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Authenticity reference

Engine displacement claim

numbers matching · reported

Reference Details

Common issue
Generic 1967 Buick V-8 evidence used to infer original GS-400 drivetrain. · 1967 Buick GS 400
Confidence
reported · 1967 Buick GS 400
Correct value
The GS 400 used Buick's 400 CID four-barrel V8; engine-number and casting-date validation requires car-specific service and parts evidence. · 1967 Buick GS 400
Where to check
Engine block stamping and supporting drivetrain documentation. · 1967 Buick GS 400
Common issue
Generic Buick big-block references can be incorrectly substituted for the target-specific GS 400 engine evidence. · 1968 Buick GS 400
Confidence
documented · 1968 Buick GS 400
Correct value
400 cu in Buick V-8 for GS 400 in the factory AMA engine table. · 1968 Buick GS 400
Where to check
Factory AMA engine specification pages; confirm individual-car engine stamping/casting through service and parts references. · 1968 Buick GS 400

Cars With This Authenticity Marker

2 linked car pages.

Sources & Documentation