I'm putting together a chart of the spring rpo's available in thirdgens. I need the year of the car, the model, and any special suspension info, ie F41, FE2, WS6, etc... The codes I need are the ones that start with 6, 7, 8, and 9. Please post them here or email them to me.

Thanks

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Drew
The lone Thirdgenner of the Apocalypse
predatorman@hotmail.com
My Website
87 Iroc
91 Formula 14.3@98mph
91 RS Convertible
91 Firebird V6
92 S10
98 Grand Am GT

 

mines a 91 z/28 and the rpos are
6zw
7zw
8nl
9nl
hope this helps

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FE2

6ZW (14029397)
7ZW (14029397)
8NL (10018091)
9NL (10018091)

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90 IROC 5.7l (L98)
ram air, K&N's, air foil,Flows

LIKE A ROC

 

WS6:

6ZX
7ZX
8NL
9NL

 

Thanks so far guys. I've got 21 cars as of now with partial information. The more cars I get info on the more likely the conclusions will be accurate.

------------------
Drew
The lone Thirdgenner of the Apocalypse
predatorman@hotmail.com
My Website
87 Iroc
91 Formula 14.3@98mph
91 RS Convertible
91 Firebird V6
92 S10
98 Grand Am GT

 

I'd be interested in your findings when you get them compiled Drew.

 

See this is what happens when you decide you want to know which springs are the best... I've figured a bit out, but I'm still working on GM's code.

 

1984 Z28: 6ZW, 7ZW, 8NN and 9NN

 

92GTA

6ZX
7ZX
8NL
9NL

 

92 Z conv

F41, 6XT,7XT,8NL,9NL.
is this all you need?

Jeremy

------------------
92 Z conv
5-spd B&M shifter
home-made ram air, air foil, headers, no cat, TB bypass, kevlar pads, slotted rotors, BMR panhard, alston SFC, 3.42's
when it warms up Edelbrock STB maybe springs

 

Excellent.

keep em coming guys.

------------------
Drew
The lone Thirdgenner of the Apocalypse
predatorman@hotmail.com
My Website
87 Iroc
91 Formula 14.3@98mph
91 RS Convertible
91 Firebird V6
92 S10
98 Grand Am GT

 

BTTT

 

1991 Z28 1LE
FE2
6DB
7DB
8NN
9NN
Gregg

 

well i found my codes after all...... they are 6ZW,7ZW, 8NL,9NL for an 89 iroc 5.7

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'89 SHAGGY IROC
L98 7r4, all free stuff,T.E.S.,HOOKER CAT BACK,KYB,ACCEL8.8,JET fan sw. etc.
so much to do , so little money

 

1984 H.O. Z28 6ZX 7ZX 8NN 9NN
1984 LG4 Z28 6ZX 7ZX 8NL 9NL
1986 H.O. IROC 6DB 7DB 8NL 9NL
1987 LG4 Z28 6ZX 7ZX 8NL 9NL
1987 L98 IROC 6DB 7DB 8NL 9NL
1987 LB9 IROC 6ZW 7ZW 8NL 9NL
1989 L03 RS 6XU 7XU 8UY 9UY
1989 L98 IROC 6ZW 7ZW 8NL 9NL
1989 LB9 IROC 1LE 6DB 7DB 8NN 9NN
1990 L98 IROC 6ZW 7ZW 8NL 9NL
1990 L03 RS 6XW 7XW 8UZ 9UZ
1992 L03 RS(F41) 6XU 7XU 8NL 9NL
1992 L03 RS Conv(F41) 6XW 7XW 8NM 9NM
1992 L98 Z28 6ZW 7ZW 8NL 9NL
1992 L03 RS(FE1) 6XW 7XW 8UZ 9UZ
1992 L98 RS(B4C) 6ZW 7ZW 8NL 9NL
1992 LH0 RS(FE1) 6XT 7XT 8UZ 9UZ
All spring info. came from build sheets.
Hope this helps!

 

90 IROC..THE NNNs in the rear give it a good ride!
FE2
6ZW
7ZW
8NN
9NN

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Black 90 IROC, L98, A4, 323 gear. SuperRamed 406 in the works!

 

anybody have NNN's they want to sell. most I have found are saggy.

my 89 WS6 has CBW's, and NNL's

 

I found mine for the 84 Firebird.. LG4, anything else you want to know I might be able to tell you, as long as its on the build sheet. There were only 2 digit codes on the sheet, so using your 6,7,8,9 for front rear left right, here it is:

6KR
7XU
8WA
9UZ

Why different ones I have no clue but thats whats on the sheet.
Ill see if I cant find the springs off my 86 around here somewhere, its not on the build sheet.

