It is fairly common knowledge that the 1988 cars had improved
suspension. The multi link rear suspension is far superior to
the '84-'87 suspension and while the '88 engine cradle and
suspension is not a direct fit in the early cars, it can be
installed with some minor modification. The installation of the
cradle itself is accomplished by slotting the rear mounting
holes and changing the width spacing on the forward cradle
mounts. This is a fairly simple operation, requiring only hand
tools and limited skill. The complicated part is properly
locating the strut tower, without upsetting the suspension
geometry. The engine cradle adapters that we supply mount up to
the early car strut towers in the standard position, but off-set
the strut forward of the original '84-'87 strut location to
properly locate it for the '88 suspension. Due to space
constraints, the standard diameter springs can no longer be
used. The off-set strut hats are therefore designed for use with
2.5" I.D. springs found in our coil-over strut conversion kits
and coil-over strut assemblies. Kits include all the necessary
bushings and hardware for an easy installation.
The ' 88 cradle mounts solidly to the
chassis, upgrading eliminates the need to install urethane
or solid mounts in the early cradle in order to tighten up
the rear suspension.
The ' 84-' 87 rear control arms pivot
with big diameter, soft rubber bushings whereas the ' 88
links are smaller, harder and tighter.
The ' 84-' 87 rear suspension has a
severe ' bump steer ' problem which the ' 88 does not have
(this justifies doing the conversion by itself ).
The ' 88 rear knuckle mounts the
slightly bigger, vented. ' 88 brake rotor which is an
improvement over the earlier car brake.
With the aid of coil-over conversion
kits, the early struts will work properly with the ' 88
Axles are interchangeable between early
and late cars.
If your are doing the cradle conversion and
intend to order the 12" brakes please make sure you state all
the application details clearly. The 12 " vented brake kit for
the' 88 cars are broken into two sections, front and rear. Note
also that we have available, replacement tubular suspension
links for the ' 88 rear, in both polyurethane and spherical
bearing style, pivots.
Part #F043 Strut tower adapters
Part #F001A Strut tower adapters with coilover kit
If you already have our coil-over conversion kit, you
will only need the F043 Adapters if not, you will only
need the F001A kit which includes both the adapters and
the rear coil-over kit