Which Carburetor do I need?

Discussion in 'The Mixing shop.' started by skylark7deuce, Nov 16, 2020.

  1. skylark7deuce

    skylark7deuce Well-Known Member

    After 3 years of using the Fitech system I have grown tired of let downs. I have the 1200 hp system..runs good when its running, which is most of the time, but have a headache at times too (bad injectors, rpm noise, wrong settings and electrical issues). Anyway, I'm considering going to a carburetor; never had one on this motor but I believe it would be less of a hassle.

    Which carb do you guys recommend? Street/strip...462, SPX intake, 600 hp on motor, plus 150 shot. Want to run fast at the track and good on the street.

  2. telriv

    telriv Well-Known Member

    This may/may not be of interest to you. The distributor causes a lot of interference with the electronic control module mounted to the EFI unit. Normally the cause is the steel hold down for the air cleaner & wing nut. What it does is act like an antenna & the metal air cleaner makes it even more so. Replace the steel stud with a plastic stud & I will almost guarantee most of your problems could be solved. How much could it cost??? Just do a search for plastic threaded rod. It could save you the time & $$$$$ it could cost to swap over as your planning.
    Another option would be to run a ground wire from the air cleaner metal base & top to a good ground on the engine. AGAIN, how much could it cost & the time to install??? You could even install it under the air cleaner wing nut.

    Tom T.
  3. skylark7deuce

    skylark7deuce Well-Known Member

    Thanks Tom, I'll look into it.
  4. skylark7deuce

    skylark7deuce Well-Known Member

    The sensitivity of the system is what's propelling me to change over. Never thought I'd have to ground the air cleaner.
  5. telriv

    telriv Well-Known Member

    That's what we get when we try to introduce new technology into our old iron.

    There should be SOMETHING stating that in the instructions sent. This is NOT something new. They know about it!!!!

    WHY do we have to drive ourselves crazy when IF they would have mentioned something we would then be aware of the potential problems. Then again how many read/gloss over the instruction sheet???

    Tom T.
    buicksWILD likes this.
  6. hugger

    hugger Well-Known Member

    What kind of money you wanting to spend?
  7. hugger

    hugger Well-Known Member

    but to answer your question any 850 to 1050cfm 4150 carb is what you need,...at that level they all will have the "HP" style body,..the AED HO carbs are one of the best bang for the buck
  8. Bens99gtp

    Bens99gtp Well-Known Member

    I was just typing almost the same thing ethan..........I was going to ask if you need/wanted a choke. If so 850 is as big as they go. But for best power a 900-1050 4150 would be best
  9. skylark7deuce

    skylark7deuce Well-Known Member

    I'd like to stay under $600. Also is it OK to buy one used? I heard new ones often give you problems too.
  10. 72STAGE1

    72STAGE1 Runnin' with the Devil

    Sent you a PM on just what you’re looking for.
  11. shiftbyear

    shiftbyear Well-Known Member

    2x Tom, something this critical should be in BIG BOLD LETTERING on the instructions.
  12. 436'd Skylark

    436'd Skylark Sweet Fancy Moses!!!!!

    It would be easy enough to test Tom's theory by simply removing the air cleaner and going for a ride.

    I'm a skeptic but definitely curious to get the results...

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