4150 to 4500?

Discussion in 'Race 400/430/455' started by Dubuick, Jun 21, 2004.

  1. Dubuick

    Dubuick CMDR Racer

    Is there a way to make a 4500 carb work on a 4150 style sp1 intake I need to upgrade to a dominator if a can make it work with my intake ?


    Mike
     
  2. LARRYRSTRUBE

    LARRYRSTRUBE Guest

    Try proform or call summit and check on adpters
     
  3. GS Kubisch

    GS Kubisch THE "CUT-UP" BUICK

    Yeah Mike.....They make adapters that will work....Some Cars really like the adapters too.
     
  4. john hixon

    john hixon Well-Known Member

  5. Dubuick

    Dubuick CMDR Racer

    Yea i have seen that spacer before but with the stock gs hood i don't have the room for the 2" spacer and they don't make a 1".But anyone heard of having the intake machined out and redrilled to fit?
     
  6. GS Kubisch

    GS Kubisch THE "CUT-UP" BUICK

    Mike
    Yes.....That is an option,I've seen that done too.
     
  7. Dennis Halladay

    Dennis Halladay Well-Known Member

    Why not replace your intake with a dominator intake and sell yours. I did have one that had been machined from q-jet intake but was a fair amount of work. The TA intake will sell well on the board or ebay and you can get the proper intake probably for less total expense than modifying your intake. I think you could make the 1/2" spacer work using the q-jet mount holes and some work with a die grinder but will not work as well as the dominator intake. The extra carb bore spread of the dominator seems to help torque even down low. With the spacer and standard intake I would bet you wouldn't see the same power increase at lower RPM. I made a 1/2" dominator to standard holley adapter for an engine I sold a few years ago should be able to do it the oposite way also.
     
  8. Dubuick

    Dubuick CMDR Racer

    Yea you got a very good point about the long run being cheaper.I was just try to figure out what it was gona cost to do the change over .The carb is a big investment at $1000 and the intake I would go with spx at $375 and then port work.I'm just tring to get rid of the car running lean and hopefuly pick up a tenth or two.


    Thanks Mike
     
  9. john hixon

    john hixon Well-Known Member

  10. GS Kubisch

    GS Kubisch THE "CUT-UP" BUICK

    Mike
    I have the SP1 that I took off my motor.......So far the Wildcat has only matched my 9.63 best.....
    My SP1 could be for sale,Let me know if you're interested.
     
  11. Buicks4Speed

    Buicks4Speed Advanced Member

    Going Lean???
     
  12. Clark Porter

    Clark Porter Team Headless Chicken

    Be aware that the SP-1 dominator intake will require a bit of "cleaning up" in the plenum. I have always been pleased with TA parts, with this exception. They rough cut the plenum to fit the larger throttle bores, and these cuts require blending. Definately not a bolt on.
     
  13. 10sec 455

    10sec 455 Well-Known Member

    TA makes an adapter that will bolt on to the q jet bolt pattern. Then you hog out the manifold to match. I did it on mine, wasnt too bad.
    Jeff
     

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