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  1. #76
    Join Date
    Mar 2004
    Location
    Edmonton Alberta
    Posts
    15,236

    Default Re: Boosted Buicks Here!

    Quote Originally Posted by macbuick View Post
    Hello,
    I have bought a ATI Procharger P-1SC to fit on my Buick 350ci engine (from XS Performance).
    I d like to know which camshaft and converter could suit the Procharger?

    Compression? 8.5:1
    Current Horsepower? stock +- 220 HP
    Desired Horsepower? with 500 i'm happy, with 600 grind on my face.. ;-)
    Redline (or shift point)? don't know yet +-5500
    Elevation : seal level
    Cam? ?? i found this,:TA c113?? ( .488" - 228'/ .493"-247' / 113 lobe) does it suits ?
    Intake Manifold? TA Performance
    Exhaust? TA Performance headers (ceramic coated) with Flowmaster 2.5" exhaust and Super 40 mufflers
    Cylinder Heads? stock but ported (perhaps bigger exhaust valve ) 3 angle valve seat job
    Carburetor? Quick Fuel 650CFM
    Fuel Octane? 98 or 95 but i don't know if it's the same value as you have in USA.... (some pump in Germany sell 102 )
    Converter ????


    - stock crank,
    - stock or better rods (still looking)
    - heavy duty pushrod
    - dual valve springs
    - poston roller rockers
    - hi-rev lifters
    - ARP head studs
    - Intercooler

    Thanks a lot for your help
    David
    To start with there is no reason you should be under 300 hp NA, and with a few psi 500 hp should be a cake walk. At that HP level I would not even take the bottom end of the engine appart unless it needed work. If possible use a 73-80 engine with the stronger connecting rods that they come with. Historically the Buick 350 rods from 73-80 have held to about 550 hp without an issue IF the rpms are kept under 6200.

    I went with forged Hershe rods for my turbo engine, they were $1200 however that is a lot less than an rod taking out the whole engine. Same with the Diamond pistons, worth every penny in my books.

    There are options for strong rods. Eagle makes a rod that only requires minimal machine work to work with a Buick 350 however custom pistons are required. This is really not a big deal though since forged pistons will have to be custom made anyways unless you fid the old TRW. PM me if you want the details on the eagle rods.

    Spend some cash having the heads ported well, and yes use the oversized valves if you want. Keep in mind some of the 75 and later heads have a larger exhaust valve stock so you can use stock late ex. valves.

    I would talk to Bobb from Finishline about your cam selection, he could help get you a custom ground version like his. They made a stroker 350 that was 420 hp NA however without the added stroke they would have still been about 390 hp with low compression.

    So there is no reason you could not make 300-350 hp with a stock bottom end and some head porting then have some real fun with boost

    http://www.v8buick.com/showthread.ph...procharger+350
    __________________________________________________ __________________________________
    My book called Small Block Buick Performance covering the V6, 215, 300, 340, and Buick 350 engines will be released soon.

    http://www.v8buick.com/forumdisplay....rformance-Book
    __________________________________________________ ____________________________
    1970 Buick Skylark Turbo 350 street/strip

  2. #77
    Join Date
    Feb 2002
    Location
    Louisville,Kentucky 40229
    Posts
    4,290

    Default Re: Boosted Buicks Here!

    How much of a change did you make?

    I need to get a new set of plugs anyway.
    Michael Evans

    "Universal means the part universally does not fit anything until you make it"


    Next Buick project...........1987 T-Type

  3. #78
    Join Date
    Jul 2007
    Location
    Greensboro, nc
    Posts
    4,322

    Default Re: Boosted Buicks Here!

    Quote Originally Posted by Michael Evans View Post
    Even after the new electric fuel pump all I can get is about seven pounds on the gauge before I get what sounds like a backfire in the intake.

    Been running these springs for three years now.

    Must be time for new valve springs.



    N/A was fine, middle of last year was fine, now no boost over seven pounds without the "backfire".
    Spark is too weak or the gap is too big.. I'm running original stock 1972 vintage valve springs.. With who knows how many miles on them. I had the same problem when I was using a stock ignition and closed the gap to .025.. It was still marginal at best..I've upgraded the ignition, but I really don't want to take the plugs back if it's working. I was using aluminum dryer vent stuff for cold air and it kept turning it into a slinky... Boom!!!!!!!!!!!
    Jay Davenport
    70 Skylark 455... Needs paint and interior
    72 GS 355.. Sold
    71 Skylark 355 Mark Burton Twin Turbo 7.67@ 92.1 W/2.01 60ft Ecoboosted SOLD

  4. #79
    Join Date
    Oct 2007
    Location
    Bend OR
    Posts
    1,355

    Default Re: Boosted Buicks Here!

