1980
Trans-Am Championship		  
       
1/6     Hallet
       
 

 
# 23 - 914/6 - DNF
Zulkowski		 # 26 - 911 SC - 5°
Overby		 # 98 - 911 SC - Winner
Bauer
       
1/6     Portland
       
 

 
# 18 - 911 - DNF
Schroeder
 		 # 23 - 914/6 - DNF
Zulkowski
 		 # 57 - 911 SC - 3°
Shelton
 		 # 59 - 911 SC - DNF
Feodorhoff
 
   

 

  
  # 98 - 911 SC - 2°
Bauer		  
       
5/7     Watkins Glen
       
# 23 - 914/6 - DNF
Zulkowski / Pullyblank
 		 # 26 - 911 SC Targa - DNF
Overby / Harmstad
Gallery		 # 57 - 911 SC - 3°
Shelton / Leven
Gallery		 # 98 - 911 SC - Winner
Bauer / Green
Gallery
       
19/7     Road America
       
# 13 - 911 SC - 23°
Altman		 # 23 - 914/6 - DNS
Zulkowski		 # 57 - 911 SC - Winner
Shelton		 # 98 - 911 SC - 4°
Bauer
       
10/8     Brainerd
       
 

 
# 23 - 914/6 - DNF
Zulkowski		 # 57 - 911 SC - DNF
Shelton		 # 98 - 911 SC - Winner
Bauer
       
23/8     Trois-Rivières
       
 

 
# 5 - 911 - 10°
Bienvenue		 # 23 - 914/6 - DNF
Zulkowski		 # 98 - 911 SC - DNS
Bauer
       
7/9     Westwood
       
# 11 - 914/6 - 13°
Taylor
 		 # 23 - 914/6 - DNF
Zulkowski
 		 # 57 - 911 SC - 2°
Shelton
Gallery		 # 98 - 911 SC - Winner
Bauer
Gallery
       
19/10     Laguna Seca
       
 

 
# 9 - 911 SC - DNF
Herman
 		 # 11 - 911 - DNS
Nylander
 		 # 23 - 914/6 - DNF
Zulkowski
 		 # 45 - 911 - 27°
Neal
 
   

 

  
  # 57 - 911 SC - DNS
Shelton		 # 98 - 911 SC- DNF
Bauer		  
       
25/10     Riverside
       
 

 
# 19 - 911 SC - DNS
Nardi
 		 # 23 - 914/6 - 23°
Zulkowski
 		 # 44 - 914/6 - 25°
Korpiel
 		 # 57 - 911 SC - 6°
Shelton
 
   

 

  
  # 98 - 911 SC- 5°
Bauer