The factory differential assembly for a C5 Corvette is available in three gear ratios. The 3.42 ratio axle is used in all manual transmission applications. The 2.73 ratio axle is standard equipment for automatic transmission applications with an optional 3.15 ratio axle available. Motion is transferred from the engine crankshaft/flywheel through the driveline support, propeller shaft, assembly to either the 4L60-E (M30) automatic transmission or the T56 (MM6/M12) 6-speed manual transmission.
The splined output shaft of the transmission drives the pinion, which in turn, rotates the ring gear and differential case assembly. The limited slip differential distributes torque/power to the rear wheels via individual axle shaft assemblies. The limited-slip differential is of a conventional separator plate and friction disc type design.
The differential housing, side covers, pinion housing, and differential case halves are constructed of cast aluminum. The internal components incorporate a hypoid gear set, ring and pinion, carrier assembly, and pinion housing assembly. The pinion is supported in a pinion housing by tapered roller bearings. The pinion is positioned rearward of the ring gear centerline.
Learn more about RKT Performance’s Basic Performance Upgrade Package for 1997 – 2004 C5 Corvettes.