Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
12032182) - 2019 - crc - 5/8/18
164 Driving and Operating
ZR1 FEB suspension equipped
vehicles can be lowered 12 mm in
the front for optimal track
performance. Lowering the vehicle
should be completed prior to the
track suspension alignment. The
front spring outboard ends must be
unloaded from the front control arms
in order to adjust the spring cushion
adjuster screws upward by
approximately 6–9 mm to achieve
the lowered condition. Driving on
the public roads in this condition is
not recommended.
Caution
Failure to unload the front spring
outboard ends before adjusting
the spring cushion adjuster
screws could damage the spring.If the vehicle is a Z51, Grand Sport,
Z06, or ZR1, the racing and
competitive driving wheel alignment
settings should be set as
described here:
.
Z51 Performance
Package –remove one washer
from each upper control arm to
body bolt attachment (both front
and rear).
. Grand Sport, Z06, and
ZR1 models –do not remove
washers from front or rear upper
control arm bolts.
Proceed by adjusting the lower
control arm cam bolts until
alignment is within specifications.
Alignment values are targets. See
your dealer for tolerances.
After track use, reinstall washers
and reset to factory alignment
settings.
Front (per corner)
. Caster: +7.0 degrees
. Camber: -2.0 degrees
. Toe: 0.05 degrees toe in Rear (per corner)
.
Caster: 0 degrees
. Camber: -2.0 degrees
. Toe: 0.05 degrees toe in
Thrust Angle: 0 degrees
Rear Axle Fluid
Caution
During a first time track or racing
event, high rear axle
temperatures can occur. Damage
could be caused to the rear axle
and would not be covered by the
vehicle warranty. Do not drive as
long or as fast the first time the
vehicle is driven on the track or
raced.
Axles must have 2414 km (1,500 mi)
before being used in track driving.
The rear axle fluid temperatures
may be higher than when driving in
severe conditions. Drain and refill
with new fluid after the first racing or
competitive driving event, and then
