Classic Muscle
Search cars, engines, parts...

Search Classic Muscle

Enter at least two characters to search the archive.

Enter at least two characters to search the archive.

Authenticity reference

Factory powertrain

numbers matching · documented

Reference Details

Common issue
A later 421, added Tri-Power, converted four-speed or replacement axle is treated as factory-installed. · 1965 Pontiac Grand Prix
Confidence
documented · 1965 Pontiac Grand Prix
Correct value
The engine, induction, transmission and axle match the individual billing history and factory power-team schedule · 1965 Pontiac Grand Prix
Where to check
PHS documents, engine unit code and dates, carburetion, transmission identifiers and axle code · 1965 Pontiac Grand Prix
Common issue
A later 421, added Tri-Power, converted four-speed or replacement axle is treated as factory-installed. · 1966 Pontiac Grand Prix
Confidence
documented · 1966 Pontiac Grand Prix
Correct value
Engine, induction, transmission and axle agree with the individual billing history and factory power-team schedule · 1966 Pontiac Grand Prix
Where to check
PHS documents, engine code and dates, carburetion, transmission identifiers and axle code · 1966 Pontiac Grand Prix
Common issue
A later 400 or 428, converted four-speed, replacement carburetor or axle is treated as factory-installed. · 1967 Pontiac Grand Prix
Confidence
documented · 1967 Pontiac Grand Prix
Correct value
Engine, induction, transmission and axle agree with billing history and the factory power-team schedule · 1967 Pontiac Grand Prix
Where to check
PHS documents, engine code and dates, carburetor, transmission identifiers and axle code · 1967 Pontiac Grand Prix

Cars With This Authenticity Marker

3 linked car pages.

Sources & Documentation