Authenticity reference

1973 SD-455 Quadrajet carburetor IDs

numbers matching · reported

1973 Pontiac Firebird Trans Am exterior in Cameo White/blue graphics; same-year Trans Am context, not individual-car SD-455 proof. 1973 Pontiac Firebird Trans Am SD-455

Reference Details

Common issue: Replacement Quadrajet or non-SD carburetor installed on an otherwise SD-455 engine
Confidence: reported
Correct value: 7043273 for 1973 manual; 7043270 for 1973 automatic
Where to check: Driver-side rear area of the carburetor body after removing the shaker scoop assembly

Cars With This Authenticity Marker

1 linked car page.

1973 Pontiac

1973 Pontiac Firebird Trans Am SD-455

Factory Pontiac Firebird Trans Am with LS2 SD-455 option

Sources & Documentation

Hemmings Super Duty Firebirds by the Numbers