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Technical
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Model | Weight | Base Price | Production |
Firebird V6 | 3,102 | $10,999 | 28,973 |
Firebird V8 | 3,300* | $11,399 | |
Formula | 3,296 | $11,999 | 13,475 |
Trans Am | 3,355 | $13,999 | 8,793 |
GTA | 3,406 | $19,922 | 11,214 |
* Note: 89 weight data, 88 Weight data for V8 Firebird was not available
This Section:
Go to: Basic Engine data
Go to: Camshaft Data
Go to: Head Data
VIN Code |
Transmission |
Engine |
Induction |
Displacement. |
Bore | Stroke |
Compression Ratio |
Horsepower |
Torque |
---|---|---|---|---|---|---|---|---|---|
S | M5, A4 | LB8 60°V6 | MPFI | 2.8 (173) | 3.50 | 2.99 | 8.9:1 | 135@5100 | 160@3900 |
E |
M5, A4 |
LO3 90° V8 |
TBI |
5.0 (305) |
3.74 | 3.48 |
9.3:1 |
170@4400 |
255@2400 |
170@4000* | |||||||||
F |
A4 |
LB9 90° V8 |
TPI |
5.0 (305) |
3.74 | 3.48 |
9.3:1 |
195@4000 |
295@2800 |
190@4000* | |||||||||
F |
M5 |
LB9 90° V8 |
TPI |
5.0 (305) |
3.74 | 3.48 |
9.3:1 |
220@4400 |
285@3200 |
215@4400* | |||||||||
8 |
A4 |
B2L (L98) 90° V8 |
TPI |
5.7 (350) |
4.00 | 3.48 |
9.3:1 |
230@4400 |
330@3200 |
225@4400* |
*Note: Flammang, James M. & Kowalke, Ron. 1999. "Standard catalog of American cars 1976-1999". Krause Publications, pp 873
Abbreviations:
A4 - Automatic Transmission 700R4
M5 - 5 Speed Manual Transmission TBI - Throttle Body Injection TPI - Tuned Port Injection MPFI - Multiport Fuel Injection
|
Lift |
Duration |
Lobe |
Rocker |
|
||||
---|---|---|---|---|---|---|---|---|---|
Motor |
Trans |
GM Part Number |
Int. |
Exh. |
Int. |
Exh. |
Separation |
Arm Ratio |
Horse Power |
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 |
350 L98 |
A4 |
10066049 |
.415 |
.430 |
207 |
213 |
117.0 | (116/-118) |
225 |
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
Transmission:
The 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:7YPMYXXXXXXXXX267A
8 | Model Year (1988) |
YP | 305 CID Application |
M | Transmission Type (THM 700-R4) |
Y | 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 1988 production started.
The build date code continues with the Julian date until December 31 (365). The
sequence then continues until the end of the 1988 production. EXAMPLE: January
20, 1988 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 | Manufacturer | cover Bolts | Carrier Size |
G80, GH3, J65 | 4ET | 2.77 | Posi | Borg & Warner | 9 | 7.75" |
G80, GW6, J65 | 4EU | 3.27 | Posi | Borg & Warner | 9 | 7.75" |
G80, GM3, J65 |
4EW |
3.45 | Posi | Borg & Warner | 9 | 7.75" |
G80, GU4 | 6HB | 3.08 | Posi | Saginaw | 10 | 7.625" |
G80, GU2 |
6HE |
2.73 | Posi | Saginaw | 10 | 7.625" |
G80, GU4 |
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" |
GM3 | 7EW | 3.45 | Posi | Borg & Warner | 9 | 7.75" |
1LE, G80, GW6, J65 | 8EU | 3.27 | Posi | Borg & Warner | 9 | 7.75" |
1LE, G80, GM3, J65 | 8EW | 3.45 | Posi | Borg & Warner | 9 | 7.75" |
1LE, G80, GW6, J65 | 9EQ | 3.27 | Posi | Borg & Warner | 9 | 7.75" |
Resources:
Amos Press Inc. Catalog of FIREBIRD ID Numbers 1967-1993