Body To Frame Mountings; Flreblrd; Underbody Alignment; Flreblrd Body Vibration Dampers - Pontiac Grand Prix Service Manual

FRAME AND BODY MOUNTINGS 2-3
Fig.
2-4
Lift Point Locations
BODY TO FRAME MOUNTINGS
With the use of a perimeter frame, noise isolation from
the body is accomplished with soft butyl-rubber
mounts, see Figues 2-5 and 2-6.
FlREBlRD
UNDERBODY ALIGNMENT
Firebird bodies are of unitized construction.
A
partial
frame supports the front end sheet metal, front
suspension, engine and other mechanical components.
Unitized construction demands that underbody compo-
nents be properly aligned to ensure correct suspension
location. In the event of collision damage it is
important that the underbody be thoroughly checked
and, if necessary, realigned in order to accurately
establish suspension locations.
To assist in checking alignment of the underbody
components, repairing minor underbody damage or
locating replacement parts, the following underbody
dimensions and alignment checking information is
presented.
For additional information see Section 3 of the Fisher
Body Service Manual.
REFERENCE POINT DIMENSIONS
Dimensions to gage holes are measured to dead center
of the holes and flush to adjacent surface metal unless
otherwise specified. The master gage holes adjacent to
the No. 1 body mount (Fig. 2-7) and in the side rails
near the rear spring front attachment are key locations
and should be used whenever possible as a basis for
checking other reference points.
4
LIFTING
-
FlREBlRD
Lifting can be accomplished without adapters when
using a drive-on hoist or with a twin-post type hoist by
making contact with front suspension lower control
arms and rear wheels. Since there is a bolted on stub
frame in front and welded side rails at the rear, the car
may also be lifted at the points illustrated in Fig. 2-7.
Proper adapters must be used to prevent damage to
the various parts of the underbody. Caution should be
exercised so as not to nick the rear springs.
FlREBlRD BODY VIBRATION DAMPERS
All Firebird convertibles contain four body vibration
dampers, one of which is mounted at each corner of
the vehicle as shown -in Fig. 2-9. Rear dampers are
mounted to the vertical quarter panel brace and floor
pan; front dampers are mounted to the radiator
support.
FlREBlRD CONVERTIBLE FLOOR PAN
REINFORCEMENT
Firebird convertibles have a bolt on floor pan
reinforcement as shown in Fig. 2-10. It is of stamped
steel and straddles the drive shaft tunnel.