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Authenticity reference

Driveline match

date correctness · reported

Evidence graphic summarizing 1971 GTO 455 HO authenticity markers and common misidentification risks. 1971 Pontiac GTO 455 HO

Reference Details

Common issue
Road-test axle ratios generalized to every car or undocumented drivetrain swaps omitted. · 1971 Pontiac GTO 455 HO
Confidence
reported · 1971 Pontiac GTO 455 HO
Correct value
Transmission and axle should match PHS/build records, engine path, and physical stamp/code evidence. · 1971 Pontiac GTO 455 HO
Where to check
Transmission tags/stamps, axle tube stamp, PHS paperwork, build sheet, and date-code evidence · 1971 Pontiac GTO 455 HO
Common issue
Road-test axle ratios generalized to every car or undocumented drivetrain swaps omitted. · 1971 Pontiac GTO Judge 455 HO
Confidence
reported · 1971 Pontiac GTO Judge 455 HO
Correct value
Transmission and axle should match PHS/build records, engine path, and physical stamp/code evidence. · 1971 Pontiac GTO Judge 455 HO
Where to check
Transmission tags/stamps, axle tube stamp, PHS paperwork, build sheet, and date-code evidence · 1971 Pontiac GTO Judge 455 HO
Common issue
A desirable four-speed or axle claim applied without car-specific evidence. · 1972 Pontiac GTO 455 HO
Confidence
reported · 1972 Pontiac GTO 455 HO
Correct value
Transmission and axle should match paperwork, engine path, and physical stamp/code evidence. · 1972 Pontiac GTO 455 HO
Where to check
Transmission tags/stamps, axle tube stamp, PHS paperwork, build sheet, and date-code evidence · 1972 Pontiac GTO 455 HO

Cars With This Authenticity Marker

3 linked car pages.

Sources & Documentation