    Quote Originally Posted by Michael Evans View Post
    How much of a change did you make?

    I need to get a new set of plugs anyway.
    I went from .050 down to .025. Like jay says spark is to weak and is getting blown out.
    James Love

    How do you make a Camaro cool? By putting a Buick engine in it.

    The only thing better than a Buick powered chevy is a Buick powered Buick!

    More Pixs of my cars



    1973 ZSX Skymaro(Z28 Camaro) twin turbo 455 9psi 11.64 @ 120 high 10's on 12psi
    1971 Nova 455 has not seen track yet
    1972 Opel 4 cyl hope to goto turbo v6 fun
    1972 Skylark GS 455 12.80 @ 106
    1967 Skylark 455 has not seen track yet
    1971 Chevelle 307 17.79 @ 75 wife's car
    1969 Skylark 3504brl no track time yet

  5. #80
    Join Date
    Feb 2002
    Location
    Louisville,Kentucky 40229
    Posts
    4,290

    Default Re: Boosted Buicks Here!

    changed gap from 0.038" to 0.030".

    It seems to idle better.

    Plan on taking it on a drive Sunday.
    Michael Evans

    "Universal means the part universally does not fit anything until you make it"


    Next Buick project...........1987 T-Type

  6. #81
    Join Date
    Jul 2007
    Location
    Greensboro, nc
    Posts
    4,322

    Default Re: Boosted Buicks Here!

    I read a quote from a guy on a boosted mustang forum where he said " I never lost any mileage or power from gapping my plugs really small" and he was down to .025.... Running 24 PSI with a blow through..
    Jay Davenport
    70 Skylark 455... Needs paint and interior
    72 GS 355.. Sold
    71 Skylark 355 Mark Burton Twin Turbo 7.67@ 92.1 W/2.01 60ft Ecoboosted SOLD

  7. #82
    Join Date
    Feb 2002
    Location
    Louisville,Kentucky 40229
    Posts
    4,290

    Default Re: Boosted Buicks Here!

    It is running good now but.............

    Anyone have any issues with their blow through carburator?

    I have the Quick Fuel 750-BAN model.

    Mine is leaking gas out the secondary shaft.

    I took the carburator off and found the six main body screws a little loose.

    After I tighten them, It only leaks if you move the secondary shaft when the engine is not running.

    It is only one year old.

    Anyone have an idea???????????

    I'll tell how I found it.........Being a little concerned about the miles per gallon (I know !!!!!!!!) but I ran out of gas unexpectally. I got to looking.
    Michael Evans

    "Universal means the part universally does not fit anything until you make it"


    Next Buick project...........1987 T-Type

  8. #83
    Join Date
    Feb 2002
    Location
    Louisville,Kentucky 40229
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    Default Re: Boosted Buicks Here!

    Just got off the phone with Quick Fuel. The tech on the phone said it was normal for it to leak when the engine is not running .

    He explaned that with it running pressure inside it will cause it to seal up.
    Michael Evans

    "Universal means the part universally does not fit anything until you make it"


    Next Buick project...........1987 T-Type

  9. #84
    Join Date
    Jan 2006
    Location
    mass
    Posts
    800

    Default Re: Boosted Buicks Here!

    Quote Originally Posted by Michael Evans View Post
    It is running good now but.............

    Anyone have any issues with their blow through carburator?

    I have the Quick Fuel 750-BAN model.

    Mine is leaking gas out the secondary shaft.

    I took the carburator off and found the six main body screws a little loose.

    After I tighten them, It only leaks if you move the secondary shaft when the engine is not running.

    It is only one year old.

    Anyone have an idea???????????

    I'll tell how I found it.........Being a little concerned about the miles per gallon (I know !!!!!!!!) but I ran out of gas unexpectally. I got to looking.
    i run a csu 750 4150hp blow thru. no issue and would spend the extra cash for another one of thier carbs. one thing is i think they oring thier shafts.. i thought i read that somwhere..

    Paul
    66larkgs
    401 turbo nailhead

  10. #85
    Join Date
    Feb 2002
    Location
    Louisville,Kentucky 40229
    Posts
    4,290

    Default Re: Boosted Buicks Here!

    The tech said the the shafts were not o-ringed, but had some kind of special teflon ring that spread when pressure is supplied inside of the carburator and then seal it.

