Authenticity reference

1973 SD-455 intake casting

date correctness · 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: 1974 LS2 X intake or non-SD intake represented as correct 1973 SD-455 intake
Confidence: reported
Correct value: LS2 cast into the lower right-front corner for 1973
Where to check: Lower right-front corner of the intake manifold

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