Boosted Buicks Here!

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

  1. Justa350

    Justa350 I'm BACK!

    I've been running on a bone stock shortblock since day one (about 6 years now) mostly at 8psi. I actually ran it on 87 octane with no intercooler for a while, but had to take a lot of timing out. it takes 28 degrees of timing on 8psi with no rattles or sputters on 92 octane. Pulls 20" of vacuum and cruises super mellow. I would not consider doing another car without turbos. Best of both worlds, smooth cruising, great power.
     
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  2. Staged 1

    Staged 1 GS restoration in progress(Finally)

    Rick, I will for sure give you a call some time. I tried to look you up when I purchased the car but came up with a lot of dead ends. I burned the trans up at the GS Nationals this year but was going to replace it with a built 2004r out of a 9 second GN anyhow. Will also be adding fuel injection over the winter. Should be a real beast in the spring! Thanks for chiming in.:TU:
     
  3. Michael Evans

    Michael Evans a new project

    NGK FR-5 plugs (have aluminum heads)

    I started at .038 . It ran alright until I upped the boost. At over eight pounds it started to blow out the flame and had to make it smaller.

    The engine likes 0.030 at 10 pounds of boost.
     
  4. 66larkgs

    66larkgs paul 66gs turbo nailhead

    swapped my turbo from the back of the car to the front..got tired of the low exhaust and full legnth headers.

    Paul
    66larkgs
     

    Attached Files:

    patwhac and Julian like this.
  5. superbuickguy

    superbuickguy Well-Known Member

    I figure my Buick might fit here.
    1970 Skylark. I bought it with a Chev 350 in it; then replaced with a Blown 350, then a blown 406.... blew them both up.
    Bought a 455 for it a year ago, put a 4 speed in it... and it has an oil leak that was the result of fixing the low oil pressure issues it had.

    So... I'm building a new motor for it... and as I don't do well with the words stock, restoration, or reliable... here's what's coming

    462 Buick, forged Speed pro pistons
    Edelbrock aluminum heads
    stock crank, rods
    girdle
    custom TA performance roller cam
    twin GT 35 turbos
    Fuel injection - although I haven't decided which FI to run yet - leaning towards MS... but haven't bought it yet.
    I'll build my own sheet metal intake and headers for the turbos.

    expected HP is 700.
     
    Julian likes this.
  6. 66larkgs

    66larkgs paul 66gs turbo nailhead

    let it rip!!!go all the way or dont do it at all..MS is great setup if you are good with programming and tunning yourself. this is a picture of the turbo headers i built.. if you need any advice i be glad to tell you where i made mistakes so you dont make the same. i built a set out of steel first and mounted and mocked up the turbos and than built the next set out of 304ss i am going to send them out to be coated but motor is apart for rebuild so that is on the back burner.
    best of luck
    Paul
    66larkgs

     

    Attached Files:

  7. buick46270

    buick46270 Well-Known Member

    Yea 700 hp will be easy, the stock block will love it
     
  8. BUICKRAT

    BUICKRAT Got any treats?

    I think you may be on the ragged edge with the stock rods. I know they are good units, but....700 is close to twice what they were designed for.
     
  9. Michael Evans

    Michael Evans a new project

    So far my re-worked factory rods are holding 581 HP.
     
  10. superbuickguy

    superbuickguy Well-Known Member

    leave it to me to forget to put some of the details in.... they're stock rods with ARP bolts, they have been checked for straightness and cracks, and the the parting lines have been ground off... maybe a better way would be modified stock? sorry bout that.

    Everything inside is ARP, and all (except head bolts) are studs. Head bolts would be studs but there's some clearance issues that I don't want to deal with.... also using an Orange gasket for the head gasket.

    and on that vein... they're white, why are they called Orange head gaskets? do they use orange juice to give them extra strength? :pp
     
  11. Michael Evans

    Michael Evans a new project

    I to wondered how they got the name.

    How much boost are you going to have to get 700 HP ?
     
  12. buick46270

    buick46270 Well-Known Member

    What size mm is the gt35?
     
  13. sailbrd

    sailbrd Well-Known Member

    I would use a Cometic gasket. I blew the "Orange Crush" gaskets.
     
  14. superbuickguy

    superbuickguy Well-Known Member

    with the intercooler and 90% VE 9 psi boost should do it... I will say the hardest part will be to not turn up the wick... but I have some hidden plans that rely on learning from this set up... so it should be a lot of fun.

    GT 35 is 61.4 mm
     
  15. 66larkgs

    66larkgs paul 66gs turbo nailhead

    How about some Meth injection??? i have been looking into snow for a little bit.. havent come to terms with spending the money yet.. still need to finish the new engine build..

    Paul
    turbo nailhead
     
  16. superbuickguy

    superbuickguy Well-Known Member

    I honestly think the biggest problem (for me) will be to resist the urge to turn the knob on the boost controller to 12 or 15 psi.... the stock rods simply won't handle that kind of hp that boost will generate - so alcohol injection won't be the biggest issue (also, why run methanol injection when you can run E85?)

    Next motor, will be able to handle it, but then there will be a problem with the object between the steering wheel and brake pedal. :3gears:
     
  17. macbuick

    macbuick David

    Today the 350 found his way home into the Skylark .

    I fitted the Procharger i bought from XS perfomance some times ago, to see if everything was fine .....


    inside.jpg
    the brackets are inverted, i tried some different fittings as....



    ....the power steering pump hits the water pump so i can't bolt it !
    inside2.jpg


    Who also has the XS brackets for a 350 ? Any problem with it ?

    I will have to buy a new steering pump with a remote reservoir but it costs $$$ or modify the brackets to relocate the pump ?
    Any ideas or advices ?

    Thanks

    David
     
  18. Michael Evans

    Michael Evans a new project

    Take the pump off who needs power streering? That will not cost anything.
     
  19. Harringtondl

    Harringtondl Member

    This may be of some interest to the group. I completed the full restoration of my 84 Buick Electra (which I bought new in 84), and when the body and interior were done I decided to get rid of the tired old 307 V-8. I was lucky to find a 1970 Buick GSX 455 engine and used the good block and crank (and luckily a good oil pump housing cover) to build a full-race, supercharged engine. It is bored 0.060 with a TA roller cam with supercharger grind (extended exhaust timing), stage 1 ported heads, TA steel head gaskets, oil mods and a full programmable MSD ignition with 3-bar MAP sensor. It has an 8.71 blower from Hampton blowers that has pully ratios designed for 10-12 lbs of boost at 5600 rpm. The engine was very carefully set up for a CR of 8.1 (on the advice of Don Hampton), and has shorty headers with a 3 1/2 inch stainless exhaust (exiting behind the front wheels). It uses two Edelbrock 750 carbs with a progressive linkage. Fortunately the Electra came with a heavy duty positraction read end. Some photos of the build are attached for your review. I found out that there are no 455 Buick 8.71 blower intakes on the shelf ... they have to be fabricated to order (Pontiac 455 yes, but Buick 455 "NO"). The 84 Electra has a huge engine compartment (good thing, because you need it!), and the engine fit right in, with only an inch to spare all around. The engine runs good, but I haven't had it dynoed yet. I only have 800 miles on it, and only drive it from May to October (I'm in Michigan), and then only to summer car shows and cruises. All of the comfort items were removed for a cleaner install. There is no AC or AC hoses, no heater or hoses, no cruise control, etc. My next project is to convert the 200-4R trans to a stick shift.
    Dave Harrington Troy, Michigan Member of the Southeast Michigan Buick Club
     
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  20. flynbuick

    flynbuick Guest

    What happened to the GSX car?
     

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