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throttle body spacer

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by 88k5blaza, Oct 23, 2002.

  1. 88k5blaza

    88k5blaza Registered Member

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    /forums/images/graemlins/k5.gif do these throttle body spacers do anything??
     
  2. imiceman44

    imiceman44 1 ton status

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    Yes they do /forums/images/graemlins/cool.gif
     
  3. HarryH3

    HarryH3 1 ton status Author

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    They liberate a bunch of money from your wallet. /forums/images/graemlins/shocked.gif
     
  4. 88k5blaza

    88k5blaza Registered Member

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    do they mostly just boost horse or do they add torque also??
     
  5. imiceman44

    imiceman44 1 ton status

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    Sorry for the smart ass response, just had to /forums/images/graemlins/rotfl.gif /forums/images/graemlins/rotfl.gif
    The spacers actually promote low end torque because what they do is raise the length of the intake so faster air, which equates to higher torque at low RPM's.
    If you check out Turbo City's website I am sure you will find some more technical info, they are the specialists in TBI /forums/images/graemlins/thumb.gif
     
  6. 88k5blaza

    88k5blaza Registered Member

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    thanks ice man! i wanted someones opinion other than the jerk thats just tryin to sell them.
     
  7. HarryH3

    HarryH3 1 ton status Author

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    Car Craft dyno tested a bunch of different spacers for carbs recently. The test was done on a pretty healthy small block. Some made nearly no difference, while one showed a boost of about 7 HP up around 6,500 RPM. Not many of our trucks ever see 6,500 RPM, so the effect most folks report is pretty much the placebo effect. /forums/images/graemlins/wink.gif

    If the TBI spacers cost the $20 or so that they really should cost, then it might be somewhat worth it. But most of them seem to be in the $75-110 range. That's pretty close to the price of a good aftermarket intake manifold, which is much more likely to make a truly measurable difference. /forums/images/graemlins/cool.gif
     
  8. joker89blazer

    joker89blazer 1/2 ton status

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    I don't have a spacer.I have read comments from other people some said it helped a little others said it made no differance.No one said it made a huge differance.With a automatic I would be concerned with destroying the tranny if it made problems with the adjustment and operation of the tv cable for the tranny.
     
  9. muddysub

    muddysub 1 ton suburban status Staff Member Moderator GMOTM Winner

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    but tv cables are only on 700r4s. i've heard better results from injector spacers.
     
  10. BurbinOR

    BurbinOR 3/4 ton status

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    Hot Rod Magazine did an actual dyno test of them in the past few months.............facts showed less torque, and slightly more HP. Not worth it on our trucks if you LOSE torque. /forums/images/graemlins/blush.gif
     
  11. heavy4x4

    heavy4x4 1/2 ton status

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    I've got a TBI spacer on my truck. I first installed it and turned on the truck. The idle was super high because of the TBI being raised. So, I had to install the spacer bushings and longer bolts provided to raise the throttle linkage bracket. Then, I went for a test drive. I wasn't very happy because now my tranny (700-R4) shifted at higher rpms. The engine would rev pretty high and then slam into the next gear. I looked in my Haynes manual and it showed how to adjust the t.v. cable. I did that and now my truck's back to normal/stock operation. Power improvement - maybe a little different, seems to give the engine a little more oomph cruising in the low rpms on the freeway.
    Only negative I have about it is that it's really tight getting back into the throttle linkage. My back hurt and legs were shaking after crouching over the engine compartment during the install. Needless to say, I didn't reconnect my cruise servo - doesn't matter, didn't work well anyway.
     

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