1956 (Champion: Jimmy Bryan)
1. Indianapolis 500 (USA), May 30-Pat Flaherty (USA)-Watson-Offenhauser
2. Milwaukee (USA), Jun 10-Pat Flaherty (USA)-Watson-Offenhauser
3. Langhorne (USA), Jun 24-George Amick (USA)-Kuzma-Offenhauser
4. Darlington (USA), Jul 4-Pat O’Connor (USA)-Templeton-Offenhauser
5. Lakewood Park (USA), Jul 14-Eddie Sachs (USA)-Hillegass-Offenhauser
6. Springfield (USA), Aug 19-Jimmy Bryan (USA)-Kuzma-Offenhauser
7. Milwaukee (USA), Aug 26-Jimmy Bryan (USA)-Kuzma-Offenhauser
8. Du Quoin (USA), Sep 3-Jimmy Bryan (USA)-Kuzma-Offenhauser
9. Syracuse (USA), Sep 8-Tony Bettenhausen (USA)-Kuzma-Offenhauser
10. Indiana State Fairgrounds (USA), Sep 15-Jimmy Bryan (USA)-Kuzma-Offenhauser
11. Sacramento (USA), Oct 21-Jud Larson (USA)-Watson-Offenhauser
12. Phoenix (USA), Nov 12-George Amick (USA)-Lesovsky-Offenhauser

1957 (Champion: Jimmy Bryan)
1. Indianapolis 500 (USA), May 30-Sam Hanks (USA)-Epperly-Offenhauser
2. Langhorne (USA), Jun 2-Johnny Thomson (USA)-Kuzma-Offenhauser
3. Milwaukee (USA), Jun 9-Rodger Ward (USA)-Lesovsky-Offenhauser
4. Detroit (USA), Jun 23-Jimmy Bryan (USA)-Kuzma-Offenhauser
5. Lakewood Park (USA), Jul 4-George Amick (USA)-Lesovsky-Offenhauser
6. Springfield (USA), Aug 17-Rodger Ward (USA)-Lesovsky-Offenhauser
7. Milwaukee (USA), Aug 25-Jim Rathmann (USA)-Epperly-Offenhauser
8. Du Quoin (USA), Sep 2-Jud Larson (USA)-Watson-Offenhauser
9. Syracuse (USA), Sep 7-Elmer George (USA)-Watson-Offenhauser
10. Indiana State Fairgrounds (USA), Sep 14-Jud Larson (USA)-Watson-Offenhauser
11. Trenton (USA), Sep 29-Pat O’Connor (USA)-Kuzma-Offenhauser
12. Sacramento (USA), Oct 20-Rodger Ward (USA)-Lesovsky-Offenhauser
13. Phoenix (USA), Nov 11-Jimmy Bryan (USA)-Kuzma-Offenhauser

1958 (Champion: Tony Bettenhausen)
1. Trenton (USA), Mar 30-Len Sutton (USA)-Kuzma-Offenhauser
2. Indianapolis 500 (USA), May 30-Jimmy Bryan (USA)-Epperly-Offenhauser
3. Milwaukee (USA), Jun 8-Art Bisch (USA)-Kuzma-Offenhauser
4. Langhorne (USA), Jun 15-Eddie Sachs (USA)-Kuzma-Offenhauser
5. Lakewood Park (USA), Jul 4-Jud Larson (USA)-Watson-Offenhauser
6. Springfield (USA), Aug 16-Johnny Thomson (USA)-Kuzma-Offenhauser
7. Milwaukee (USA), Aug 24-Rodger Ward (USA)-Lesovsky-Offenhauser
8. Du Quoin (USA), Sep 1-Johnny Thomson (USA)-Kuzma-Offenhauser
9. Syracuse (USA), Sep 6-Johnny Thomson (USA)-Kuzma-Offenhauser
10. Indiana State Fairgrounds (USA), Sep 13-Eddie Sachs (USA)-Kuzma-Offenhauser
11. Trenton (USA), Sep 28-Rodger Ward (USA)-Lesovsky-Offenhauser
12. Sacramento (USA), Oct 26-Johnny Thomson (USA)-Kuzma-Offenhauser
13. Phoenix (USA), Nov 11-Jud Larson (USA)-Lesovsky-Offenhauser

1959 (Champion: Rodger Ward)
1. Daytona (USA), Apr 4-Jim Rathmann (USA)-Watson-Offenhauser
2. Trenton (USA), Apr 19-Tony Bettenhausen (USA)-Kuzma-Offenhauser
3. Indianapolis 500 (USA), May 30-Rodger Ward (USA)-Watson-Offenhauser
4. Milwaukee (USA), Jun 7-Johnny Thomson (USA)-Lesovsky-Offenhauser
5. Langhorne (USA), Jun 14-Van Johnson (USA)-Kurtis-Offenhauser
6. Springfield (USA), Aug 22-Len Sutton (USA)-Kuzma-Offenhauser
7. Milwaukee (USA), Aug 30-Rodger Ward (USA)-Watson-Offenhauser
8. Du Quoin (USA), Sep 7-Rodger Ward (USA)-Watson-Offenhauser
9. Syracuse (USA), Sep 12-Eddie Sachs (USA)-Meskowski-Offenhauser
10. Indiana State Fairgrounds (USA), Sep 19-Rodger Ward (USA)-Watson-Offenhauser
11. Trenton (USA), Sep 27-Eddie Sachs (USA)-Meskowski-Offenhauser
12. Phoenix (USA), Oct 18-Tony Bettenhausen (USA)-Kuzma-Offenhauser
13. Sacramento (USA), Oct 25-Jim Hurtubise (USA)-Kuzma-Offenhauser

