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throttle body spacer

This is a discussion on throttle body spacer within the Parts Review forums, part of the Sponsors Group Pricing and Parts Review category; anyone ever had one on their ls1? i am looking at a car that has one and i would just ...

  1. #1
    Junior Member
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    White
    1999 Trans Am

    throttle body spacer

    anyone ever had one on their ls1?
    i am looking at a car that has one and i would just like to know if they help at all with perfomance or mpg.
    thanks!

  2. #2
    Impounded MikeSomething's Avatar
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    Pewter Metallic
    '00 Z/28

    No idea, I'd just go w/ a better TB... NICE CAR! =)

  3. #3
    R.I.P. LS1 LS1Power06's Avatar
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    03 Terminator

    i dont think ive ever heard of a tb spacer for a LS1. just port and polish ur stock 1 or if u feel it necessary buy the 90mm one for $500

  4. #4
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    red
    1998 Z28

    Knew a guy who had a helix power tower TB spacer. Could not tell a difference with either. Did give the car a whistling sound when the gas was pressed.
    SLP lts & ORY, ssra, slp lid, gran. maf, smooth bellow, hppIII, Louth Mouth II, no cats, SLP strut tower brace & SFC's, LCA Reloc. Brackets, 1LE front sway, 3.23, A4

  5. #5
    Member mavrikZ's Avatar
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    2001 Trans Am

    Wont do a single bit of good. The point of a spacer is to give the air and fuel more time to mix and atomize. LS1's are a dry intake(no fuel). Rather, fuel is added in the combustion chamber-therefor no 'extra time needed'. GIMMICK

  6. #6
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    Seemed to help a bit on my K2500 TBI, but I don't see it helping an LS1.



    Gary

  7. #7
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    White
    1999 Trans Am

    ok. thanks.
    i ended up not getting the car that had one.
    i found a stock 1999 trans am.
    and i won't be putting a TB spacer on it.

  8. #8
    The Bandit Wesman's Avatar
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    SGM
    1998 Trans Am WS6

    The original concept of a spacer was to create a gap between the carb/TBI and the intake manifold, which would give the effect of a "high rise" intake manifold, without the expense of changing the manifold and having hood clearance issues.

    With SEFI, throttle body spacers are effectively useless. I've heard people say they could notice a difference after installing one, but its probably minimal at best. The only thing it could possibly help with is intake air velocity, since its allowing for a longer distance between when the air passes through the throttle body and when the air is forced down the intake runners.

    Perhaps someone has some dyno charts with and without the TB spacer, just to set the record straight

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