DSE Assembled Center Section FN988 Torque Arm - 4.10 Ratio - 31-Spline Truetrac - 1982-2002 Camaro / Firebird - 070881-410DS
Put a performance-focused 4.10 gear ratio behind your third- or fourth-generation F-Body with the Detroit Speed FN988 Torque Arm Assembled Center Section. Part number 070881-410DS combines a 4.10 ratio, 31-spline Truetrac differential, integral torque arm mount, and heavy-duty 1350-series yoke in a purpose-built package for 1982-2002 Chevrolet Camaro and Pontiac Firebird applications using a compatible 9-inch axle housing. The FN988 combines the serviceability and packaging benefits of a dropout center section with a Ford 8.8-inch gearset designed for quiet, efficient operation, making it a serious drivetrain solution for Pro Touring, high-performance street, autocross, and track builds.
Detroit Speed engineers the FN988 Torque Arm center section around a high-strength nodular iron case machined to precise tolerances and reinforced with forged steel bearing caps for demanding horsepower and torque loads. Its integral torque arm mount eliminates the additional brackets typically required when adapting a conventional 9-inch-style rear end to a third- or fourth-generation F-Body, helping solve critical packaging challenges underneath the car. The 070881-410DS assembly includes a 31-spline Truetrac differential, Ford Racing gearset, high-quality bearings, and heavy-duty 1350-series yoke. This specific 4.10-ratio version uses standard gears and is not REM polished.
Specifications
- Part Number: 070881-410DS
- Product Type: Assembled Center Section
- Case Series: FN988 Torque Arm
- Gear Ratio: 4.10
- Differential: 31-Spline Truetrac
- Axle Shaft Spline Quantity: 31
- Gear Style: Ford 8.8-inch
- Case Material: Nodular Iron
- Bearing Caps: Forged Steel
- Yoke Style: 1350-Series
- Torque Arm Mount: Integral
- REM Polished: No
- Application Specific: Yes
Features
- FN988 Torque Arm center section engineered for third- and fourth-generation GM F-Body applications
- 4.10 gear ratio for performance-oriented drivetrain combinations
- 31-spline Truetrac differential delivers smooth and predictable torque distribution
- Ford 8.8-inch gearset provides quiet and efficient operation
- Dropout center section installs into compatible 9-inch axle housings
- Integral torque arm mount eliminates additional torque arm brackets commonly required with 9-inch conversions
- High-strength nodular iron case
- Forged steel bearing caps provide additional strength for demanding performance applications
- Ford Racing gearset
- High-quality bearings
- Heavy-duty 1350-series yoke
- Purpose-built design helps address tight F-Body torque arm packaging requirements
- Fully assembled for a performance-ready drivetrain solution
- Designed for Pro Touring, high-performance street, autocross, and competition builds
Fitment
- 1982 Chevrolet Camaro
- 1982 Pontiac Firebird
- 1983 Chevrolet Camaro
- 1983 Pontiac Firebird
- 1984 Chevrolet Camaro
- 1984 Pontiac Firebird
- 1985 Chevrolet Camaro
- 1985 Pontiac Firebird
- 1986 Chevrolet Camaro
- 1986 Pontiac Firebird
- 1987 Chevrolet Camaro
- 1987 Pontiac Firebird
- 1988 Chevrolet Camaro
- 1988 Pontiac Firebird
- 1989 Chevrolet Camaro
- 1989 Pontiac Firebird
- 1990 Chevrolet Camaro
- 1990 Pontiac Firebird
- 1991 Chevrolet Camaro
- 1991 Pontiac Firebird
- 1992 Chevrolet Camaro
- 1992 Pontiac Firebird
- 1993 Chevrolet Camaro
- 1993 Pontiac Firebird
- 1994 Chevrolet Camaro
- 1994 Pontiac Firebird
- 1995 Chevrolet Camaro
- 1995 Pontiac Firebird
- 1996 Chevrolet Camaro
- 1996 Pontiac Firebird
- 1997 Chevrolet Camaro
- 1997 Pontiac Firebird
- 1998 Chevrolet Camaro
- 1998 Pontiac Firebird
- 1999 Chevrolet Camaro
- 1999 Pontiac Firebird
- 2000 Chevrolet Camaro
- 2000 Pontiac Firebird
- 2001 Chevrolet Camaro
- 2001 Pontiac Firebird
- 2002 Chevrolet Camaro
- 2002 Pontiac Firebird
Fitment Note: Designed for 1982-2002 Chevrolet Camaro and Pontiac Firebird applications using a compatible 9-inch axle housing and torque arm configuration. This center section is not intended as a direct replacement for the factory rear axle assembly.
FAQs
What gear ratio and differential are included with 070881-410DS?
This FN988 Torque Arm center section is assembled with a 4.10 gear ratio and 31-spline Truetrac differential.
Why does the FN988 Torque Arm center section use an 8.8-inch gearset?
The FN988 combines a dropout center section designed for a compatible 9-inch housing with an 8.8-inch gearset engineered for quiet and efficient operation. The design also integrates the torque arm mount directly into the center section for improved F-Body packaging.
Will 070881-410DS install in the factory Camaro or Firebird rear axle?
No. This center section is intended for 1982-2002 Camaro and Firebird applications using a compatible 9-inch axle housing and the appropriate torque arm configuration.
Why Buy from Beefcake Racing?
Beefcake Racing is your source for proven performance drivetrain, suspension, and chassis components for serious street, Pro Touring, autocross, and track builds. If you need help matching the Detroit Speed FN988 center section and supporting rear axle components to your Camaro or Firebird, our experienced team can help you put together the right combination. Email sales@beefcakeracing.com or call 1-855-827-7223 for assistance.
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