1960 (Champion: AJ Foyt)
1. Trenton (USA), Apr 10-Rodger Ward (USA)-Watson-Offenhauser
2. Indianapolis 500 (USA), May 30-Jim Rathmann (USA)-Watson-Offenhauser
3. Milwaukee (USA), Jun 5-Rodger Ward (USA)-Watson-Offenhauser
4. Langhorne (USA), Jun 19-Jim Hurtubise (USA)-Kuzma-Offenhauser
5. Springfield (USA), Aug 20-Jim Packard (USA)-Lesovsky-Offenhauser
6. Milwaukee (USA), Aug 28-Len Sutton (USA)-Watson-Offenhauser
7. Du Quoin (USA), Sep 5-AJ Foyt (USA)-Meskowski-Offenhauser
8. Syracuse (USA), Sep 10-Bobby Grim (USA)-Meskowski-Offenhauser
9. Indiana State Fairgrounds (USA), Sep 17-AJ Foyt (USA)-Meskowski-Offenhauser
10. Trenton (USA), Sep 25-Eddie Sachs (USA)-Kuzma-Offenhauser
11. Sacramento (USA), Oct 30-AJ Foyt (USA)-Meskowski-Offenhauser
12. Phoenix (USA), Nov 20-AJ Foyt (USA)-Meskowski-Offenhauser

1961 (Champion: AJ Foyt)
1. Trenton (USA), Apr 9-Eddie Sachs (USA)-Kuzma-Offenhauser
2. Indianapolis 500 (USA), May 30-AJ Foyt (USA)-Watson-Offenhauser
3. Milwaukee (USA), Jun 4-Rodger Ward (USA)-Watson-Offenhauser
4. Langhorne (USA), Jun 18-AJ Foyt (USA)-Meskowski-Offenhauser
5. Milwaukee (USA), Aug 20-Lloyd Ruby (USA)-Watson-Offenhauser
6. Springfield (USA), Aug 21-Jim Hurtubise (USA)-Kuzma-Offenhauser
7. Du Quoin (USA), Sep 4-AJ Foyt (USA)-Meskowski-Offenhauser
8. Syracuse (USA), Sep 9-Rodger Ward (USA)-Watson-Offenhauser
9. Indiana State Fairgrounds (USA), Sep 16-AJ Foyt (USA)-Meskowski-Offenhauser
10. Trenton (USA), Sep 24-Eddie Sachs (USA)-Kuzma-Offenhauser
11. Sacramento (USA), Oct 29-Rodger Ward (USA)-Watson-Offenhauser
12. Phoenix (USA), Nov 19-Parnelli Jones (USA)-Kuzma-Offenhauser

1962 (Champion: Rodger Ward)
1. Trenton (USA), Apr 8-AJ Foyt (USA)-Meskowski-Offenhauser
2. Indianapolis 500 (USA), May 30-Rodger Ward (USA)-Watson-Offenhauser
3. Milwaukee (USA), Jun 10-AJ Foyt (USA)-Watson/Trevis-Offenhauser
4. Langhorne (USA), Jul 1-AJ Foyt (USA)-Meskowski-Offenhauser
5. Trenton (USA), Jul 22-Rodger Ward (USA)-Watson-Offenhauser
6. Springfield (USA), Aug 19-Jim Hurtubise (USA)-Kuzma-Offenhauser
7. Milwaukee (USA), Aug 19-Rodger Ward (USA)-Watson-Offenhauser
8. Langhorne (USA), Aug 26-Don Branson (USA)-Watson-Offenhauser
9. Syracuse (USA), Sep 8-Rodger Ward (USA)-Watson-Offenhauser
10. Indiana State Fairgrounds (USA), Sep 15-Parnelli Jones (USA)-Kuzma-Offenhauser
11. Trenton (USA), Sep 23-Don Branson (USA)-Watson-Offenhauser
12. Sacramento (USA), Oct 28-AJ Foyt (USA)-Meskowski-Offenhauser
13. Phoenix (USA), Nov 18-Bobby Marshman (USA)-Meskowski-Offenhauser

1963 (Champion: AJ Foyt)
1. Trenton (USA), Apr 21-AJ Foyt (USA)-Meskowski-Offenhauser
2. Indianapolis 500 (USA), May 30-Parnelli Jones (USA)-Watson-Offenhauser
3. Milwaukee (USA), Jun 9-Rodger Ward (USA)-Watson-Offenhauser
4. Langhorne (USA), Jun 23-AJ Foyt (USA)-Meskowski-Offenhauser
5. Trenton (USA), Jul 28-AJ Foyt (USA)-Watson/Trevis-Offenhauser
6. Springfield (USA), Aug 17-Rodger Ward (USA)-Watson-Offenhauser
7. Milwaukee (USA), Aug 18-Jim Clark (GB)-Lotus-Ford
8. Du Quoin (USA), Sep 2-AJ Foyt (USA)-Meskowski-Offenhauser
9. Indiana State Fairgrounds (USA), Sep 14-Rodger Ward (USA)-Watson-Offenhauser
10. Trenton (USA), Sep 22-AJ Foyt (USA)-Watson/Trevis-Offenhauser
11. Sacramento (USA), Oct 27-Rodger Ward (USA)-Watson-Offenhauser
12. Phoenix (USA), Nov 17-Rodger Ward (USA)-Watson-Offenhauser

