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throttle body spacer worth it?

Discussion in 'Performance & Fuel' started by 1morepart, Apr 15, 2010.

  1. 1morepart

    1morepart New Member

    is a tb spacer worth the 100 bucks? which one do i go with? airaird,etc....
    who likes that whistle?
    please help a newbie
    jason
  2. j-schmizzle

    j-schmizzle New Member 1000 Posts 100 Posts

    i've heard from other chevy truck owners say that throttle body spacers are not worth spending money on. that all it really does is add a "whistle" and totally useless especially on Vortec engines.

    sorry to jump on your thread 1morepart. i too would like to hear from other members on this forum as well about their thoughts/opinions on TBS.


    Last edited: Apr 15, 2010
  3. TrailLeadr

    TrailLeadr New Member 1000 Posts 100 Posts

    Well the spiral shape actually has little to do with anything other than making noise. It may cause some extra turbulence, but nothing that's going to help.

    When you add a TB spacer what you are effectively doing is increasing the plenum volume. A larger plenum will basically make for a little more torque. Some people feel it and others don't. One main reason may be older more tired engines will notice the increase, while newer engines still get the bump in power it is less noticeable. It also depends on revisions made to intakes as the years go on. Newer revised intakes may not benefit as much as an older version of the same style intake, since after a point adding more space to the plenum will have the opposite effect and power could start to drop off.

    In my opinion, it's not worth $100.00. It's a block of aluminum machined to your TB size. It's not that special. It might be worth it for less money, say in the $50 range to see if you get any noticeable results.
    If you really wanted to make some more power and are willing to play with the intake and part with $100, you're better off to save up a couple hundred more and get a tuned intake from someone like Edlebrock or Holley, that is proven to make more power. The spacer is hit or miss, and should be considered a gamble.

    Keep in mind that the "Vortec" portion of the engine is in the heads not the intake.
    Last edited: Apr 15, 2010
  4. j-schmizzle

    j-schmizzle New Member 1000 Posts 100 Posts

    tnx for the info. that was very informative
  5. 1morepart

    1morepart New Member

    thanks for the replies..would like to hear some more.
    jason
  6. ejohnson03

    ejohnson03 New Member 1000 Posts 100 Posts

    What model year vehicle and Engine you running?

    I managed to snag a deal on my TBI spacer off eBay for $28 and free shipping.

    Can't say for sure what improvement it gave me specifically, because I did several performance upgrades all at once. Headers, dual exhaust, Cold Air Intake, Accel super coil and module.

    But since I had my TBI off to clean,and for the low cost, it was worth it to me.

    Never rush into any performance or appearance upgrades without taking the time to check out the bottom line.

    Hope this helps...:neutral:
  7. Coolrado

    Coolrado New Member 100 Posts

    I know on my engine they are worthless. I think it depends on the type of engine and probably depends on the type of throttle body and intake.
  8. JennaBear

    JennaBear New Member 100 Posts

    Throttle body spacers (TBS) came about back in the time when TBI engines were the craze. The TBS did indeed help the TBIs as they helped to improve atomization of the fuel by changing the flow of air as the fuel was sprayed before the throttle body. The gains are minimal but are still there.

    The TBS are a waste on the newer engines as the fuel is sprayed after the throttle body. The air is already "spun up" as it goes through the throttle body, so the TBS basically duplicates the effort. The TBS won't hurt your engine however, that being said, some folks wind up having problems with the spacer as it is one more thing to wiggle lose and cause leaks.
  9. 1morepart

    1morepart New Member

    thanks for the replies...i think i will keep my hundred and put it on something worth while
  10. Silverado Junkie

    Silverado Junkie New Member 100 Posts

    Good choice, they are all right. They only work on TBI motors like mine. Ive got a PowerAide throttle body spacer and did notice a slight improvement in how fast my motor revved and thats about all it did besides make a cool whistle sound.

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