1990 Pontiac Firebird

1990 Firebird History

Drivers side air bag now standard in the 1990 Firebird. 1990 Pontiac Firebird interior again meets a redesign, this time the changes are much less drastic. Pontiac changes the lower dash and underdash panels in the ’90 Firebird. Accessory switches get new panel above heater and radio controls. Console gets new shift indicator and different leather boot. Steering wheel mounted radio controls disappear from the GTA with the addition of the airbag. 1990 L98 cars were no longer offered with T-Tops due to supposed CAFE restrictions, although 1989 L98 cars were available with T-Tops. Like the 1990 Camaro, the 1990 Firebird also only received a half year production as Pontiac raced to release the 1991. LB9 and L98 platforms updated with new speed density fuel injection. The elimination of the MAF sensor was for cheaper production costs and supposed improved performance.

Yr

Model

Trans

Engine code/type

CR

Displ.

HP

Torque

Induc- tion

Manual std.

Manual opt. (G92)

Auto std.

Auto opt. (G92)

90

RS Firebird

M5,A4

LH0 V6

8.5:1

3.1 (191)

140@4400

180@3600

MFI

3.42

—-

3.23

—-

90

RS Firebird Formula

M5,A4

LO3 V8

9.3:1

5.0 (305)

170@4000

255@2400

TBI

3.08

—-

2.73

—-

90

IROC-Z Formula Trans Am GTA

M5,A4

LB9 V8

9.3:1

5.0 (305)

210@4400

285@3200

TPI

3.08

—-

2.73

—-

90

IROC-Z Formula Trans Am

M5

LB9 V8

9.3:1

5.0 (305)

230@4400

300@3200

TPI

—-

3.42

—-

—-

90

IROC-Z Formula Trans Am GTA

A4

L98 V8

9.7:1

5.7 (350)

245@4400

345@3200

TPI

—-

—-

—-

3.23

Year	Total Production	Firebird	Formula	Trans Am	Trans Am 1LE	GTA
1990	20,553	12,612	4,834	1,056	4	1,447