The 2013 Trans-Am Series was the 45th running of the Sports Car Club of America's Trans-Am Series.
The GGT class of the previous year was replaced by the TA3 class. The TA3 class was later broken into two groups TA3-International, based on SCCA GT2 rules, and TA3-American Muscle, based on NASA American Iron Racing class rules, with year and model restrictions.[1]
Source:[2]
On December 21, 2012, Trans Am announced that the Ford Mustang would be added to the TA2 class, first introduced in 2010.[2]
| Pos | Driver | Car | Starts | Points | |
|---|---|---|---|---|---|
| 1 |  Doug Peterson | Chevrolet Corvette | 10 | 188 | |
| 2 | Simon Gregg | Chevrolet Corvette | 10 | 138 | |
| 3 | Cliff Ebben | Ford Mustang | 10 | 135 | |
| 4 | Amy Ruman | Chevrolet Corvette | 10 | 87 | |
| 5 | Tony Ave | Chevrolet Corvette | 5 | 79 | |
| 6 | David Pintaric | Chevrolet Corvette | 9 | 67 | |
| 7 | Paul Fix | Chevrolet Corvette | 4 | 58 | |
| 8 |  Allan Lewis | Chevrolet Corvette | 5 | 42 | |
| 9 | John Baucom | Ford Mustang | 6 | 41 | |
| 10 | Denny Lamers | Ford Mustang | 5 | 38 | |
| 11 | Jim McAleese | Chevrolet Corvette | 3 | 32 | |
| 12 | Kenny Bupp | Chevrolet Corvette | 4 | 32 | |
| 13 | Rick Dittman | Chevrolet Corvette | 3 | 25 | |
| 14 | Charles Wicht | Chevrolet Corvette | 2 | 24 | |
| 15 | Jordan Bupp | Chevrolet Corvette | 3 | 22 | |
| 16 | Kyle Kelley | Chevrolet Corvette | 2 | 18 | |
| 17 | Andrew Romocki | Chevrolet Corvette | 2 | 17 | |
| 18 | Mike Skeen | Jaguar XKR | 1 | 16 | |
| 19 | Bob Monette | Jaguar XKR | 2 | 15 | |
| 20 | Tomy Drissi | Chevrolet Corvette | 1 | 14 | |
| 21 | Kerry Hitt | Chevrolet Corvette | 3 | 12 | |
| 22 | Jed Copham | Chevrolet Corvette | 1 | 11 | |
| 23 | David Fershtand | Chevrolet Corvette | 1 | 11 | |
| 24 | Jim Peruto | Chevrolet Corvette | 2 | 10 | |
| 25 | Ted Sullivan | Chevrolet Camaro | 1 | 9 | |
| 26 | Blaise Csida | Chevrolet Corvette | 1 | 9 | |
| 27 | Richard Grant | Chevrolet Corvette | 1 | 8 | |
| 28 | Tim Rubright | Ford Mustang | 1 | 2 | |
| 29 | Jon Leavy | Chevrolet Camaro | 1 | 1 |
| Pos | Driver | Car | Starts | Points | |
|---|---|---|---|---|---|
| 1 | David Seuss | Porsche 996 GT3 | 7 | 156 | |
| 2 | Tim Gray | Porsche 996 GT3 | 6 | 107 | |
| 3 | Mickey Mills | BMW M3 | 4 | 57 |
| Pos | Driver | Car | Starts | Points | |
|---|---|---|---|---|---|
| 1 | Chuck Cassaro | Ford Mustang | 9 | 127 | |
| 2 | Rob Bodle | Ford Mustang | 8 | 101 | |
| 3 | Steve Kent Jr. | Ford Mustang | 5 | 99 | |
| 4 | Rich Jones | Ford Mustang | 4 | 61 | |
| 5 | Todd Napieralski | Chevrolet Camaro | 3 | 49 | |
| 6 | Robert Korzen | Ford Mustang | 3 | 36 | |
| 7 | Dane Moxlow | Ford Mustang | 1 | 19 | |
| 8 | Ernie Francis Jr. | Chevrolet Camaro | 1 | 19 | |
| 9 | Richard Golinello | Ford Mustang | 1 | 5 |
Geoff Fane