1973 Z28 Suspension & Chassis Component Information

This file is a mess, but I'm trying to consolidate the spring info, the suspension info, and the yearly info into a more readable, manageable and informative package. It'll also make proof-reading and catching screwups and obvious conflicts easier.

Front Suspension: Spring rate: 300 lb./in. Front stabilizer bar 0.938 inch.
Front Springs
Part #   Code   Deflection Rate   Wire dia/Total Coils   Free Height/ Working (IN @ LBS)
3996366   AV   300   .638 / 8.80   17.66 / 11.0 @ 1980
3996367   AW   300   .638 / 8.80   17.86 / 11.0 @ 2040
3998628   CR   300   .651 / 9.20   18.06 / 11.0 @ 2100
3998629   CS   300   .651 / 9.20   18.26 / 11.0 @ 2160
6272883   CU   300   .651 / 9.20   18.46 / 11.0 @ 2220

Rear Suspension: Spring rate: 89-99 lb./in. Rear stabilizer bar 0.69 inch
Rear Springs
Part #   Code   Deflection Rate lbs/in   Load @ .71 Spring Camber (LBS)
3992580   DY   95   735
Steering: Recirculating ball, variable ratio, power assist. 2.8 (or 6) turns, lock to lock, 38.5 ft. turning radius.
Power steering had straight 16:1 ratio and was revalved to give more road feel. Unchanged from 1972.

Steering - Gear, valving & related components
Year   Part Number   Description
1973   7818145   (Camaro - exc P.S. 8 cyl. Pass, exc police)
1973-75   7818138   (Camaro - w/PS, exc. R.T.S, sport susp). (Radial Tuned Suspension?)
1973-75   358938   (Camaro - w/PS) Gear Unit
1973-75   7808369   Camaro (exc sp. hp 350) - valve

Sway bars
Year  Part Number  Description
1973-74 3984557  (Camaro w/spec perf susp) 1.00"
1973-75 481471  (Camaro exc sp. H/per. 350) rear 0.562" diam
1970-75 3983085  (Camaro w/sp. perf susp, Z28) rear 0.688" diam

1973 Camaro Spring Charts

Chart "A", Front/Rear Base Sprung Weight

Model Front Rear
FQ87 Camaro (exc LT) 779.0536.5
FS87 Camaro (LT) 862.5563.0

Chart "B"

RPO Option Weights Front Rear
C60 Air Conditioning 46.5 7.5
D55 Floor Console 7.0 2.0
F41 Spec Perf Susp. 1.0 2.5
L14 (307) 52.5 7.0
L48 (350 4bbl) 61.0 20.0
L65 (350 2bbl) 57.5 7.0
M20 4 speed 2.0 1.0
M38 TH350 7.5 4.0
M40 TH400 14.5 8.0
N40 Power Steering 15.5 0.0
T60 H.D. Battery 7.0 0.0
UMI Radio 3.0 1.0
Z22 RS Package 8.5 1.0
Z28 Special 350 engine 18.0 14.0

Chart "C"

Code Front Weight Part # Code Rear Weight Part #
AE, AF 0 - 820 3996362 PA 0 - 580 480878
AM, AP 821 - 883 3996364 PB 581 - over 494776
AU 884 - 915 3996365      
AV,AW 916 - over 344537      

Z28

Code Front Weight Part #
AV,AW 0 - 918 344537
CR,CS,CU 919 - over 3998629

Spring Details
3996365
480881

Summary/Conclusions/Observations


Last updated: 8/12/1998
Author: MadMike Maciolek

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