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2001
Chevrolet Corvette Restoration Kit
Rear Drive Axle Description and Operation
The vehicle
is
powered by either the
LS1
or LS6 5.7 liter V-8 engine, VIN G or
S.
Motion
is
transferred
from the engine crankshafUflywheel through the driveline support, propeller shaft, assembly to either the
4L60-E (M30) automatic transmission or the
ZF (MM6) 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.
Pinion position, ring gear position, and carrier bearing preload are determined by shimming procedures.
All models have a 7 5/8 inch ring gear. Each ring gear has specific setup dimensions, A 1 and A2 values,
stamped onto the side area
of
the gear. The
A1
and A2 values are unique to each ring gear/pinion and
are determined during the manufacturers gear/pinion noise and vibration setup and testing. The vehicle
speed sensor reluctor ring
is
incorporated into the outside area
of
the ring gear. The vehicle speed sensor
detects the rotational pulses produced by the reluctor ring and send the signal to the vehicle control
module
(VCM).
The differential assembly
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.
Page 48
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