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VR Throttle Body Velocity Stack

This is a discussion on VR Throttle Body Velocity Stack within the External Engine forums, part of the LSx Technical Help Section category; Was scanning the LS-1 section of a parts catalogue last night and noticed this item. It is a sleeve that ...

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    Question VR Throttle Body Velocity Stack

    Was scanning the LS-1 section of a parts catalogue last night and noticed this item. It is a sleeve that fits inside the throttle body that "supposedly" gives the same effects as porting it. Any one tried this or have any info as to its utility?

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    Senior Member 1MileCrash's Avatar
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    i've never heard of it before but it sounds like bunk to me. why would you want to decrease the cross sectional area of your throttle body and reduce the amount of incoming air flow into the engine? seems like it could hurt performance more than it could do good.

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    Flow VS Velocity

    Disregarding any attributes this item may/maynot have, it seems to me that the velocity of the airflow counts more than people think. I have never been a fan of gigantic exhaust cross sections, or suitcase size carbs because they slow down the speed at which the gas flows too much. Air and exhaust gas have inertia (being matter) and the inertia of the gas helps it to get around obstructions and in the case of the exhaust pulse, each one helps the one behind it.i have seen many cases where people spent big bucks on drainspout size exhausts and killed all but their top end.
    And yes, I'm about to get a cat-back system for my Z!

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    Senior Member 35thAnniZ28's Avatar
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    eating bulldog
    son of biscuit

    naw..don't get it...it doesnt fit correctly..even if it came with some thing to hold on to the throttle...its not worth it imo....i just bought it for shit's and giggles..but naw its meant to dissapoint the owner

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