CCS Oil Catch Can Kit for C7 Corvette, Gen V Crate Engines

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  • **Please call (843-484-3617) or Text (843-484-3617) us at BEFORE ordering to get an estimated ship date.**

  • $349.00

    CCS Oil Catch Can Kit for C7 Corvette, Gen V Crate Engines

    Direct Fit for C7 Corvette

    This kit is designed specifically for the naturally aspirated C7 Corvette and Gen V small block crate engines. The kit includes custom lines and a billet aluminum bracket that bolts directly to the left head.


    Please note this kit is not a direct fit for supercharged LT4 powered vehicles. These vehicles draw crankcase vapors via a port directly under the supercharger, and will require a special adapter fitting to use a catch can (currently in developement).


    This catch can will bolt up to most Gen V small block engine, but 5.3L truck engines are missing the mounting hole used by this kit. The catch will also interfere with the factory air box in the Gen 6 Camaro SS and some truck applications, but may fit with aftermarket cold air intakes. This kit uses the short can with the drain port, so a drain line can be added if the can is difficult to reach for draining.


    A Must Have for the Gen V Small Block Engines

    GM's Gen V small block engines are direct injected, meaning fuel is injected direclty into the combustion chamber, instead of the intake runners. While great for fuel economy, this means the intake port walls and valves will no longer be cleaned by the fuel. This results in excessive carbon build-up on the intake valves; a well documented problem with direct injected engines.


    While carbon build up will not ruin your engine, it will result in reduced performance in the long run. Vaporized oil in the intake manifold severely exarcebates the problem, so it's important to keep the air as clean as possible. Adding a good catch can to the crankcase ventilation system will help reduce this carbon build up and keep your engine cleaner.


    An Improved Oil Catch Can

    Improved Racing set out to design the best air-oil separating catch can we possibly could. We focused on a three simple design goals:


    1. Maximize efficiency: Separate as much vapor from crankcase blow-by fumes as possible with minimal restriction.
    2. Easy to use: The catch can should be simple and enjoyable to use in every aspect including mounting, draining, and cleaning.
    3. Durable: Virtually indestructible. Made from high-quality, reliable components. As with any Improved Racing product, nothing will vibrate loose or come apart under racing conditions.


    The result is the CCS (Catch Can, Sport).



    Highly Efficient Air-Oil Separation


    The CCS's design maximizes air-oil separation efficiency, resulting in a peak separation efficiency of 85-90%. For comparison, none of the competitor's catch cans we tested showed a peak efficiency of more than 60%. These results were achieved on our bench testing system at air flow rates of 0-4.0 CFM and vaporized oil injection rates of 0.20-0.30 grams of oil per minute.


    Tangential Entry Port
    • Air enters the catch can manifold tangentially, causing it to spin.
    • The centrifugal force of the spinning air forces heavier particles to the outside of the manifold, where they combine into larger droplets.
    Stainless Steel Filter
    • Multiple layers of stainless steel mesh of varying porosities are sintered together to comprise a single filter.
    • Effective filter rating is 100 microns. 
    • Filter is made from 316 stainless steel and is washable.
    Multiple O-Ring Seals
    • Three internal seals (shown in green) were used to ensure that no dirty air bypasses the filter. This is a major contributor to poor filtering efficiency and a very common problem we found in other catch cans.
    • One primary O-ring seals the top and bottom half of the catch can (shown in red).
    Anti-Splash-Back Funnel
    • The stamped aluminum funnel prevents fluid in the reservoir from splashing back onto the exit port (another common problem found in some catch cans).
    • The funnel features spiral grooves which serve two purposes:
      1. They help combine oil droplets so they drain quickly into the reservoir.
      2. CFD simulations have shown they help spiral the air, contributing to cyclonic separation.
    Bell Mouth Plenum
    • Extensive R&D went into designing the exit port plenum.
    • The bell mouth shaped sheds oil droplets collected on its outer perimeter, preventing fluid from exiting the catch can.
    • The large bell mouth opening slows air velocity before exiting the catch can and reduce the probability of any fluid becoming entrained and exiting the can.
    3.5 fl oz (104 ml) Reservoir
    • The 3.5 fl oz (104 ml) reservoir is more than sufficient for most engines and features an optional remote drain port.


    No Sight Glass Needed

    Improved Racing's quick-release reservoir is so easy to remove that it eliminates the need for a sight glass. Just push up and twist an 1/8th turn to remove the reservoir and look inside. No more fumbling or endless unscrewing to remove the reservoir.


