plan at least.
    Here a couple pics
    _20170802_221706.JPG _20170802_221641.JPG _20170802_221619.JPG _20170723_114929.JPG _20170723_114912.JPG _20170723_114856.JPG _20170723_114821.JPG
     
    Julian likes this.
  9. sailbrd

    sailbrd Well-Known Member

    Glad to see the boosted Buick world growing again. Do you have the ability to pull timing? My experience with a 455 and 8 pounds of boost would be that is too much timing. When doing boost be real conservative with timing at first. Start at about 22* then go up from there. Every engine combination is different so there is no set answer to this. If you can afford it get an MSD 6530 box and then you can really dial in timing.
     
  10. Sebambam

    Sebambam Well-Known Member

    I would like to avoid getting another box even though the 6530 is great.
    I wanted to lockout at 25* i also have a msd start and step box. Brand new laying arround, that would give me a manual way to pull timing from the cockpit if needed.
    It also helps with the cranking i think so i might use it.
     
  11. SlowSabre

    SlowSabre Member

    I have a question, and I mean absolutely no disrepect to anyone (gotta appreciate the work that goes into these setups): Are there any turbocharged 455 cars that are really putting down the power? I see some 11 second cars in this thread, but I didn't see anyone deep in the 10's or the 9's, which I find surprising. I see the procharger builds are really working, but I was interested in doing a 455 with twin GT3582's and wondered if it was really worth the effort. I've seen an Olds build that was diesel-like; doing over 800hp by 5000 rpm. Seems like it could work with a Buick. I'm thinking small cam, fast spooling turbos, low rear ratio, for the ultimate sleeper / driver. GN's seem to do well with this type of a build.
     
  12. macbuick

    macbuick David

    As all the previous pictures have disappeared, here is another one of my engine ;-)

    [​IMG][/url][/IMG][​IMG]
     
  13. sailbrd

    sailbrd Well-Known Member

    There is this one. Will run a lot better when the motor has a crank in it. The 520" will be over 2000hp, the 560" closer to 3000 hp. Should be able to turn 10's. 20180818_155825.jpg
     
  14. SlowSabre

    SlowSabre Member

    Wow! Now that is an amazing build!
     
  15. sailbrd

    sailbrd Well-Known Member

    For those that don't know that is Bobb Makely's latest rebuild of his 72.
     
    SlowSabre likes this.
  16. hugger

    hugger Well-Known Member

    Common misconception,...on a big block even a mild one you'll want a larger exhaust than compressor wheel, you also need a minimum of a .96 ar, otherwise it will be out of steam by 5k and be worthless power, as it will just never hook up. A stockish 455 with a single 88 would be better than small twins , two BWs366~72's would be a killer setup for a street bound 455
     
  17. SlowSabre

    SlowSabre Member

    Makes sense... thanks.
    I'm rethinking the whole idea. It would be easy to make big torque... maybe too easy. I don't think it would be the best setup for a street/strip car because of the traction issues. I also have an 86 231 that would probably work, but I like the idea of not having to deal with much over 15psi. Seems like a bomb waiting to go off if the tune is not right. A 350 with a single 7875 would probably be the best of both worlds.
     
  18. hugger

    hugger Well-Known Member

    Yes it would
     
  19. Jim Blackwood

    Jim Blackwood Well-Known Member

    Hey I got something for you guys...

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    346 CID 300 stroker, Carillo rods, Weisco slugs, TA 264-74 R roller cam, TA/Rover heads, Eaton M112 blower, GM '411 ECM, COP. Able to masquerade as a 215 due to the Cerrakote silver. Should get swapped in for the iron head 2bbl 300 "mule" this spring. Ain't custom parts great?

    Jim
     

    Attached Files:

    Mark Demko and patwhac like this.

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