Z07 vs Z51?
07-08-2013, 12:45 PM
#2
Team Owner
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Two numbers
07-08-2013, 04:57 PM
#4
Burning Brakes
Early Z51 had harsh suspension, later Z51 and Z07 had reduced spring rates over the years. Both have quick steering ratio and both will have J55 big brake package until 95 when it was included on coupe and convertible at no charge...
Z07 included FX3
Z07 included FX3
07-09-2013, 04:23 AM
#7
In '89, Selective Ride Control (FX3) came only in combination with the Performance Handling Package (Z51),
but when you ordered those two, in a strange twist, the car was downgraded to softer, base springs, stabilizer bars and front lower control arm bushings.
Many unsuspecting '89/'90 customers, wanting the stiffer springs and bars, ordered Z51 along with FX3 but never knew their cars had base parts.
It was not until 1991 when a combination of SRC and the stiffer springs and bars was released.
That was RPO Z07, available through 1995.
The Inside Story of C4's Shock Absorber Revolution, Selective Ride Control
by Hib Halverson
but when you ordered those two, in a strange twist, the car was downgraded to softer, base springs, stabilizer bars and front lower control arm bushings.
Many unsuspecting '89/'90 customers, wanting the stiffer springs and bars, ordered Z51 along with FX3 but never knew their cars had base parts.
It was not until 1991 when a combination of SRC and the stiffer springs and bars was released.
That was RPO Z07, available through 1995.
The Inside Story of C4's Shock Absorber Revolution, Selective Ride Control
by Hib Halverson
07-09-2013, 09:49 AM
#8
Racer
In '89, Selective Ride Control (FX3) came only in combination with the Performance Handling Package (Z51),
but when you ordered those two, in a strange twist, the car was downgraded to softer, base springs, stabilizer bars and front lower control arm bushings.
Many unsuspecting '89/'90 customers, wanting the stiffer springs and bars, ordered Z51 along with FX3 but never knew their cars had base parts.
It was not until 1991 when a combination of SRC and the stiffer springs and bars was released.
That was RPO Z07, available through 1995.
The Inside Story of C4's Shock Absorber Revolution, Selective Ride Control
by Hib Halverson
but when you ordered those two, in a strange twist, the car was downgraded to softer, base springs, stabilizer bars and front lower control arm bushings.
Many unsuspecting '89/'90 customers, wanting the stiffer springs and bars, ordered Z51 along with FX3 but never knew their cars had base parts.
It was not until 1991 when a combination of SRC and the stiffer springs and bars was released.
That was RPO Z07, available through 1995.
The Inside Story of C4's Shock Absorber Revolution, Selective Ride Control
by Hib Halverson
On a side note, I find the performance setting is best. All 3 settings is still harsh but the softer settings give a bouncy ride but doesn't really cush the ride at all. I also heard that the ZR1 really makes the FX3 work as intended due to the heavier car all around.
Cheers,
Gary.
07-09-2013, 10:01 AM
#9
Safety Car
100% correct there. Though owning a 1990 I can see why. For the street the base spring is already quite harsh and I suspect the engineers did not want to cop flack of the 1984 car (dumper truck ride) when FX3's intention is to give a smooth ride so they perhaps omitted the harder springs when FX3 is specced for 1990.
On a side note, I find the performance setting is best. All 3 settings is still harsh but the softer settings give a bouncy ride but doesn't really cush the ride at all. I also heard that the ZR1 really makes the FX3 work as intended due to the heavier car all around.
Cheers,
Gary.
On a side note, I find the performance setting is best. All 3 settings is still harsh but the softer settings give a bouncy ride but doesn't really cush the ride at all. I also heard that the ZR1 really makes the FX3 work as intended due to the heavier car all around.
Cheers,
Gary.
Two different design philosophies...one is a Corvette Challenge car from the factory, the other was the ultimate GT cruiser.
BOTH were/are killer cars!
AND, I own 1 of each
07-09-2013, 12:35 PM
#10
In '89, Selective Ride Control (FX3) came only in combination with the Performance Handling Package (Z51),
but when you ordered those two, in a strange twist, the car was downgraded to softer, base springs, stabilizer bars and front lower control arm bushings.
Many unsuspecting '89/'90 customers, wanting the stiffer springs and bars, ordered Z51 along with FX3 but never knew their cars had base parts.
It was not until 1991 when a combination of SRC and the stiffer springs and bars was released.
That was RPO Z07, available through 1995.
The Inside Story of C4's Shock Absorber Revolution, Selective Ride Control
by Hib Halverson
but when you ordered those two, in a strange twist, the car was downgraded to softer, base springs, stabilizer bars and front lower control arm bushings.
Many unsuspecting '89/'90 customers, wanting the stiffer springs and bars, ordered Z51 along with FX3 but never knew their cars had base parts.
It was not until 1991 when a combination of SRC and the stiffer springs and bars was released.
That was RPO Z07, available through 1995.
The Inside Story of C4's Shock Absorber Revolution, Selective Ride Control
by Hib Halverson