1964 (Champion: AJ Foyt)
1. Phoenix (USA), Mar 22-AJ Foyt (USA)-Watson-Offenhauser
2. Trenton (USA), Apr 19-AJ Foyt (USA)-Watson-Offenhauser
3. Indianapolis 500 (USA), May 30-AJ Foyt (USA)-Watson-Offenhauser
4. Milwaukee (USA), Jun 7-AJ Foyt (USA)-Watson-Offenhauser
5. Langhorne (USA), Jun 21-AJ Foyt (USA)-Meskowski-Offenhauser
6. Trenton (USA), Jul 19-AJ Foyt (USA)-Watson-Offenhauser
7. Springfield (USA), Aug 22-AJ Foyt (USA)-Meskowski-Offenhauser
8. Milwaukee (USA), Aug 23-Parnelli Jones (USA)-Lotus-Ford
9. Du Quoin (USA), Sep 7-AJ Foyt (USA)-Meskowski-Offenhauser
10. Indiana State Fairgrounds (USA), Sep 26-AJ Foyt (USA)-Meskowski-Offenhauser
11. Trenton (USA), Sep 27-Parnelli Jones (USA)-Lotus-Ford
12. Sacramento (USA), Oct 25-AJ Foyt (USA)-Meskowski-Offenhauser
13. Phoenix (USA), Nov 22-Lloyd Ruby (USA)-Halibrand-Offenhauser

1965 (Champion: Mario Andretti)
1. Phoenix (USA), Mar 28-Don Branson (USA)-Watson-Offenhauser
2. Trenton (USA), Apr 25-Jim McElreath (USA)-Brabham-Offenhauser
3. Indianapolis 500 (USA), May 31-Jim Clark (GB)-Lotus-Ford
4. Milwaukee (USA), Jun 6-Parnelli Jones (USA)-Kuzma/Lotus-Ford
5. Langhorne (USA), Jun 20-Jim McElreath (USA)-Brabham-Offenhauser
6. Pikes Peak (USA), Jul 4-Al Unser (USA)-Eisert/Lotus-Ford
7. Trenton (USA), Jul 18-AJ Foyt (USA)-Bignotti/Lotus-Ford
8. Indiana Raceway Park (USA), Jul 25-Mario Andretti (USA)-Hawk-Ford
9. Atlanta (USA), Aug 1-Johnny Rutherford (USA)-Watson-Ford
10. Langhorne (USA), Aug 8-Jim McElreath (USA)-Brabham-Offenhauser
11. Milwaukee (USA), Aug 14-Joe Leonard (USA)-Hallibrand-Ford
12. Springfield (USA), Aug 21-AJ Foyt (USA)-Meskowski-Offenhauser
13. Milwaukee (USA), Aug 22-Gordon Johncock (USA)-Gerhardt-Offenhauser
14. Du Quoin (USA), Sep 6-Don Branson (USA)-Watson-Offenhauser
15. Indiana State Fairgrounds (USA), Sep 18-AJ Foyt (USA)-Meskowski-Offenhauser
16. Trenton (USA), Sep 26-AJ Foyt (USA)-Bignotti/Lotus-Ford
17. Sacramento (USA), Oct 24-Don Branson (USA)-Watson-Offenhauser
18. Phoenix (USA), Nov 21-AJ Foyt (USA)-Bignotti/Lotus-Ford

1966 (Champion: Mario Andretti)
1. Phoenix (USA), Mar 20-Jim McElreath (USA)-Brabham-Ford
2. Trenton (USA), Apr 24-Rodger Ward (USA)-Lola/Drake-Offenhauser
3. Indianapolis 500 (USA), May 30-Graham Hill (GB)-Lola-Ford
4. Milwaukee (USA), Jun 5-Mario Andretti (USA)-Brawner/Brabham-Ford
5. Langhorne (USA), Jun 12-Mario Andretti (USA)-Brawner/Brabham-Ford
6. Atlanta (USA), Jun 26-Mario Andretti (USA)-Brawner/Brabham-Ford
7. Pikes Peak (USA), Jul 4-Bobby Unser (USA)-Unser-Chevrolet
8. Indiana Raceway Park (USA), Jul 24-Mario Andretti (USA)-Brawner/Brabham-Ford
9. Langhorne (USA), Aug 7-Roger McCluskey (USA)-Eagle-Ford
10. Springfield (USA), Aug 20-Don Branson (USA)-Watson-Offenhauser
11. Milwaukee (USA), Aug 27-Mario Andretti (USA)-Brawner/Brabham-Ford
12. Du Quoin (USA), Sep 5-Bud Tingelstad (USA)-Meskowski-Offenhauser
13. Indiana State Fairgrounds (USA), Sep 10-Mario Andretti (USA)-Kuzma-Offenhauser
14. Trenton (USA), Sep 25-Mario Andretti (USA)-Brawner/Brabham-Ford
15. Sacramento (USA), Oct 23-Dick Atkins (USA)-Watson-Offenhauser
16. Phoenix (USA), Nov 20-Mario Andretti (USA)-Brawner/Brabham-Ford

