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        VaraRam Cold Air GTO Holden Intake System

        VaraRam GTO / Holden Air Intake

        GTO / Holden VaraRam SDR Cold Air Induction System

        We set our design target to support 800hp/ 500 cu inch and 7000+RPM, all while keeping the system easy to install and making it a TRUE cold air system that breathes better when the hood is CLOSED vs. Open on a dyno. (More on this below)

        We accomplished this goal through intensive on road and track testing which revealed the shortcomings of every other aftermarket system we tested from US and Australian manufacturers.

        They ALL suffered from heat soak- the Holden /GTO has a sealed engine compartment. This allows very little air in or out, so these cars run HOT naturally, let alone if the motor is built or supercharged! (Creating more heat, remember, horsepower is heat!)

        We tested kits that used many configurations, some went over the radiator some to the fender and others sealed to the hood, ALL of them heat soaked the mass airflow meter and air box assembly. This in turn caused the ECU to pull timing out of the motor and this also forces the tuner to detune for the street or track VS the dyno with the hood open and a fan blowing.

        GTO Cold Air Induction Kit by VaraRam

        THE VR remedy- At VR we only design our products for the REAL WORLD not a static test, because U don't win races standing still on a Dyno!

        Step one - Here we relocated the MAF Meter in-front of the throttle body, this improves response and makes for a more accurate read that any tuner will see on a data logging system ex EFI Live, HP tuners etc…

        Step two – Here we placed the MAF meter INSIDE the air box with the filter to shield it from the engine heat.

        Step three - We created a positive seal around the perimeter of intake plenum chamber. We force feed the chamber via the front grill area by taking the natural pressure rise that occurs here and converting it to velocity via the plenum chamber.

        By force feeding the kit we build some pressure inside the plenum chamber which we convert to a rise in velocity in the air filter base inlet design. We confirmed its function by measuring outside temp VS actual MAF measured intake temp the result? The actual measured intake temp was consistently lower than ambient by 2-3deg F.

        (This design does create some ram effect but only at speed above 60mph, unlike our other proprietary ram air systems which build positive pressure in the intake manifold at speeds as low as 37MPH!)

        Step four - Air filter flow- in testing we found many of the Australian front mount filters either did not flow enough air to support the HP or the angles of the air box were incorrect to flow air at the highest possible VE ( volumetric efficiency) . We flow tested ALL of the aftermarket kits US/ Aussie on our in-house superflow flow bench all the way through the cylinder head.
        The results were well…….., what we expected, by themselves every kit out flowed factory, but just making a big or less restrictive hole truly tells you nothing! Flowing through the head from .100-.600 inches of lift@ 28 inches of water (SAE standard) gives you a true picture of what gains are being realized by each port. We calculated this out to HP and found when we had customers dyno test there numbers were within 1-2hp of what we estimated they would gain, Stock or modified.

        We flow tested with stock heads and some modified heads with flow from 248, 252 stock -378CFM on heavily modified heads - LS-2 heads as well as LS-3 & LS-7 heads.

        VaraRam Cold Air Induction Kit for the GTO / Holden

        NO other aftermarket system supplied could even feed the STOCK heads with the proper amount of airflow they needed from .300 inches-600inches of lift@ 28inches, only the VR accomplished this and did so by a strong margin.

        The VR was flowed on a set of SPECIAL heads with a prototype intake manifold (more on this in spring! no comment will be made by our staff, so don't ask) what is important is that we were able to feed the airflow required in a complete engine duty cycle on an engine that would see 700-850hp @ 7500rpm.

        Actual airfilter flow is between 1350 and 1800CFM @ SAE standard on anybodies flow bench even on a bad day! ( street filter vs race filter spec)

        Step five - delivering the flow to the filter- here we have the customer trim the upper most portion of the radiator shroud, this allows for a full 2 inches of clearance across the hood line area when the hood is closed. We measured this at a VE of 90% and came up with 1,725 CFM! (Opening the scoops showed a gain of 300CFM more at 90% VE) 2025CFM if needed!

        If this cut is not made it cuts flow by a staggering 50%! Which is why we say flow hood open vs. closed are separate items altogether.

        WE have tested; tested and tested as is the VaraRam way and we are very pleased to finally bring you this exiting new kit.

        VaraRam GTO / Holden High Performance Cold Air Intake Kit

        THE VR Performance guarantee!
        We guarantee that you will get 3 tenths or 3mph through the ¼ mile and or 2 tenths or 2mph OVER any other system on the market or we will take the system back and pay shipping both ways!!

        0.0
        Vararam
          • 8% less
          Market price: $299.95, you save $25.00
        • $274.95

          • SKU
            VR-GTO
          • Weight
            12 lbs
        • Manufacturer
          Vararam
        • Disallow Use of Coupons
          No
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