    No sight glass also means improved durability at higher operating temps. And no more trying to interpret a difficult-to-read sight glass to check your fluid level. Just look inside!

    A powerful wave spring keeps the reservoir locked in place. A safety lock clip is also included just in case you want to be absolutely sure the reservoir cannot be removed.

    Gen V Small Block Specific Mounting Bracket

    Improved Racing's billet machined mounting bracket bolts directly to the left-side head of the Gen V Chevrolet small block engines. This kit is a direct fit for the C7 Corvette as well as Gen V small block crate engines. Please note the catch can will not fit some truck applications because the truck engine blocks are missing the mounting hole used. In some applications, such as the Gen 6 Camaro SS, the catch can will also interfere with the factory airbox but may work with aftermarket cold air intakes.



    Fast & Flexible Mounting Bracket System

    We made the mounting bracket easy to use and remove because some engines bays are tight. Remove the can in seconds by unscewing the green nut. Installing and positioning is just as quick and easy. If you need a little more leverage, just use a 5/8" or 16mm open end wrench on one of the nut's lobes.


    Positive Safety Lock Clip

    The CCS comes with a safety lock clip. It's peace of mind for crash protection or track events where a positive lock mechanism is required. Push to insert, pull to remove.


    Extensive Testing

    Development of the CCS happened over several years and included ANSYS Fluent CFD simulations, extensive bench tests, and on-vehicle street and track tests. Final prototype testing also included a 9-month beta testing program in collaboration with various road racers, drag racers, and drifters.



    Comparative testing included Improved Racing's prototypes and several catch cans from leading competitors. We ensured our catch can will beat the competition in filtration performance while maintaining a similar or lower pressure drop. Bench testing focused on maximizing efficiency at peak blow-by air flow rates of 3.7-4.0 CFM, where most other catch cans lack efficiency. The chart below (click to enlarge) shows some of our bench test results. Proprietary information and competitor's names have been redacted.





    • 2014-2019 Chevrolet Corvette (C7), naturally aspirated, LT1 engine.
    • Bolts to all 6.2 and 6.6 liter Gen V Chevy Small Block crate engines.
    • May interfere with factory air box in some applications.
    • Does not fit 2016+ (Gen 6) Chevrolet Camaro SS due to interference with the factory air box, but may fit with some aftermarket cold air intakes.
    • This kit will bolt to the factory left side cylinder head of most Gen V small block engines. 
      • L82, L84, and L87 engines are not guaranteed to have the cylinder head hole used by the mounting bracket in this kit.
      • Revised Gen 5 small block engines (engines with Dynamic Fuel Management instead of Active Fuel Management) may not have this mounting hole.
      • Check your left side cylinder head to confirm before ordering.





    Port Size
    • -6AN O-ring boss inlet and outlet ports.
    • 3.5 fl oz (104 ml) reservoir.
    • Reservoir, manifold, bracket nut, and plenum are CNC-machined from 6061-T6 aluminum and MilSpec Type II anodized.
    • Filter is made from 316 stainless steel.
    • Anti-splash-back funnel and mounting brackets are stamped from aluminum to minimize weight.
    • Wave spring and hardware are made from stainless steel.
    • 100 micron, multi-layer 316 stainless steel mesh filter is suitable for all engines including vent-to-atmosphere setups.
    • Washable.
    Drain Port
    • No drain port. Reservoir must be removed for draining.
     Parts Included
    • CCS catch can with 3.5 fl oz reservoir
    • Gen V small block (LT) engine specific mounting bracket and hardware
    • Bracket nut
    • Safety lock clip
    • Pre-made inlet and outlet lines with emissions friendly SAE J30 R9 hose and factory style quick connect fittings
    Country of Manufacture
    • United States of America
    • Lifetime warranty


    Part #
    Improved Racing
    Primary Material
    6061-T6 aluminum
    Type II Anodized
    Minimum Operating Temperature
    -30°F (-34°C)
    Maximum Operating Temperature
    250°F (121°C)
    Fluid Capacity
    3.5 fl oz (104 ml)
    Inlet Port Size
    -6AN O-Ring Boss Female
    Outlet Port Size
    -6AN O-Ring Boss Female
    Standards & Certifications
    Milspec Type II Anodizing
    O-Ring Boss Threads per SAE J1926-3 & ASME B1.1
    O-Ring Boss Threads per SAE AS5202
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