1967 (Champion: AJ Foyt)
1. Phoenix (USA), Apr 9-Lloyd Ruby (USA)-Mongoose-Drake-Offenhauser
2. Trenton (USA), Apr 23-Mario Andretti (USA)-Brawner/Hawk-Ford
3. Indianapolis 500 (USA), May 30-AJ Foyt (USA)-Coyote/Lotus-Ford
4. Milwaukee (USA), Jun 4-Gordon Johncock (USA)-Gerhardt-Offenhauser
5. Langhorne (USA), Jun 18-Lloyd Ruby (USA)-Lotus-Ford
6. Pikes Peak (USA), Jun 25-Wes Vandervoort (USA)-Chevrolet
7. Mosport (CDN), Race 1 (Jul 1)-Bobby Unser (USA)-Eagle-Ford
8. Mosport (CDN), Race 2 (Jul 1)-Bobby Unser (USA)-Eagle-Ford
9. Indiana Raceway Park (USA), Jul 23-Mario Andretti (USA)-Brawner/Hawk-Ford
10. Langhorne (USA), Jul 30-Mario Andretti (USA)-Brawner/Hawk-Ford
10. St Jovite (CDN), Race 1 (Aug 6)-Mario Andretti (USA)-Brawner/Hawk-Ford
11. St Jovite (CDN), Race 2 (Aug 6)-Mario Andretti (USA)-Brawner/Hawk-Ford
11. Springfield (USA), Aug 19-AJ Foyt (USA)-Meskowski-Offenhauser
12. Milwaukee (USA), Aug 20-Mario Andretti (USA)-Brawner/Hawk-Ford
13. Du Quoin (USA), Sep 4-AJ Foyt (USA)-Meskowski-Offenhauser
14. Indiana State Fairgrounds (USA), Sep 9-Mario Andretti (USA)-Brawner/Hawk-Ford
15. Trenton (USA), Sep 24-AJ Foyt (USA)-Coyote-Ford
16. Sacramento (USA), Oct 1-AJ Foyt (USA)-Meskowski-Offenhauser
17. Hanford (USA), Oct 22-Gordon Johncock (USA)-Gerhardt-Offenhauser
18. Phoenix (USA), Nov 19-Mario Andretti (USA)-Brawner/Hawk-Ford
19. Riverside (USA), Nov 26-Dan Gurney (USA)-Eagle-Ford/Weslake

1968 (Champion: Bobby Unser)
1. Hanford (USA), Mar 17-Gordon Johncock (USA)-Gerhardt-Drake/Offenhauser
2. Stardust, Las Vegas (USA), Mar 31-Bobby Unser (USA)-Eagle-Ford
3. Phoenix (USA), Apr 7-Bobby Unser (USA)-Eagle-Drake/Offenhauser
4. Trenton (USA), Apr 21-Bobby Unser (USA)-Eagle-Drake/Offenhauser
5. Indianapolis 500 (USA), May 30-Bobby Unser (USA)-Eagle-Drake/Offenhauser
6. Milwaukee (USA), Jun 9-Lloyd Ruby (USA)-Mongoose-Drake-Offenhauser
7. Mosport (CDN), Race 1 (Jul 1)-Dan Gurney (USA)-Eagle-Ford/Weslake
8. Mosport (CDN), Race 2 (Jul 1)-Dan Gurney (USA)-Eagle-Ford/Weslake
9. Langhorne (USA), Jun 23-Gordon Johncock (USA)-Gerhardt-Drake/Offenhauser
10. Pikes Peak (USA), Jun 30-Bobby Unser (USA)-Unser-Chevrolet
11. Castle Rock (USA), Jul 7-AJ Foyt (USA)-Coyote-Ford
12. Nazareth (USA), Jul 13-Al Unser (USA)-Ward-Offenhauser
13. Indianapolis Raceway Park (USA), Race 1 (Jul 21)-Al Unser (USA)-Lola-Ford
14. Indianapolis Raceway Park (USA), Race 2 (Jul 21)-Al Unser (USA)-Lola-Ford
15. Langhorne (USA), Race 1 (Jul 28)-Al Unser (USA)-Lola-Ford
16. Langhorne (USA), Race 2 (Jul 28)-Al Unser (USA)-Lola-Ford
17. St Jovite (CDN), Race 1 (Aug 4)-Mario Andretti (USA)-Brawner/Hawk-Ford
18. St Jovite (CDN), Race 2 (Aug 4)-Mario Andretti (USA)-Brawner/Hawk-Ford
19. Springfield (USA), Aug 17-Roger McCluskey (USA)-Meskowski-Offenhauser
20. Milwaukee (USA), Aug 18-Lloyd Ruby (USA)-Mongoose-Drake-Offenhauser
21. Du Quoin (USA), Sep 2-Mario Andretti (USA)-Kuzma-Offenhauser
22. Indiana State Fairgrounds (USA), Sep 7-AJ Foyt (USA)-Mesowski-Offenhauser
23. Trenton (USA), Sep 22-Mario Andretti (USA)-Brawner/Hawk-Offenhauser
24. Sacramento (USA), Sep 29-AJ Foyt (USA)-Meskowski-Offenhauser
25. Michigan (USA), Oct 13-Ronnie Bucknum (USA)-Eagle-Drake/Offenhauser
26. Hanford (USA), Nov 3-AJ Foyt (USA)-Coyote-Ford
27. Phoenix (USA), Nov 17-Gary Bettenhausen (USA)-Gerhardt-Drake/Offenhauser
28. Riverside (USA), Dec 1-Dan Gurney (USA)-Eagle-Ford/Weslake

