....
Z51
Safety Car
Joined: Nov 2006
Posts: 3,860
Likes: 5
From: Tampa FL
Are you sure they weren't F55 badges? It could have been a Z51 and the factory put F55 badges on by mistake. Or it could have been a ZR1 with Z51 badges or maybe ...
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Every 2027 Corvette Engine Explained
Joe Kucinski
Designer Imagines A Corvette That Looks More Like a Corvette Than the Corvette
Verdad Gallardo
10 Ugly Corvettes That We Still Kinda Love
Joe Kucinski
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Race Director
Joined: Apr 2007
Posts: 13,007
Likes: 0
From: Happiness is Busch in Victory Lane!
St. Jude Donor '09 & '12, '14
In all Seriousness...
In the auto business RPO codes are given to different options on cars.
the Z designation is a GM code word only approved by the owners of GM themselves.
To get a Z designation you must meet criteria that F cars simply cannot achieve.
For example.
Zr1
Z06
Z51
Sub-Par performance models
F55
FE1
This is classified internal GM information at one point but I bring it to you exclusively on CF.
In the auto business RPO codes are given to different options on cars.
the Z designation is a GM code word only approved by the owners of GM themselves.
To get a Z designation you must meet criteria that F cars simply cannot achieve.
For example.
Zr1
Z06
Z51
Sub-Par performance models
F55
FE1
This is classified internal GM information at one point but I bring it to you exclusively on CF.
Advanced
Joined: Aug 2009
Posts: 75
Likes: 0
In all Seriousness...
In the auto business RPO codes are given to different options on cars.
the Z designation is a GM code word only approved by the owners of GM themselves.
To get a Z designation you must meet criteria that F cars simply cannot achieve.
For example.
Zr1
Z06
Z51
Sub-Par performance models
F55
FE1
This is classified internal GM information at one point but I bring it to you exclusively on CF.
In the auto business RPO codes are given to different options on cars.
the Z designation is a GM code word only approved by the owners of GM themselves.
To get a Z designation you must meet criteria that F cars simply cannot achieve.
For example.
Zr1
Z06
Z51
Sub-Par performance models
F55
FE1
This is classified internal GM information at one point but I bring it to you exclusively on CF.