    He said if it was o-ringed, it would lock up the shaft
    Michael Evans

    "Universal means the part universally does not fit anything until you make it"


    Next Buick project...........1987 T-Type

  11. #86
    Join Date
    Jul 2007
    Location
    Greensboro, nc
    Posts
    4,322

    Default Re: Boosted Buicks Here!

    Quote Originally Posted by Michael Evans View Post
    Just got off the phone with Quick Fuel. The tech on the phone said it was normal for it to leak when the engine is not running .

    He explaned that with it running pressure inside it will cause it to seal up.
    Why would there be fuel there with the engine not running??
    Jay Davenport
    70 Skylark 455... Needs paint and interior
    72 GS 355.. Sold
    71 Skylark 355 Mark Burton Twin Turbo 7.67@ 92.1 W/2.01 60ft Ecoboosted SOLD

  12. #87
    Join Date
    Feb 2002
    Location
    Louisville,Kentucky 40229
    Posts
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    Default Re: Boosted Buicks Here!

    I guess maybe normally there is not. I was looking for any leak and found that if I moved the secondary shaft, gas leaked out and down the base plate.

    Not something I would do or see with the engine running (just moving the secondary shaft).
    Michael Evans

    "Universal means the part universally does not fit anything until you make it"


    Next Buick project...........1987 T-Type

  13. #88
    Join Date
    Feb 2002
    Location
    Louisville,Kentucky 40229
    Posts
    4,290

    Default Re: Boosted Buicks Here!

    Was starting to have a problem when the boost got uo to about eight pounds.

    It was starting to back fire though the carburator.

    Even called Bobb Makley to see if he thought it was intake valve springs getting weak.

    Turn out the the spark plugs were getting "open" to much.

    I had them set at 0.038 inch and moved them to 0.030 inch. It made a big difference.

    Now I "only" need to let it run about 30 seconds when I first start it up for it to run on it own instead of over a full two minuets.
    Michael Evans

    "Universal means the part universally does not fit anything until you make it"


    Next Buick project...........1987 T-Type

  14. #89
    Join Date
    May 2002
    Location
    Linden, MI
    Posts
    4,664

    Default Re: Boosted Buicks Here!

    Thanks for sharing. I think I have mine at .035, will knock them down to .030 and see if there is any difference.
    Doug Gorton
    Gravity, it's only a theory.
    Trying is the first step towards failure
    -Homer Simpson
    GSX clone- May 2002
    Supercharged 462-April 2010
    1973 Ski Nautique 351w
    87 GN- August 2005

  15. #90
    Join Date
    Feb 2002
    Location
    Louisville,Kentucky 40229
    Posts
    4,290

    Default Re: Boosted Buicks Here!

    I put a fuel guage out on the hood so I came watch the pressure and it turns out that the fuel pressure is not climing with the the boost.

    I currently have a Mallory 4309 regulator that is hooked up directly to the carb hat so it should be getting the full boost signal.


    Is there some way I can fix this or should I just get a new regulator?



    Thinking of getting the Automotive 13301 regulator to match the fuel pump I installed last spring.
    Michael Evans

    "Universal means the part universally does not fit anything until you make it"


    Next Buick project...........1987 T-Type

  16. #91
    Join Date
    May 2002
    Location
    Linden, MI
    Posts
    4,664

    Default Re: Boosted Buicks Here!

    Just for info I have always run a fuel pressure gauge and get really good response on fuel pressure. I use a Robbmc regulator. http://www.robbmcperformance.com/ Setup is -8AN to the regulator and -10AN back to tank.

    The Mallory regulator looks a bit small with 3/8 in and out.
    Doug Gorton
    Gravity, it's only a theory.
    Trying is the first step towards failure
    -Homer Simpson
    GSX clone- May 2002
    Supercharged 462-April 2010
    1973 Ski Nautique 351w
    87 GN- August 2005

  17. #92
    Join Date
    Feb 2002
    Location
    Louisville,Kentucky 40229
    Posts
    4,290

    Default Re: Boosted Buicks Here!

    I thought it looked a bit small also, but it did have the boost port. I thought it did it's job until I put the fuel pressure guage where I could see it.


    Have an Automotive (13301) on the way and I will post any difference.
    Michael Evans

    "Universal means the part universally does not fit anything until you make it"


    Next Buick project...........1987 T-Type

  18. #93
    Join Date
    Feb 2002
    Location
    Louisville,Kentucky 40229
    Posts
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    Default Re: Boosted Buicks Here!