1969 (Champion: Mario Andretti)
1. Phoenix (USA), Mar 30-George Follmer (USA)-Gilbert-Chevrolet
2. Hanford (USA), Apr 13-Mario Andretti (USA)-Brawner/Hawk-Ford
3. Indianapolis 500 (USA), May 30-Mario Andretti (USA)-Brawner/Hawk-Ford
4. Milwaukee (USA), Jun 8-Art Pollard (USA)-Gebhardt-Drake-Offenhauser*
5. Langhorne (USA), Jun 15-Bobby Unser (USA)-Eagle-Drake-Offenhauser
6. Pikes Peak (USA), Jun 29-Mario Andretti (USA)-King-Chevrolet
7. Castle Rock (USA), Jul 6-Gordon Johncock (USA)-Eagle-Ford
8. Nazareth (USA), Jul 12-Mario Andretti (USA)-Kuzma-Offenhauser
9. Trenton (USA), Jul 19-Mario Andretti (USA)-Brawner/Hawk-Ford
10. Indianapolis Raceway Park (USA), Race 1 (Jul 27)-Dan Gurney (USA)-Eagle-Ford
11. Indianapolis Raceway Park (USA), Race 2 (Jul 27)-Peter Revson (USA)-Brabham-Repco
12. Milwaukee (USA), Aug 17-Al Unser (USA)-Lola-Ford
13. Springfield (USA), Aug 18-Mario Andretti (USA)-Kuzma-Offenhauser
14. Dover Downs (USA), Aug 24-Art Pollard (USA)-Ger hardt-Plymouth
15. Du Quoin (USA), Sep 1-Al Unser (USA)-King-Ford
16. Indiana State Fairgrounds (USA), Sep 6-AJ Foyt (USA)-Meskowski-Ford
17. Brainerd (USA), Race 1 (Sep 14)-Gordon Johncock (USA)-Eagle-Ford
18. Brainerd (USA), Race 2 (Sep 14)-Dan Gurney (USA)-Eagle-Ford
19. Trenton (USA), Sep 21-Mario Andretti (USA)-Brawner/Hawk-Ford
20. Sacramento (USA), Sep 28-Al Unser (USA)-King-Ford
21. Seattle (USA), Race 1 (Oct 19)-Mario Andretti (USA)-Brawner/Hawk-Ford
22. Seattle (USA), Race 2 (Oct 19)-Al Unser (USA)-Lola-Ford
23. Phoenix (USA), Nov 15-Al Unser (USA)-Lola-Ford
24. Riverside (USA), Dec 7-Mario Andretti (USA)-Brawner/Hawk-Ford
*Greg Weld also drove

1970 (Champion: Al Unser)
1. Phoenix (USA), Mar 28-Al Unser (USA)-Colt-Ford
2. Sears Point (USA), Apr 4-Dan Gurney (USA)-Eagle-Ford
3. Trenton (USA), Apr 26-Lloyd Ruby (USA)-Mongoose-Offenhauser
4. Indianapolis 500 (USA), May 30-Al Unser (USA)-Colt-Ford
5. Milwaukee (USA), Jun 7-Joe Leonard (USA)-Colt-Ford
6. Langhorne (USA), Jun 16-Bobby Unser (USA)-Eagle-Offenhauser
7. Continental Divide, Jun 28-Mario Andretti (USA)-McNamara-Ford
8. Michigan (USA), Jul 4-Gary Bettenhausen (USA)-Gerhardt-Offenhauser
9. Indianapolis Raceway Park (USA), Jul 26-Al Unser (USA)-Colt-Ford
10. Springfield (USA), Aug 22-Al Unser (USA)-King-Ford
11. Milwaukee (USA), Aug 23-Al Unser (USA)-Colt-Ford
12. Ontario (USA), Sep 6-Jim McElreath (USA)-Coyote-Ford
13. Du Quoin (USA), Sep 7-Al Unser (USA)-King-Ford
14. Indiana State Fairgrounds (USA), Sep 12-Al Unser (USA)-King-Ford
15. Sedalia (USA), Sep 19-Al Unser (USA)-King-Ford
16. Trenton (USA), Oct 3-Al Unser (USA)-Colt-Ford
17. Sacramento (USA), Oct 4-Al Unser (USA)-King-Ford
18. Phoenix (USA), Nov 21-Swede Savage (USA)-Eagle-Ford

