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Go to: Rear Axel Information

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1989 TRANS
MX0 --- 55,297
MM5 --- 9,107


Model Weight Base Price Production
Firebird V6 3,083 $11,999 32,376
Firebird V8 3,300 $12,399
Formula 3,318 $13,949 16,670
Trans Am 3,337 $15,999 5,727
GTA 3,486 $20,399 8,081
GTA Turbo 3,486 1,550

Engines:

VIN Code

Transmission

Engine
code/type

Induction

Displacement.

Bore Stroke

Compression

Ratio

Horsepower

Torque

cats Production
S

M5, A4

LB8 60 V6

MPFI

2.8 (173)

3.50 2.99

8.5:1

135@5100

160@3900

1 24,968
E

M5, A4

LO3 90 V8

TBI

5.0 (305)

3.74 3.48

9.3:1

170@4000

255@2400

1 18,362
F

A4

LB9 90 V8

TPI

5.0 (305)

3.74 3.48

9.3:1

190@4000

295@2800

1 6,478
F

M5

LB9 90 V8

TPI

5.0 (305)

3.74 3.48

9.3:1

225@4400

285@3200

2

8

A4

B2L 

(L98)

90 V8

TPI

5.7 (350)

4.00 3.48

9.3:1

235@4400

330@3200

2 13,041
7 A4 LG3 90 V6 MPFI Turbo 3.8 (231) 3.80 3.40 8.0:1 250@4400 340@2800 2 1,555
 
*Note: Flammang, James M. & Kowalke, Ron. 1999. "Standard catalog of American cars 1976-1999". Krause Publications, pp 873

Camshaft Data

Motor Trans

GM 

Part #

Lift Duration

Lobe

Separation

Rocker

Arm Ratio

Horse

 Power

Int. Exh. Int. Exh.
305 LO3

A4/M5

10088155*

.350

.384

179

194

109.0

(108/-112)

170

305 LB9 

A4 

10088155*

.350

.384

179

194

109.0

(108/-112)

190

305 LB9

M5 

10066049*

.415

.430

207

213

117.0

(116/-118)

215

225
350 L98 

A4 

10066049*

.415

.430

207

213

117.0

(116/-118)

235

*roller cams

 
Head Data
Engine GM Part Number Casting Numbers Combustion Chamber Valve Diameter
Intake Exh
305 (LO3) 10159551   cc 1.84" 1.5"
305 (LB9) 10159553   58cc 1.84" 1.5"
350 B2L (L98) 10159552 14101083, 14096217 64cc 1.94" 1.5"

These heads had the "Swirl Flow Design"

* NOTE: These Numbers are not yet confirmed


Go to: 200R4

Go to: 700R4

 

Transmissions:

200R4 Automatic

 

Transmission Code is located on the right side of the transmission case and includes the shift built, assembly plant, model year, application code and production serial number.

 

Example: 1T89TAF0123

Shift Built 

T

Assembly Plant (Three Rivers)

89 

Model Year

TAF 

Application Code (321 V6 Turbo) 

0123

Production Serial Number

 

Code Shift
1 First
2 Second
3 Third

 

700R4 Automatic
Transmission code is located on the right rear oil pan rail and includes the year, model, Julian build date and shift built.
Example:9YPMYXXXXXXXXX267A

9 Model Year (1989)
YP  305 CID Application
M Transmission Type (THM 700-R4)
Build Location (Toledo)
267  Julian Date

A* 

Shift Built (1st)

 

Code 

CID

FK

350
FX 350
YP  305
YW  305
YX  173
YZ  305

 

Build Date Code
Starts with the Julian date (day of the year) on which 1989 production started. The build date code continues with the Julian date until December 31 (365). The sequence then continues until the end of the 1989 production. EXAMPLE: January 20, 1989 would translate to a build date code of 385.

 

Shift Code

Code Shift
A & B  First shift
C & H Second shift
D Day
N Night

 

Note:
In addition to the transmission production code number, all passenger cars have a portion of the vehicle identification number stamped on the transmission. The condensed vehicle identification number consists of the division identification number, model year, assembly plant designation and vehicle build sequence number.

 


The Rear Axle Codes
Is a two letter code stamped on the front passenger side of the axle tube or on an identification tag attached to the carrier cover. It identifies that axle code ratio and if the axle is equipped with the Safe-T-Track option.

RPO Codes

Axel

Code

Ratio  Type Disc/  Drum Manufacturer cover Bolts Carrier Size
G80, BEU  3.27 Posi   Saginaw 10 7.625
G80, GM3 BEW  3.45 Posi   Saginaw 10 7.625
G80, GU4 6HB  3.08 Posi   Saginaw 10 7.625
G80, GU2 6HE  2.73  Posi   Saginaw 10 7.625
G80, 6HF   3.08 Posi   Saginaw 10 7.625
GU4 6HK  3.08 Std   Saginaw 10 7.625
GU6 6HL  3.42 Std   Saginaw 10 7.625
GU2 6HP 2.73 Std   Saginaw 10 7.625
G80, GU5 6HQ  3.23  Posi   Saginaw 10 7.625
G80, GU2 6HT  2.73 Posi   Saginaw 10 7.625
G80, 8ET  2.77 Posi  Disc Borg & Warner 9 7.75
G80, GM3 8EW 3.45  Posi  Disc Borg & Warner 9 7.75
G80, GM3 9ER  3.45 Posi  Disc Borg & Warner 9 7.75
G80, GW6 9EQ  3.27 Posi  Disc Borg & Warner 9 7.75
G80, 9ET  2.77 Posi  Disc Borg & Warner 9 7.75

 


 

Resources:
Amos Press Inc. Catalog of FIREBIRD ID Numbers 1967-1993