Picked up my SP3 from Michaels racing Engines

Discussion in 'Small Block Tech' started by Mark Demko, Aug 15, 2015.

  1. Mark Demko

    Mark Demko Well-Known Member

    Got my SP3 back from Michaels today, he was surprised hos tiny the ports were in "as cast" form.
    I mentioned I think its for the guys with a stock or near stock 350, so the port velocity doesn't slow down, or something like that:pp
    Foxes Den, I mentioned your name, Micheal says, "Oh, Guy Fox, yeah I remember him, its been 10 or more years since I did his build"
     

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  2. sriley531

    sriley531 Excommunicado

    Nice Mark! Now get us some numbers, you can be the guy that finally puts up numbers and proves this things legit!!!
     
  3. Fox's Den

    Fox's Den 355Xrs



    That tells you how time flies it has been 20 years. I will have to go see him. If you happen to know who Paul Pirnat is they did his motor to, 600 hp 455 back then. I have not seen him for some years now.
     
  4. Mark Demko

    Mark Demko Well-Known Member

    :TU:
    Im gonna try my best!
    Cant wait to bolt that on and give 'er heck:Brow:
    Micheal was showing me a good drop base aircleaner assy. I told him I'll probably have to go that route due to hood clearance, we'll see. He said the style with the flat type tops actually hurt power.
     
  5. Mark Demko

    Mark Demko Well-Known Member

    All painted Buick red, actually its red caliper paint I had left over from work but looks close enough:)
     

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  6. sriley531

    sriley531 Excommunicado

    Looks sharp Mark!
     
  7. Mark Demko

    Mark Demko Well-Known Member

    Thanks Shawn!
    Hope it performs as well too:TU:
    I feel I'll have to buy some pipe plugs, there seems to be quite a few "holes" in the water passages:Dou:
     
  8. 70sgeek

    70sgeek drive it like a rental.

    Can you post what size pipe plugs it will need? I just ordered mine today and forgot to ask :Do No:

    thanks!
     
  9. Mark Demko

    Mark Demko Well-Known Member

    Will do!
    Im starting the R&I today.
     
  10. hugger

    hugger Well-Known Member

    1/2in npt
     
  11. 70sgeek

    70sgeek drive it like a rental.

    cool, I'll grab those over the weekend.

    Also if anyone reading this has already installed this intake, interested in knowing what drop base air cleaner depth I may need to clear my GS hood with a 3" element - May be using the TA thick carb gasket which they say is approx 3/8" - so it'll be that + 1" additional intake height over the SP-1 I have now. Running a Q-jet which has electric choke as well.

    Shipped yesterday so hopefully I'll be ready to install next weekend!
     
  12. rex362

    rex362 paint clear and drive

    interested in knowing how gs air cleaner - hood clearance would be with SP3 if any ?
     
  13. 300sbb_overkill

    300sbb_overkill WWG1WGA. MAGA



    You do know that the SP3 is for the sbb 350 and the SP1 intake is for a BBB 455 right?



    Derek
     
  14. Mark Demko

    Mark Demko Well-Known Member

    I took a vacation day today and figured its a good time to start my install of my SP3.
    All went well, nothing looked weird inside the engine, even took my rockers off the left side, removed 4 pushrods, and inspected the base of the lifters for proper rotation, all was well there too:grin: I was kinda hoping I'd have an excuse to put a roller cam in it:mad:
    Only glitches, and they were minor, was the throttle return bracket needed minor trimming, and the hole in the A/C compressor bracket needed slight elongating where it bolts to the intake, but who runs A/C on a true race car anyway:shock:
    Hopefully I'll have it all buttoned up by the end of the weekend, Im already checking track programs, see when they have TNT.
    As far as hood clearance, I SLOWLY lowered the hood, with only the air cleaner stud protruding from the carb, I was very very leary of the stud hitting the hood, so I watched the hood skin from the outside as I lowered the hood, click, click, click, all was good, now to see what happens with the GS set up!
     

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  15. 70sgeek

    70sgeek drive it like a rental.

    when I get to that point, I'll probably remove 1 or both GS hood grilles so I can see/feel the clearance from outside as the hood closes down.
     
  16. Gary Farmer

    Gary Farmer "The Paradigm Shifter"

    Looks great! :TU:


    Gary
     
  17. Mark Demko

    Mark Demko Well-Known Member

    Good idea:TU:
     
  18. Mark Demko

    Mark Demko Well-Known Member

    Got everything done, checked clearance with GS air cleaner, WITH 1/2" carb spacer, no go.
    Removed foams, still no go
    Removed spacer from under carb, WITH NO FOAMS on snorkels it seems to just clear.
    So there yah have it, SP3 with no carb spacer and no foams it just clears, BUT, that's on my car, your results may vary:grin:
    Took it for a drive, idle seems smoother, low end seems a wee tad softer, but not a lot, once it hits whatever rpm in second, the sumbitch comes alive, BIG difference from the Stage 1, BUT, again, that's on my car.
    People with stock 350's may not like or get the same results.
    I do have to tune out a hesitation when I floor it, seems the secondaries need tightening up a tad, no big deal.
    Next its off to the track!!
     

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  19. hugger

    hugger Well-Known Member

    Its very common and most likely that its lean , single plane intakes generally require a stronger pump shot and a richer fuel curve altogether. Just something to ponder
     
  20. alec296

    alec296 i need another buick

    Maybe tweak float level too.
     

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