"Sportsman Series"
C6/A6 Automatic Corvette IRS Street/Track Differential

We offer these Sportsman Series rear differential upgrade packages for those that want neck-snapping acceleration that only a performance gear change can deliver! Our "Sportsman Series" lines of Corvette IRS Differentials are built for the Corvette enthusiast who wishes to have a professionally prepared, high performance street/track differential for their C6 automatic Corvette.

Unlike O.E. GM differentials that are limited to stock gear ratios and slapped together on a production line where assembly speed is more important that build quality... Each DTE Sportsman Series Corvette IRS Street/Track Differential is available in a wide selection of gear ratios to suit your specific application and each unit is entirely prepared, hand assembled, and blueprinted right here in the USA! Our in-house production capability enables us to maintain a very tight quality control process. That process guarantees outstanding build quality every time.

Application:

  • 2006-2009 C6 Corvette
  • A6 Automatic 6-Speed Transmission
  • Stage 3: High performance street and moderate track use
  • Stage 4: Ultra high performance street & track applications

Stage 3 "Sportsman Series" Street/Track Differential

  • Disassembly to bare case for component inspection
  • Power steam cleaning, hand washing, & bead blasting of all differential components to a like-new finish
  • Machining of specific components for improved fitment & functionality over stock
  • Proprietary oiling improvements
    • Extends bearing & clutch pack life through cooler operation
  • A choice of 2.56, 2.73, 2.93, 3.15, & 3.42 ratios additionally prepared for performance applications
  • Cryogenically treated ring & pinion set
    • Increases gear set longevity, wear resistance, & promotes quiet operation
  • DTE's own design/manufactured m4340-300m left hardened output shaft
    • Replaces weaker OEM shaft that breaks in HP applications & is of superior strength to C6-Z06 shaft
  • DTE's own design/manufactured m4340-300m right hardened output shaft
    • Replaces weaker OEM shaft that breaks in HP applications & is of superior strength to C6-Z06 shaft
  • DTE's own design/manufactured billet aluminum HD pinion shaft support
    • Replaces weaker, crack prone OEM cast aluminum parts to prevent pinion shaft deflection & is of superior strength to the cast aluminum C6-Z06 support
  • New GM seals, O-rings, & gaskets
  • New Timken bearings & races
  • New HD 16-disc carbon clutch packs
    • Increased torque bias; withstands higher heat & torsional stress loads; longer lasting; won't contaminate differential oil as they wear
  • Heavy duty cone springs
  • Two, 1-quart bottles of 75w/140 synthetic gear lubricant included
  • Differential exterior prepped for a factory appearance, color, & corrosion protection
  • Professional in-house machining, assembly, & blueprinting
  • Written 2 year or 24K mile warranty*

Differential exchange or build your supplied core: $2945
In-house installation & includes custom TCM shift-point calibration: $3495

Options:

  • Shot peen & micro polishing of ring & pinion set: $260

Stage 4 "Sportsman Series" Street/Track Differential

  • Disassembly to bare case for component inspection
  • Power steam cleaning, hand washing, & bead blasting of all differential components to a like-new finish
  • Machining of specific components for improved fitment & functionality over stock
  • Proprietary oiling improvements
    • Extends bearing & clutch pack life through cooler operation
  • A choice of 3.15 & 3.42 ratios additionally prepared for performance applications
  • Micro polishing of ring & pinion set
    • Reduces operational heat/parasitic drag
  • Shot peened ring & pinion set
    • Greatly increases gear set impact load capacity to withstand racing applications
  • Cryogenically treated ring & pinion set
    • Increases gear set longevity, wear resistance, & promotes quiet operation
  • Quaife carrier unit
    • Replaces OEM clutch pack carrier unit w/automatic torque biasing, helical gear limited slip differential
  • DTE's own design/manufactured m4340-300m left hardened output shaft
    • Replaces weaker OEM shaft that breaks in HP applications & is of superior strength to C6-06Z shaft
  • DTE's own design/manufactured m4340-300m right hardened output shaft
    • Replace weaker OEM shaft that breaks in HP applications & is of superior strength to C6-06Z shaft
  • DTE's own design/manufactured billet aluminum HD pinion shaft support
    • Replaces weaker, crack prone OEM cast aluminum parts to prevent pinion shaft deflection & is of superior strength to the cast aluminum C6-Z06 support
  • New GM seals, O-rings, & gaskets
  • New Timken bearings & races
  • Two, 1-quart bottles of 75w/140 synthetic gear lubricant included
  • Differential exterior prepped for a factory appearance, color, & corrosion protection
  • Professional in-house machining, assembly, & blueprinting
  • Written 2 year or 24K mile warranty*

Differential exchange or build your supplied core: $4249
In-house installation & includes custom TCM shift-point calibration: $4799

Differential Shipping: FedEx fully insured ground shipping to lower 48 states: $115

Differential Core Charge: $1800

  • 100% refundable when good, undamaged core is returned within 15 days of new differential delivery
  • Any good, complete, unbroken, & assembled A6-automatic differential core in working order may be used for trade-in.

*Whichever comes first. Warranty excludes racing application use, failure due to abusive wheel hop, low oil level, infrequent lube change intervals, differential selected that is under-rated for application, etc. See provided policies/warranties for complete details.