Spx plenum porting

Discussion in 'Race 400/430/455' started by staged2ny, Dec 20, 2019.

  1. staged2ny

    staged2ny Silver Level contributor

    Hey guys I just bought a dominator Spx intake was curious to see if any of you have pics of how you worked the plenum , thanks in advance for any replies ...
     
  2. Stevem

    Stevem Well-Known Member

    For the best results on a Intake the Plenum rework needs to complement the Carb and whatever spacer you may be running.
    What are you using, or will be using in that regard if not a Dominator?

    Just to generalize some rework look at the lead in radius from the Carb mounting pad into the top of each runner.
    If your going to run any type of spacer then use that combined added height of that spacer and what meat is there in the Intake to grind in a greater radius/ transition from your now higher Carb pad into the roof of each runner.
     
    Last edited: Dec 20, 2019
  3. staged2ny

    staged2ny Silver Level contributor

    I’m running a quick fuel 1050 without a spacer because of good clearance .. thanks for the reply
     
  4. dan zepnick

    dan zepnick Well-Known Member

    PM me your email address. Cant seem to get my pic to load.
     
  5. nickbuickgs

    nickbuickgs nickbuickgs

  6. Bens99gtp

    Bens99gtp Well-Known Member

    That's alot of work down in there. Almost too pretty for no one to see. Too bad the intakes were not clear
     
    nickbuickgs likes this.
  7. Briz

    Briz Platinum Level Contributor

    Mine is a dominator SP2. Recently ported. Might give you some reference.




    KIMG0749[1].JPG KIMG0748[1].JPG
     
  8. Bens99gtp

    Bens99gtp Well-Known Member

    I have some pics of my sp2 as well. I had to cut more of the clover leaf out to be able to run my 110mm sv1. I used a 464 as a gauge to fit
     

    Attached Files:

  9. staged2ny

    staged2ny Silver Level contributor

    wow that some nice work !
    very nice thanks for the pics I was wondering how far one could go and now I have an idea >>>
     
  10. 70 GMuscle

    70 GMuscle Plan B

    NickBuickGS looks like very different intake than briz and bens.
    Almost like a victor series edelbrock.
     
  11. Bens99gtp

    Bens99gtp Well-Known Member

    Nick's is a spx.......mine and briz are sp2. That spx almost looks like it was 4150 base that was opened up to a 4500 openering
     
    70 GMuscle and Briz like this.
  12. 70 GMuscle

    70 GMuscle Plan B

    Interesting.
    I see the dual pattern.
    Looks like maybe a quadrajet and Holley bolt pattern
     
  13. tommieboy

    tommieboy Well-Known Member

    My friends old KB Wildcat Cool Runner intake. Don't know anything about it except he left is sitting in my garage, after he moved on to Super Stock Hemi's.

    Not sure if the images will show up below.

    Tommy

    [​IMG]

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    [​IMG]

    [​IMG]
     
  14. Briz

    Briz Platinum Level Contributor

    Might you ant to part with that abandoned intake?
     
    Dan Gerber and Kingfish like this.
  15. tommieboy

    tommieboy Well-Known Member

    Sorry for the late reply, but no, it is still not my intake to sell. I have just been baby sitting it for the last 10+ years, along with some of his other Buick stuff.

    Tommy
     
    Julian likes this.
  16. Tom Haeffner

    Tom Haeffner Well-Known Member

    I have 2 wildcats.One has been ported and the other is brand new in the box.Neither one looks like the one in your pic .Your plenum looks different .Mine were both machined for dominator new.Maybe they took a square bore intake and machined them for a dominator and then put the carb mounting holes in afterwards.
     

    Attached Files:

  17. Tom Haeffner

    Tom Haeffner Well-Known Member

    Maybe the one you have had been ported then sandblasted??
     
  18. tommieboy

    tommieboy Well-Known Member

    I would also assume ported and media blasted.

    Tommy
     
  19. nickbuickgs

    nickbuickgs nickbuickgs

  20. nickbuickgs

    nickbuickgs nickbuickgs

    That’s correct I tried to copy one
     

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