    The Aeromotive regulator is here. The main part looks to be about the same size as the mallory, but the referance part appears to be much bigger.

    Took the car out on the main road where I can open it up and saw that the fuel pressure guage only got up to nine pounds at 6000 RPMs.

    Will change out the regulator this weekend and make another trip.
    Michael Evans

    "Universal means the part universally does not fit anything until you make it"


    Next Buick project...........1987 T-Type

  19. #94
    Join Date
    Feb 2002
    Location
    Louisville,Kentucky 40229
    Posts
    4,290

    Default Re: Boosted Buicks Here!

    First took the Mallory 4309 regulator off and took it apart next to the Automotive 13301 to see the difference in the two.

    Now I can see why it (the 4309 Mallory) did not raise with boost pressure.

    The difference in the size of the chambers and springs are enough in my guess.

    Just with it running in park the fuel pressure will change reving it up.

    The regulator is ok for being a by pass regulator for a street car and that is it.
    Michael Evans

    "Universal means the part universally does not fit anything until you make it"


    Next Buick project...........1987 T-Type

  20. #95
    Join Date
    May 2002
    Location
    Linden, MI
    Posts
    4,664

    Default Re: Boosted Buicks Here!

    Quote Originally Posted by Michael Evans View Post
    The Aeromotive regulator is here. The main part looks to be about the same size as the mallory, but the referance part appears to be much bigger.

    Took the car out on the main road where I can open it up and saw that the fuel pressure guage only got up to nine pounds at 6000 RPMs.

    Will change out the regulator this weekend and make another trip.
    That is not good. Mine idles at 9 pounds, touch the gas ant the pressure jumps.
    Doug Gorton
    Gravity, it's only a theory.
    Trying is the first step towards failure
    -Homer Simpson
    GSX clone- May 2002
    Supercharged 462-April 2010
    1973 Ski Nautique 351w
    87 GN- August 2005

  21. #96
    Join Date
    Feb 2002
    Location
    Louisville,Kentucky 40229
    Posts
    4,290

    Default Re: Boosted Buicks Here!

    Took the car around the block. And now it is a different car. I thought it was pretty fast before, but now...................

    Touch the trottle and the fuel pressure changes.

    The fuel pressure guage goes up to 14 plus pounds with the boost.

    Doug what regulator and What size/type line do you have going to your regulator boost reference?

    Made two changes. The regulator and changed the rear springs.



    Not being ready I think I hurt my neck a little.
    Last edited by Michael Evans; 07-18-2011 at 07:08 PM.
    Michael Evans

    "Universal means the part universally does not fit anything until you make it"


    Next Buick project...........1987 T-Type

  22. #97
    Join Date
    May 2002
    Location
    Linden, MI
    Posts
    4,664

    Default Re: Boosted Buicks Here!

    I use a Robbmc regulator. Just use 1/8th(?small?) vacuumn hose from the carb hat.
    Doug Gorton
    Gravity, it's only a theory.
    Trying is the first step towards failure
    -Homer Simpson
    GSX clone- May 2002
    Supercharged 462-April 2010
    1973 Ski Nautique 351w
    87 GN- August 2005

  23. #98
    Join Date
    Feb 2002
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    Louisville,Kentucky 40229
    Posts
    4,290

    Default Re: Boosted Buicks Here!

    1/8" That is bigger than #3 an line (3/16"), but smaller than #4 an line (1/4").

    I put a #4 stainless braided line from the hat to the regulator. I had a rubber line/hose, but thought it would give with the pressure. That is the reason I went with braided line.

    I will make a new video and put it on U-tube in a couple of days.

    Not sure what size would be more responsive though.
    Michael Evans

    "Universal means the part universally does not fit anything until you make it"


    Next Buick project...........1987 T-Type

  24. #99
    Join Date
    Feb 2002
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    Louisville,Kentucky 40229
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    4,290

    Default Re: Boosted Buicks Here!

    New fuel regulator.....................

    Michael Evans

    "Universal means the part universally does not fit anything until you make it"


    Next Buick project...........1987 T-Type

  25. #100
    Join Date
    Feb 2002
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    Louisville,Kentucky 40229
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    4,290

    Default Re: Boosted Buicks Here!

    on the hood one.................

    Last edited by Michael Evans; 07-21-2011 at 02:20 PM.
    Michael Evans

    "Universal means the part universally does not fit anything until you make it"


    Next Buick project...........1987 T-Type

 

 
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