Got it:
86TA, fully loaded, WS6
6ZX
7ZX
8NB
9NB

[This message has been edited by madmax (edited January 20, 2001).]

 

1987 Formula 350 hardtop
WS6
FE2
82B
82I
6ZX
72X
71A
8NL
829
87L
9NL

I'm sure I have too many, sorry. I didn't know which ones you were looking for.

------------------
87 Formula 350 14.61@94.07 before 2OTL, TCI stall, Nitto's, tubular LCA's & panhard
98 Z28 1LE 13.15@107.59
1LE Owners Association

 

1988 Camaro Sport Coupe
L03, 700R4, speed sensor delete
factory 15in alum wheels

6XW : SPRING, COMPUTER SELECTED, FRONT, LEFT HAND
7XW : SPRING, COMPUTER SELECTED, FRONT, RIGHT HAND
8UX : SPRING, COMPUTER SELECTED, REAR, LEFT HAND
9UX : SPRING, COMPUTER SELECTED, REAR, RIGHT HAND


------------------
1988 Camaro Sport Coupe305TBI-4spdAOD-2.73open in "bought stock" condition. That'll change if it stays around here much longer

 

82 Trans Am hardtop Originally LG4, 4-speed (M67) posi (G80) 3.23 Ratio (GU5)
WS7...... Special Handling Package..The factory did'nt expect to sell very many WS6's and ended up running out of rear disk parts in the middle of the '82 run. All '82's after that were WS6's with drum brakes (JL2) recoded WS7.

Springs...
Front RH/LH..BXZ
Rear RH/LH..NNL

I'll post my '83 codes when i find my build sheet (somewhere in the garage)


------------------
Kenney
82 Trans Am WS7 notchback
83 Trans Am WS6 T-tops
72 Vista Cruiser 455
90 Olds Trofeo
80 K-10 w/snow plow
Painter @ Chevy dealer
GM junkie

 

I found the location on my buildsheet, but I don't see the 9NL that everyone keeps posting. Mine say NNL. If you can decode it, here's my build sheet.



Blocks 15 and 16 are the Front and rear springs in that order.

------------------
87 IROC 350 TPI with less than 10k original miles
www.users.uswest.net/~smoyer/iroc.htm

 

87 Formula with LG4

WS6
FE2
6ZW
7ZW
8NL
9NL

 

Scott, the reason you don't see 9NL or 8NL but rather NNL is because the way GM coded the springs themselves and the rpo's. 8NL and 9NL are exactly the same spring. Both physically are actually NNL springs. But GM codes them as 8NL and 9NL on the rpo's to distinguish the location of the springs.

------------------
Drew
The lone Thirdgenner of the Apocalypse
predatorman@hotmail.com
My Website
87 Iroc
91 Formula 14.3@98mph
91 RS Convertible
91 Firebird V6
92 S10
98 Grand Am GT

 

WS6

6ZW
7ZW
8NC
9NL


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1997 Chevrolet Camaro SS # 379
1992 Pontiac Firebird Formula
1973 Chevrolet Camaro RS/Z28
1969 Chevrolet Camaro SS 350

 

86 WS6

6zx
60P
7ZW
8NB
81A
9NB

 

86 WS6

6zx
60P
7ZW
8NB
81A
9NB

------------------
1986 Black & Gold WS6
Trans AM...The Muscle Car Lives
...Its just not at home at the moment...

www.members.home.net/nosaint

 

86 Camaro Iroc

6ZX
7ZX
8NM
9NM

 

'83 T/A w/WS6

Front: BZW
Rear: NNM

Finally found my build sheet.

------------------
Kenney
82 Trans Am WS7 notchback
83 Trans Am WS6 T-tops
Painter @ Chevy dealer
GM junkie

[This message has been edited by 82 TRANS AM (edited May 28, 2001).]

 

6zw
7zw
8nl
9nl

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1992 Heritage Z/28
5.7 TPI
Auto Tranny
White w/red stripes
Grey Leather Interior
Alpine CD w/alpine's all around
2 12' subs in custom "camaro" box in trunk
G92 performance package w/ a/c
Flowmaster exhaust
only 14k miles on her!

 

This is really old and the project was never completed... GM used whatever springs they wanted in whatever car they wanted.