1971 (Champion: Joe Leonard)
1. Rafaela (RA), Race 1 (Feb 28)-Al Unser (USA)-Colt-Ford
2. Rafaela (RA), Race 2 (Feb 28)-Al Unser (USA)-Colt-Ford
3. Phoenix (USA), Mar 27-Al Unser (USA)-Colt-Ford
4. Trenton (USA), Apr 25-Mike Mosley (USA)-Eagle-Ford
5. Indianapolis 500 (USA), May 29-Al Unser (USA)-Colt-Ford
6. Milwaukee (USA), Jun 6-Al Unser (USA)-Colt-Ford
7. Pocono (USA), Jul 3-Mark Donohue (USA)-McLaren-Offenhauser
8. Michigan (USA), Jul 18-Mark Donohue (USA)-McLaren-Offenhauser
9. Milwaukee (USA), Aug 15-Bobby Unser (USA)-Eagle-Offenhauser
10. Ontario (USA), Sep 5-Joe Leonard (USA)-Colt-Ford
11. Trenton (USA), Oct 3-Bobby Unser (USA)-Eagle-Offenhauser
12. Phoenix (USA), Oct 23-AJ Foyt (USA)-Coyote-Ford

1972 (Champion: Joe Leonard)
1. Phoenix (USA), Mar 18-Bobby Unser (USA)-Eagle-Offenhauser
2. Trenton (USA), Apr 23-Gary Bettenhausen (USA)-McLaren-Offenhauser
3. Indianapolis 500 (USA), May 27-Mark Donohue (USA)-McLaren-Offenhauser
4. Milwaukee (USA), Jun 4-Bobby Unser (USA)-Eagle-Offenhauser
5. Michigan (USA), Jul 16-Joe Leonard (USA)-Parnelli-Offenhauser
6. Pocono (USA), Jul 29-Joe Leonard (USA)-Parnelli-Offenhauser
7. Milwaukee (USA), Aug 13-Joe Leonard (USA)-Parnelli-Offenhauser
8. Ontario (USA), Sep 3-Roger McCluskey (USA)-McLaren-Offenhauser
9. Trenton (USA), Sep 24-Bobby Unser (USA)-Eagle-Offenhauser
10. Phoenix (USA), Nov 4-Bobby Unser (USA)-Eagle-Offenhauser

1973 (Champion: Roger McCluskey)
1. Texas (USA), Apr 7-Al Unser (USA)-Parnelli-Offenhauser
2. Trenton (USA), Race 1 (Apr 15)-AJ Foyt (USA)-Coyote-Foyt-Ford
3. Trenton (USA), Race 2 (Apr 15)-Mario Andretti (USA)-Parnelli-Offenhauser
4. Indianapolis 500 (USA), May 28-Gordon Johncock (USA)-Eagle-Offenhauser
5. Milwaukee (USA), Jun 10-Bobby Unser (USA)-Eagle-Offenhauser
6. Pocono (USA), Jul 1-AJ Foyt (USA)-Coyote-Foyt-Ford
7. Michigan (USA), Jul 15-Roger McCluskey (USA)-McLaren-Offenhauser
8. Milwaukee (USA), Aug 12-Wally Dallenbach (USA)-Eagle-Offenhauser
9. Ontario (USA), Race 1 (Aug 26)-Wally Dallenbach (USA)-Eagle-Offenhauser
10. Ontario (CDN), Race 2 (Aug 26)-Johnny Rutherford (USA)-McLaren-Offenhauser
11. Ontario (CDN), Sep 2-Wally Dallenbach (USA)-Eagle-Offenhauser
12. Michigan (USA), Race 1 (Sep 16)-Bill Vukovich (USA)-Eagle-Offenhauser
13. Michigan (USA), Race 2 (Sep 16)-Johnny Rutherford (USA)-McLaren-Offenhauser
14. Trenton (USA), Sep 23-Gordon Johncock (USA)-Eagle-Offenhauser
15. Texas (USA), Oct 6-Gary Bettenhausen (USA)-McLaren-Offenhauser
16. Phoenix (USA), Nov 3-Gordon Johncock (USA)-Eagle-Offenhauser

1974 (Champion: Bobby Unser)
1. Ontario (USA), Race 1 (Mar 3)-AJ Foyt (USA)-Coyote-Foyt-Ford
2. Ontario (USA), Race 2 (Mar 3)-Johnny Rutherford (USA)-McLaren-Offenhauser
3. Ontario (USA), Mar 10-Bobby Unser (USA)-Eagle-Offenhauser
4. Phoenix (USA), Mar 17-Mike Mosley (USA)-Eagle-Offenhauser
5. Trenton (USA), Apr 7-Bobby Unser (USA)-Eagle-Offenhauser
6. Indianapolis 500 (USA), May 26-Johnny Rutherford (USA)-McLaren-Offenhauser
7. Milwaukee (USA), Jun 9-Johnny Rutherford (USA)-McLaren-Offenhauser
8. Pocono (USA), Jun 30-Johnny Rutherford (USA)-McLaren-Offenhauser
9. Michigan (USA), Jul 21-Bobby Unser (USA)-Eagle-Offenhauser
10. Milwaukee (USA), Aug 11-Gordon Johncock (USA)-Eagle-Offenhauser
11. Michigan (USA), Sep 15-Al Unser (USA)-Eagle-Offenhauser
12. Trenton (USA), Race 1 (Sep 22)-AJ Foyt (USA)-Coyote-Foyt-Ford
13. Trenton (USA), Race 2 (Sep 22)-Bobby Unser (USA)-Eagle-Offenhauser
14. Phoenix (USA), Nov 2-Gordon Johncock (USA)-Eagle-Offenhauser

