Chassis reference

W72 axle entry

rear axle · factory

A photographed 1977 Trans Am showing Goldenrod Yellow paint, black and red graphics, Trans Am scripts, T/A 6.6 shaker callout, body-color mirrors, and Snowflake wheels; W72 identity, finish, equipment, restoration, and condition remain specific to this car. 1977 Pontiac Firebird Trans Am W72 400

Reference Details

Availability: factory
Limited-slip: Yes
Notes: Engine table lists 3.23 with W72; G80 Safe-T-Track handled as cited differential record.
Ratio: 3.23:1
Type: rear axle

Cars With This Chassis Detail

1 linked car page.

1977 Pontiac

1977 Pontiac Firebird Trans Am W72 400

Factory Pontiac Firebird Trans Am configuration

Sources & Documentation

Tran-Zam.com 1977 Firebird Engines

Tran-Zam.com 1977 Firebird Options