LS7 C6 Corvette Z06 Crank Scraper & Windage Tray Kit

As low as $299.00

Part #
EGM-740C Configurator

Free shipping on USA orders over $99

  • Increases horsepower by up to 10 WHP
  • Reduces oil starvation and aeration
  • 70% stronger and 10% lighter than the factory windage tray
  • Completely bolt-on installation
  • Made in the USA and backed by a lifetime warranty

Improved Racing Warranty Badge

Part # EGM-740C Configurator
Customize LS7 C6 Corvette Z06 Crank Scraper & Windage Tray Kit
 In stock
 In stock
 In stock
Out of stock
Ships by Jun 21
  Drop Ship
   Special Order

* Required Fields

Your Customization
LS7 C6 Corvette Z06 Crank Scraper & Windage Tray Kit
LS7 C6 Corvette Z06 Crank Scraper & Windage Tray Kit

In stock

Free shipping on USA orders over $99


    Customers Also Bought

    Improved Racing designed this crankshaft scraper and windage tray kit specifically to improve oiling, reduce oil starvation, and free up horsepower on the C6 Z06 Corvette (and other dry sump LS7 applications).

    Improved Racing's crankshaft scrapers help reduce oil starvation by closely contouring the crankshaft and rods to remove excess oil, ensuring oil is quickly returned to the bottom of the sump. Crank scrapers also help reduce parasitic drag and windage losses caused by excess oil on the crank, which reduces rotational mass and results in dyno-proven gains of 5-10 HP at the wheels.

    Our scrapers are CNC-machined from 0.190" thick, 6061-T6 billet aluminum. The crankshaft scraper kits also include an aluminum windage tray that is 10% lighter, 70% stronger, and provides more clearance for aftermarket rods than the factory windage tray. The included windage tray bolts directly to the scraper with self-clinching lock nuts instead of the main cap studs, allowing it to be installed without disturbing the scraper alignment.

    The crankshaft scrapers and windage trays were designed in CAD software using actual GM part models, prototyped, and test-fitted for a completely bolt-on fit in every listed application. The factory oil pump pickup tube is kept in the factory location with no compromises or modifications required.

    Crank Scraper kits are compatible with factory or ARP main cap studs. Reducer spacers as well as Class 10, flanged zinc-plated steel distorted thread lock nuts are included for use with factory main cap studs. For ARP main cap studs, use the nuts supplied by ARP.

    Features and Benefits

    • Increases horsepower by up to 10 WHP
    • Scraper and windage tray assembly is 70% stronger and 10% lighter than the factory windage tray
    • Reduces oil starvation and aeration
    • 100% bolt-on installation
    • Windage tray is secured with locking, vibration-resistant self-clinching nuts
    • Includes reducer bushings and upgraded main cap stud lock nuts for factory studs
    • Compatible with factory LS7 crankshaft, factory LS7 rods, and factory or ARP main studs
    • Lifetime Warranty
    • Made in the USA


    • CNC-machined aluminum crank scraper
    • Aluminum windage tray
    • Self-clinching windage tray-to-scraper mounting hardware
    • Flanged, locking scraper-to-main cap stud mounting nuts (for use with factory studs only)
    • 4 x reducer bushings for centering the scraper when using factory main cap studs

    Technical Specifications

    • Material: 6061-T6 aluminum (scraper), 5052-H32 aluminum (windage tray)
    • Weight: 2.45 lbs (1.1 kg) (complete assembly)


    • Compatible with the following oil pans:
      • 2005-2013 Chevrolet C6 Corvette Z06, 7.0L LS7, dry-sump
      • Other vehicles running the dry-sump LS7 powertrain
    • Does NOT fit engines with stepped main caps (Dart LS Next engines).
    • These scrapers are not compatible with aftermarket crankshafts with center counterweights (8 counterweights). They are compatible with factory-style, 6-counterweight crankshafts only.
    • Please use the crankshaft scraper application table to select the correct part number for your application.
    • Oil pan must have a minimum depth of 1.70'', not including the gasket, to clear the windage tray. See image below for reference.

    Improved Racing Crankscraper Windage Tray Clearance

    Oil pan clearance required to clear the crankscraper and windage tray combination

    Part #
    EGM-740C Configurator
    Primary Material
    6061-T6 aluminum
    Clears Crankshaft Stroke
    Clears Connecting Rods
    Group 0 (Factory Rods)
    Group 1 (Most H-Beam Rods)
    Group 2 (Most I-Beam Rods)
    Callies Compstar H-beam
    Callies Ultra I-beam
    Eagle CRS6125BLW
    Eagle CRS6100L3D
    Eagle CRS6125O3D
    Eagle CRS6125O3D2000
    All I-Beam Rods
    All others not listed
    All OEM LS Rods Except LS7 & LS9
    GM OEM LS7 Rods
    GM OEM LS9 Rods
    K1 012AE25613
    K1 012AE25613ST
    K1 012AE25613L
    K1 012AE25610
    All Others Not Listed
    All I-Beam Rods
    All H-Beam Rods
    All H-Beam Rods
    All I-Beam Rods
    Most Other Brand I-Beam Rods
    Most Other Brand H-Beam Rods Not Listed in Group 2
    All I-Beam Rods
    All H-Beam Rods
    All I-Beam Rods
    All H-Beam Rods
    Texas Speed
    All Rods
    Thompson Motorsports
    All H-Beam Rods
    Fits Oil Pan
    Chevrolet Corvette Z06 (C6)
    LS7 Dry Sump
    Improved Racing
    Instruction Manuals
    Write Your Own Review
    You're reviewing:LS7 C6 Corvette Z06 Crank Scraper & Windage Tray Kit
    Your Rating
    You May Also Like