| | Heat | Dash | B Feature | A Feature |
|---|
|
|---|
| 3/7/1998 | Kings Speedway - Hanford, CA | Results | | Bobby McMahan (410 Sprints - Winged) | - | - | - | 10th |
|
| 3/14/1998 | Silver Dollar Speedway - Chico, CA | Results | | Bobby McMahan (410 Sprints - Winged) | - | - | - | 2nd |
|
| 4/11/1998 | Silver Dollar Speedway - Chico, CA | Results | | Bobby McMahan (410 Sprints - Winged) | - | - | - | 16th |
|
| 4/19/1998 | Marysville Raceway - Marysville, CA 360 Sprints - Winged: California Sprint Car Civil War Series | Results | | Bobby McMahan (360 Sprints - Winged) | - | - | - | 4th |
|
| 4/24/1998 | Silver Dollar Speedway - Chico, CA | Results | | Bobby McMahan (410 Sprints - Winged) | - | - | - | 4th |
|
| 4/25/1998 | San Jose Fairgrounds - San Jose, CA | Results | | Bobby McMahan (410 Sprints - Winged) | - | - | - | 8th |
|
| 5/8/1998 | Kings Speedway - Hanford, CA | Results | | Bobby McMahan (410 Sprints - Winged) | - | - | - | 4th |
|
| 5/23/1998 | Calistoga Speedway - Calistoga, CA 410 Sprints - Winged: NARC-Northern Auto Racing Club | Results | | Bobby McMahan (410 Sprints - Winged) | - | - | - | 5th |
|
| 5/24/1998 | Calistoga Speedway - Calistoga, CA 410 Sprints - Winged: NARC-Northern Auto Racing Club | Results | | Bobby McMahan (410 Sprints - Winged) | - | - | - | 11th |
|
| 6/3/1998 | Placerville Speedway - Placerville, CA | Results | | Bobby McMahan (360 Sprints - Winged) | - | - | - | 1st |
|
| 6/13/1998 | San Jose Fairgrounds - San Jose, CA | Results | | Bobby McMahan (410 Sprints - Winged) | - | - | - | 9th |
|
| 6/20/1998 | San Jose Fairgrounds - San Jose, CA | Results | | Bobby McMahan (360 Sprints - Winged) | - | - | - | 2nd |
|
| 6/27/1998 | Kings Speedway - Hanford, CA | Results | | Bobby McMahan (360 Sprints - Winged) | - | - | - | 2nd |
|
| 6/29/1998 | Placerville Speedway - Placerville, CA 410 Sprints - Winged: NARC-Northern Auto Racing Club | Results | | Bobby McMahan (410 Sprints - Winged) | - | - | - | 8th |
|
| 6/30/1998 | Marysville Raceway - Marysville, CA 410 Sprints - Winged: NARC-Northern Auto Racing Club | Results | | Bobby McMahan (410 Sprints - Winged) | 3rd | - | - | 8th |
|
| 7/1/1998 | Silver Dollar Speedway - Chico, CA 410 Sprints - Winged: NARC-Northern Auto Racing Club | Results | | Bobby McMahan (410 Sprints - Winged) | - | - | - | 3rd |
|
| 7/11/1998 | Placerville Speedway - Placerville, CA | Results | | Bobby McMahan (360 Sprints - Winged) | - | - | - | 1st |
|
| 7/17/1998 | Kings Speedway - Hanford, CA 410 Sprints - Winged: Golden State King of the West Sprints | Results | | Bobby McMahan (410 Sprints - Winged) | - | - | - | 19th |
|
| 7/18/1998 | Kings Speedway - Hanford, CA 410 Sprints - Winged: Golden State King of the West Sprints 360 Sprints - Winged | Results | | Bobby McMahan (410 Sprints - Winged) | - | - | - | 6th |
|
| 7/24/1998 | Silver Dollar Speedway - Chico, CA 410 Sprints - Winged: NARC-Northern Auto Racing Club | Results | | Bobby McMahan (410 Sprints - Winged) | - | - | - | 2nd |
|
| 7/25/1998 | Silver Dollar Speedway - Chico, CA 410 Sprints - Winged: NARC-Northern Auto Racing Club | Results | | Bobby McMahan (410 Sprints - Winged) | - | - | - | 2nd |
|
| 8/8/1998 | San Jose Fairgrounds - San Jose, CA | Results | | Bobby McMahan (410 Sprints - Winged) | - | - | - | 7th |
|
| 8/21/1998 | Kings Speedway - Hanford, CA | Results | | Bobby McMahan (410 Sprints - Winged) | - | - | - | 6th |
|
| 8/22/1998 | Kings Speedway - Hanford, CA 410 Sprints - Winged: Golden State King of the West Sprints 360 Sprints - Winged | Results | | Bobby McMahan (360 Sprints - Winged) | - | - | - | 5th | | Bobby McMahan (410 Sprints - Winged) | - | - | - | 6th |
|
| 9/17/1998 | Silver Dollar Speedway - Chico, CA 410 Sprints - Winged: World of Outlaws | Results | | Bobby McMahan (410 Sprints - Winged) | - | - | - | 6th |
|
| 9/19/1998 | Silver Dollar Speedway - Chico, CA 410 Sprints - Winged: World of Outlaws | Results | | Bobby McMahan (410 Sprints - Winged) | - | - | - | 11th |
|
| 10/3/1998 | San Jose Fairgrounds - San Jose, CA | Results | | Bobby McMahan (410 Sprints - Winged) | - | - | - | 16th |
|
| 10/9/1998 | Placerville Speedway - Placerville, CA | Results | | Bobby McMahan (410 Sprints - Winged) | - | - | - | 20th |
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| 10/10/1998 | Cal-Expo State Fairgrounds - Sacramento, CA Silver Crown: USAC Silver Crown 410 Sprints - Winged | Results | | Bobby McMahan (410 Sprints - Winged) | - | - | - | 5th |
|
| 10/16/1998 | San Jose Fairgrounds - San Jose, CA | Results | | Bobby McMahan (360 Sprints - Winged) | - | - | - | 4th |
|
| 10/17/1998 | San Jose Fairgrounds - San Jose, CA | Results | | Bobby McMahan (360 Sprints - Winged) | - | - | - | 23rd |
|
| 10/22/1998 | Silver Dollar Speedway - Chico, CA | Results | | Bobby McMahan (360 Sprints - Winged) | - | - | - | 1st |
|
| 11/13/1998 | Kings Speedway - Hanford, CA | Results | | Bobby McMahan (410 Sprints - Winged) | - | - | - | 7th |
|
| 11/14/1998 | Kings Speedway - Hanford, CA | Results | | Bobby McMahan (410 Sprints - Winged) | - | - | - | 18th |
|