1973 Z28 Camaro Suspension & Chassis Component Information

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)	779.0	536.5
FS87 Camaro (LT)	862.5	563.0

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

Return to 1973 Camaro Data

Part #		Code		Deflection Rate lbs/in		Load @ .71 Spring Camber (LBS)
3992580		DY		95		735

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