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Throtte Body Spacers

Discussion in 'Chevy Trucks' started by Stan, Nov 20, 2005.

  1. Stan

    Stan Senior Member
    Messages: 579

    Anyone one ever have good results with this or is it a waste of $ ?
  2. spongebob

    spongebob Senior Member
    Messages: 102

    stan, i fell for the hype and bought one, then i did a search on the subject..found it to be just that ..hype.:mad:

    mine is sitting in a drawer unopened....wana buy it??;)
  3. Ice Scream

    Ice Scream Member
    Messages: 82

    Well they are hype to an extent...I have one on my truck and it does help, alot, but I have a 454 and it creates alot of heat. I also have a k&n airfilter, headers, stainless 3" dual exhaust, and the spacer. All of it created about 4mpg...
  4. foggyjr5

    foggyjr5 Member
    Messages: 77

    I was talking to a guy that put one on his saburban and right before he put it on he dyno-ed it and then put it on. After it was installed he then again dyno-ed it and found that it actaully lowered his horsepower.
  5. Stan

    Stan Senior Member
    Messages: 579

    Thanks for answers, sounds like the 100 bucks is better well spent into the gas tank.
  6. JohnnyU

    JohnnyU 2000 Club Member
    Messages: 2,040

    The spacers will only have a positive affect on an engine with throttle body injection or a carburator. I noticed about 1-2mpg improvement with mine, when I drive for fuel economy....

    Any small block later than 95 (Vortec CFI) will not see any type of improvement.
  7. kingriver

    kingriver Senior Member
    from alaska
    Messages: 216

    Got Two

    I have had them installed on two of our trucks, Chevy Silverado 1 T-- 454 and GMC Suburban 3/4 T--350 and never noticed any increase in mileage, never really noticed a decrease in HP but that might be true also, was a hassel to install them, so I have just let them be:cool:
  8. derekbroerse

    derekbroerse 2000 Club Member
    Messages: 2,377

    These parts are more for modified engines, not really any good for stockers. Think of them along the same lines as putting a high-rise manifold on a carbureted engine--it only works if you have the cam and compression to make use of it. Basically, you are adding to the plenum volume and runner length with them. But gains, if any, will be tiny on a stock engine, especially something like a truck that doesn't get run like a race car.