1975 (Champion: AJ Foyt)
1. Ontario (USA), Race 1 (Mar 2)-AJ Foyt (USA)-Coyote-Foyt-Ford
2. Ontario (USA), Race 2 (Mar 2)-Wally Dallenbach (USA)-Eagle-Offenhauser
3. Ontario (USA), Mar 9-AJ Foyt (USA)-Coyote-Foyt-Ford
4. Phoenix (USA), Mar 16-Johnny Rutherford (USA)-McLaren-Offenhauser
5. Trenton (USA), Apr 6-AJ Foyt (USA)-Coyote-Foyt-Ford
6. Indianapolis 500 (USA), May 25-Bobby Unser (USA)-Eagle-Offenhauser
7. Milwaukee (USA), Jun 8-AJ Foyt (USA)-Coyote-Foyt-Ford
8. Pocono (USA), Jun 29-AJ Foyt (USA)-Coyote-Foyt-Ford
9. Michigan (USA), Jul 20-AJ Foyt (USA)-Coyote-Foyt-Ford
10. Milwaukee (USA), Aug 17-Mike Mosley (USA)-Eagle-Offenhauser
11. Michigan (USA), Sep 13-Tom Sneva (USA)-McLaren-Offenhauser
12. Trenton (USA), Sep 21-Gordon Johncock (USA)-Wildcat-Offenhauser
13. Phoenix (USA), Nov 9-AJ Foyt (USA)-Coyote-Foyt-Ford

1976 (Champion: Gordon Johncock)
1. Phoenix (USA), Mar 14-Bobby Unser (USA)-Eagle-Offenhauser
2. Trenton (USA), May 2-Johnny Rutherford (USA)-McLaren-Offenhauser
3. Indianapolis 500 (USA), May 30-Johnny Rutherford (USA)-McLaren-Offenhauser
4. Milwaukee (USA), Jun 13-Mike Mosley (USA)-Eagle-Offenhauser
5. Pocono (USA), Jun 27-Al Unser (USA)-Parnelli-Cosworth
6. Michigan (USA), Jul 18-Gordon Johncock (USA)-Wildcat-Offenhauser
7. Texas (USA), Aug 1-AJ Foyt (USA)-Coyote-Ford
8. Trenton (USA), Aug 15-Gordon Johncock (USA)-Wildcat-Offenhauser
9. Milwaukee (USA), Aug 22-Al Unser (USA)-Parnelli-Cosworth
10. Ontario (USA), Sep 5-Bobby Unser (USA)-Eagle-Offenhauser
11. Michigan (USA), Sep 18-AJ Foyt (USA)-Coyote-Ford
12. Texas (USA), Oct 31-Johnny Rutherford (USA)-McLaren-Offenhauser
13. Phoenix (USA), Nov 7-Al Unser (USA)-Parnelli-Cosworth

1977 (Champion: Tom Sneva)
1. Ontario (USA), Mar 6-AJ Foyt (USA)-Coyote-Foyt-Ford
2. Phoenix (USA), Mar 27-Johnny Rutherford (USA)-McLaren-Cosworth
3. Texas (USA), Apr 2-Tom Sneva (USA)-McLaren-Cosworth
4. Trenton (USA), Apr 30-Wally Dallenbach (USA)-Wildcat-Offenhauser
5. Indianapolis 500 (USA), May 29-AJ Foyt (USA)-Coyote-Foyt-Ford
6. Milwaukee (USA), Jun 12-Johnny Rutherford (USA)-McLaren-Cosworth
7. Pocono (USA), Jun 26-Tom Sneva (USA)-McLaren-Cosworth
8. Mosport (CDN), Jul 3-AJ Foyt (USA)-Coyote-Foyt-Ford
9. Michigan (USA), Jul 17-Danny Ongais (USA)-Parnelli-Cosworth
10. Texas (USA), Jul 31-Johnny Rutherford (USA)-McLaren-Cosworth
11. Milwaukee (USA), Aug 21-Johnny Rutherford (USA)-McLaren-Cosworth
12. Ontario (USA), Sep 4-Al Unser (USA)-Parnelli-Cosworth
13. Michigan (USA), Sep 17-Gordon Johncock (USA)-Wildcat-Offenhauser
14. Phoenix (USA), Oct 29-Gordon Johncock (USA)-Wildcat-Offenhauser

