PORSCHE RACING HISTORY1982 - Riverside 6 Hours
25 April 1982 - Riverside International Raceway, USA
Al Holbert & Harald Grohs 2nd in a Porsche 935L, 2 laps behind the winning Lola T600 driven by Ted Field and Bill Whittington
Overall - 2nd, 3rd : GTP - 2nd, 3rd : GTO - 1st
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 3 | Porsche 935 L | 935 L | GTP | Al Holbert (USA)/Harald Grohs (D) | Andial/Meister Racing (USA) | 2nd | 2nd | 46th | 190 laps |
| 8 | Porsche 935 JLP-2 | 009 00043 | GTP | M. L. Speer (USA)/Terry Wolters (USA) | JLP Racing (USA) | 3rd | 3rd | 12th | 183 laps |
| 5 | Porsche 935 K3/80 | 000 00013 | GTP | Bob Akin (USA)/Craig Siebert (USA)/Derek Bell (GB) | Bob Akin Motor Racing (USA) | 4th | 4th | 9th | 183 laps |
| 9 | Porsche 935 K3 | 009 00030 | GTP | Ray Ratcliff (USA)/Grady Clay (USA) | Garretson Development (USA) | 5th | 5th | 14th | 182 laps |
| 53 | Porsche 911 | GTU | Steve Michaelson (USA)/Tom Alan Marx (USA)/Dennis Lanfre (USA) | RSR Associates | 9th | 3rd | 36th | 172 laps | |
| 05 | Porsche 911 Carrera RSR | 911 360 0610 | GTO | Tico Almeida (USA)/Ernesto Soto (YV) | T & R Racing (USA) | 10th | 1st | 31st | 172 laps |
| 45 | Porsche 914/6 | 914 043 0593 | GTU | Bobby Hefner (USA)/Bill Cooper (USA)/Jim Luckman (USA) | Garretson Development | 16th | 9th | 34th | 166 laps |
| 58 | Porsche 914/6 | GTU | Adrian Gang (USA)/Jim Middlebrook (USA) | Edelweiss Porschaus | 21st | 12th | 50th | 155 laps | |
| 24 | Porsche 911 | GTU | Zvonimir Jovanovic (USA)/Carl Wong (USA) | Robertson Place Motors | 23rd | 13th | 43rd | 151 laps | |
| 35 | Porsche 911 Carrera RSR | GTO | Ken Madren (USA)/Dennis Wilson (USA) | W/S Enterprises (USA) | 26th | 5th | 26th | 147 laps | |
| 39 | Porsche 911 | GTU | Greg LaCava (USA)/Claudia LaCava (USA)/Bobbee Nylander (USA) | Greg LaCava (USA) | 30th | 16th | 47th | 124 laps | |
| 22 | Porsche 914/4 | GTU | Wayne Baker (USA)/Jeff Scott (USA) | Personalized Autohaus (USA) | 32nd | 18th | 24th | 123 laps - DNF | |
| 2 | Porsche 935 K4 | K4-01 | GTP | John Fitzpatrick (GB)/David Hobbs (GB) | John Fitzpatrick Racing (GB) | 34th | 9th | 4th | 118 laps - DNF |
| 79 | Porsche 924 Carrera GTR | WP0ZZZ93ZBS720006 | GTO | Tom Winters (USA)/Bob Bergstrom (USA) | Promotion/White Hall Capital (USA) | 35th | 8th | 45th | 105 laps - DNF |
| 12 | Porsche 935 K3/80 | 000 00011 | GTP | Jim Busby (USA)/Vern Schuppan (AUS) | John Fitzpatrick Racing (GB) | 37th | 10th | 8th | 87 laps - DNF |
| 18 | Porsche 935 JLP-3 | JLP-3 | GTP | John Paul, Jr. (USA)/John Paul Sr. (USA) | JLP Racing/Miller Beer (USA) | 38th | 11th | 3rd | 79 laps - DNF |
| 84 | Porsche 934 | 930 670 0171 | GTO | " Jamsal" (ES)/Eduardo Galdamez (ES) | Scorpio Racing (ES) | 41st | 12th | 21st | 72 laps - DNF |
| 49 | Porsche 911 Carrera RSR | 12803002 | GTO | Bob Copeman (USA) | R. C. Copeman (USA) | 43rd | 13th | 49th | 28 laps - DNF |
| 00 | Porsche 935 K3/80 | 000 00027 | GTP | Bill Whittington (USA) | Interscope Racing (USA) | 45th | 13th | 7th | 18 laps - DNF |
| 56 | Porsche 911 Carrera | 911 210 0224 | GTO | Rick Borlase (USA) | Rick Borlase | 48th | 16th | 16th | 9 laps - DNF |
| 43 | Porsche 911 Carrera | GTO | Bob Young (USA) | Bob Gregg Racing | 50th | 18th | 37th | 1 lap |
IMSA - International Motor Sport Association
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