Statistical Data
 
The National Registry for 1968 Z/28s began in March 2001. As of May 17, 2006, 359 1968 Z/28s have been located and documented. Listed below are the statistical highlights.
 
Plant Production:
Los Angeles Plant: 21% Norwood Plant: 79%    
 
Approximately 76% of the Z/28s were built in the last 5 production months of the year (March 1968 through July 1968). Early production 1968 Z/28s were very rare. Only 5% were built in the first 4 months (August 1967 through November 1967).
 
Exterior Paint Colors:
Tuxedo Black: 2%
Ermine White: 4%
Grotto Blue: 2%
Fathom Blue: <1%
Palomino Ivory: 0%
Island Teal:<1%
Ash Gold: 4%
Grecian Green: <1%
Rallye Green: 7%
Butternut Yellow: 4%
Tripoli Turquoise: <1%
Teal Blue: 2%
Cordovan Maroon: 2%
Corvette Bronze: 11%
British Green: 21%
Seafrost Green: 4%
Matador Red: 8%
Lemans Blue: 21%
Sequoia Green: 4%
Special Order Paint: 3%
(2 car was special ordered without Stripes)
 
White Vinyl Top: 3% Black Vinyl Top: 16% Convertible: 1 Car  
 
Interior Colors:
Black:68%
Blue: 11%
Gold: 5%
Red: 3%
Turquoise: 0%
Ivory: 2%
Ivory Houndstooth: 1%
Black Houndstooth: 7%
Parchment White: 3%
 
Standard Interior: 71%
Bench Seat: 1 car
Custom Interior: 29%
Seat Head Rests: 3%
   
 
Rally sport Z/28s: 30%
Spoilers: 47%
Console/Gauges: 54%  
(Only 17 cars have a console without the gauges)
 
Power Steering: 13%
 
Standard Air Cleaner: 92%
Cowl Plenum: 7%
Factory Headers: 3%  
(Cowl Plenum option was a much rarer option for the Z/28 in 1968 versus 1967. This lack of popularity may have been one factor that caused GM to go to the new cowl induction hood option in 1969). 7 cars have the cowl plenum and factory headers.
 
Its very difficult to verify this, but approximately 40% of the documented cars still have their original engine block and transmission case. I expect this number to decline as more cars are documented.
 
Transmission:
M21: 88%
M22: 8%
M20: 4%  
 
Rear Axle Ratio: (all cars have 12 bolt rear axle housings and Positraction)
3:07 - 1%
3:31 - 2%
3:55 - 5%
3:73 - 57%
4:10 - 27%
4:56 - 6%
4:88 - 2%
   
 
Original Owners of 1968 Z/28s - 3%
Unrestored Cars - <9%
 
2006 Statistical Data in printable format
2005 Statistical Data in printable format
2004 Statistical Data in printable format
2003 Statistical Data in printable format

Last updated 6/01/06