Availability
Detroit Speed FN988TA Assembled Center Sections
Not Yet Reviewed
While the Ford 9 in. is known for strength, its design can be noisy and less efficient--issues the 8.8 solved decades ago. The FN988 merges the best of both, featuring a 31-spline Truetrac differential, high-quality bearings, heavy-duty 1350 Series yoke, and five gear ratio options to deliver modern driveline control, strength, and durability--engineer
While the Ford 9 in. is known for strength, its design can be noisy and less efficient--issues the 8.8 solved decades ago. The FN988 merges the best of both, featuring a 31-spline Truetrac differential, high-quality bearings, heavy-duty 1350 Series yoke, and five gear ratio options to deliver modern driveline control, strength, and durability--engineered, tested, and proven the Detroit Speed way.
Detroit Speed FN988 torque arm assemblies are offered with or without REM polished gear sets to further improve the operation of the rear differential assembly. Select a center section designed for your vehicle.
Features and benefits:
* Engineered for strength
-- Cast from nodular iron and machined to exacting tolerances
-- Forged steel bearing caps for high-horsepower reliability
* Quiet, efficient operation
-- Transmits more power to the tires while eliminating gear whine
* Ease of installation
-- Dropout center installs into 9 in. housings and eliminates C-clip axles
* Integral torque arm mounting
-- Refines the packaging and installation of a 9 in. housing in 3rd/4th Gen Camaro applications
* 31-spline Truetrac differential
-- Delivers smooth, predictable power distribution and superior traction
* 1350-Series yoke
-- Heavy-duty construction for high-torque durability
* Built to Detroit Speed standards
-- Precision assembled for performance, reliability, and perfect fit
* Multiple gear ratio options
-- 3.08, 3.31, 3.55, 3.73, and 4.10 gear ratios available
* REM polishing process creates a smooth micro-textured surface on the gearset for enhanced oil retention properties, resulting in reduced heat and friction, increased component life, and quiet, efficient operation (not on all assemblies)
Showing In Stock Items. Show All 10 Items.
FN988 TA CASE 31 SPL TT 3.31 RATIO 1350
Part Number: DSR-070881-331DS
Not Yet Reviewed
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
FN988 TA CASE 31 SPL TT 3.55 RATIO 1350
Part Number: DSR-070881-355DS
Not Yet Reviewed
Estimated Ship Date: Nov 9, 2026 if ordered today
Estimated Ship Date: Nov 9, 2026 if ordered today
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