1978 (Champion: Tom Sneva)
1. Phoenix (USA), Mar 18-Gordon Johncock (USA)-Wildcat-Offenhauser
2. Ontario (USA), Mar 26-Danny Ongais (USA)-Parnelli-Cosworth
3. Texas (USA), Apr 15-Danny Ongais (USA)-Parnelli-Cosworth
4. Trenton (USA), Apr 23-Gordon Johncock (USA)-Wildcat-Offenhauser
5. Indianapolis 500 (USA), May 28-Al Unser (USA)-Lola-Cosworth
6. Mosport (CDN), Jun 11-Danny Ongais (USA)-Parnelli-Cosworth
7. Milwaukee (USA), Jun 18-Rick Mears (USA)-Penske-Cosworth
8. Pocono (USA), Jun 25-Al Unser (USA)-Lola-Cosworth
9. Michigan (USA), Jul 16-Johnny Rutherford (USA)-McLaren-Cosworth
10. Atlanta (USA), Jul 23-Rick Mears (USA)-Penske-Cosworth
11. Texas (USA), Aug 6-AJ Foyt (USA)-Coyote-Foyt-Ford
12. Milwaukee (USA), Aug 20-Danny Ongais (USA)-Parnelli-Cosworth
13. Ontario (USA), Sep 3-Al Unser (USA)-Lola-Cosworth
14. Michigan (USA), Sep 16-Danny Ongais (USA)-Parnelli-Cosworth
15. Trenton (USA), Sep 23-Mario Andretti (USA)-Penske-Cosworth
16. Silverstone (GB), Oct 1-AJ Foyt (USA)-Coyote-Foyt-Ford
17. Brands Hatch (GB), Oct 7-Rick Mears (USA)-Penske-Cosworth
18. Phoenix (USA), Oct 28-Johnny Rutherford (USA)-McLaren-Cosworth

1979 (Champion: AJ Foyt)
1. Ontario (USA), Mar 25-AJ Foyt (USA)-Parnelli-Cosworth
2. Texas (USA), Apr 8-AJ Foyt (USA)-Coyote-Foyt-Ford
3. Indianapolis 500 (USA), May 27-Rick Mears (USA)-Penske-Cosworth
4. Milwaukee (USA), Jun 10-AJ Foyt (USA)-Parnelli-Cosworth
5. Pocono (USA), Jun 24-AJ Foyt (USA)-Parnelli-Cosworth
6. Texas (USA), Jul 29-AJ Foyt (USA)-Parnelli-Cosworth
7. Milwaukee (USA), Aug 12-Roger McCluskey (USA)-Lola-Cosworth

Total races: 355

Winning drivers

66 wins-AJ Foyt
35 wins-Al Unser
33 wins-Mario Andretti
24 wins-Bobby Unser, Rodger Ward
19 wins-Gordon Johncock
17 wins-Johnny Rutherford
8 wins-Eddie Sachs
7 wins-Jimmy Bryan, Dan Gurney, Lloyd Ruby
6 wins-Don Branson, Parnelli Jones, Joe Leonard, Danny Ongais, Johnny Thomson
5 wins-Wally Dallenbach, Jud Larson, Roger McClusky, Jim McElreath
4 wins-Gary Bettenhausen, Jim Hurtubise, Rick Mears, Mike Mosley
3 wins-George Amick, Tony Bettenhausen, Mark Donohue, Jim Rathmann, Tom Sneva, Len Sutton
2 wins-Jim Clark, Pat Flaherty, Pat O’Connor
1 win-Dick Atkins, Art Bisch, Ronnie Bucknum, George Follmer, Elmer George, Bobby Grim, Sam Hanks, Graham Hill, Van Johnson, Bobby Marshman, Jim Packard, Art Pollard, Peter Revson, Swede Savage, Bud Tingelstad, Wes Vandervoort, Bill Vukovich

Total winning drivers: 50

Winning nationalities

Great Britain-2 drivers (Clark, Hill)
United States-48 drivers (Amick, Andretti, Atkins, G Bettenhausen, T Bettenhausen, Bisch, Branson, Bryan, Bucknum, Dallenbach, Donohue, Flaherty, Follmer, Foyt, George, Grim, Gurney, Hanks, Hurtubise, Johncock, Johnson, Jones, Larson, Leonard, McClusky, McElreath, Mears, Mosley, Marshman, O’Connor, Ongais, Packard, Pollard, Rathmann, Revson, Ruby, Rutherford, Sachs, Savage, Sneva, Sutton, Thomson, Tingelstad, A Unser, B Unser, Vandervoort, Vukovich, Ward)

Total winning nationalities: 2

Winning manufacturers

49 wins-Eagle
47 wins-Watson
34 wins-Kuzma
32 wins-Meskowski
26 wins-McLaren
24 wins-Coyote
19 wins-Parnelli
18 wins-Hawk
13 wins-Lola
12 wins-Brabham, Colt
11 wins-Lotus
10 wins-Lesovsky
9 wins-Gerhardt
8 wins-King, Wildcat
5 wins-Penske
4 wins-Mongoose
3 wins-Epperly
2 wins-Hallibrand, Unser
1 win-Chevrolet, Gilbert, Hillegas, Kurtis, McNamara, Templeton, Ward

Total wins: 355 by 28 manufacturers

Winning engines

211 wins-Offenhauser
106 wins-Ford
31 wins-Cosworth
5 wins-Chevrolet
1 win-Repco, Plymouth

Total wins: 355 by 6 engine manufacturers