PORSCHE RACING HISTORY1970 - Zeltweg 1000 km
11 October 1970 - Österreichring, Zeltweg, Austria
Jo Siffert & Brian Redman win in a Porsche 917
Overall - 1st, 3rd : S5.0 - 1st, 2nd : P3.0 - 2nd, 3rd : S2.0 - 2nd, 3rd : GT2.0 - 1st, 2nd : GT2.5 - 1st, 2nd, 3rd
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 23 | Porsche 917 K | 917-031 | S5.0 | Jo Siffert (CH)/Brian Redman (GB) | J. W. Automotive (GB) | 1st | 1st | 5th | 170 laps |
| 6 | Porsche 908/02 | 908/02-005 | P3.0 | Gérard Larrousse (F)/Rudi Lins (A) | Martini Racing Team (D) | 3rd | 2nd | 9th | 167 laps |
| 21 | Porsche 917 K | 917-023 | S5.0 | Vic Elford (GB)/Richard Attwood (GB) | Porsche KG Salzburg (A) | 4th | 2nd | 4th | 162 laps |
| 5 | Porsche 908/02 | 908/02-023 | P3.0 | Reinhold Jöst (D)/Gerold Pankl (A) | Martini Racing Team (D) | 5th | 3rd | 11th | 162 laps |
| 12 | Porsche 908/02 | 908/02-008 | P3.0 | Niki Lauda (A)/Peter Peter (A) | Bosch Racing Team Wien | 6th | 4th | 12th | 161 laps |
| 24 | Porsche 910 | 910-001 | S2.0 | Lambert Hofer (A)/Werner Riedl (A) | Bosch Racing Team | 10th | 2nd | 16th | 146 laps |
| 51 | Porsche 914/6 | 914 043 0163 | GT2.0 | Günther Steckkönig (D)/Ferfried von Hohenzollern (D) | Strähle KG | 12th | 1st | 23rd | 139 laps |
| 32 | Porsche 906 | S2.0 | Kurt Rieder (A)/Otto Stuppacher (A)/Siegfried Pust (A) | Bosch Racing Team (A) | 13th | 3rd | 18th | 139 laps | |
| 49 | Porsche 914/6 | 914 043 0181 | GT2.0 | Ernst Seiler (CH)/Peter Ettmüller (CH) | Hart Ski Racing Team (CH) | 14th | 2nd | 25th | 137 laps |
| 53 | Porsche 911 | GT2.5 | Mario Ilotte (I)/Mario Ruspa (I) | Jolly Club (I) | 15th | 1st | 28th | 137 laps | |
| 43 | Porsche 911 S | 119 300 003 | GT2.5 | Paul-Ernst Strähle (D)/Dieter Schmid (D) | Paul-Ernst Strähle (D) | 16th | 2nd | 22nd | 136 laps |
| 41 | Porsche 911 | GT2.5 | Sylvain Garant (F)/Jean-Marie Masoneri (F) | Wicky Racing Team | 18th | 3rd | 31st | 133 laps | |
| 46 | Porsche 911 S | 911 030 1010 | GT2.5 | Erwin Kremer (D)/Günther Huber (D) | Auto Kremer (D) | 19th | 4th | 21st | 124 laps |
| 20 | Porsche 917 K | 917-020 | S5.0 | Kurt Ahrens Jr. (D)/Helmut Marko (A) | Porsche KG Salzburg (A) | DNF | 3rd | Out of Fuel | |
| 42 | Porsche 911 S | 911 030 1016 | GT2.5 | Claude Haldi (CH)/Bernard Cheneviére (CH) | Porsche Club Romand (CH) | DNF | 24th | ||
| 55 | Porsche 911 | GT2.5 | Bengt Ekberg (S)/Roland Larsson (S) | Kurt Simonsen | DNF | 26th | |||
| 47 | Porsche 911 T/R | 118 25 414 | GT2.5 | Ennio Bonomelli (I)/Fiorenzo Genta (I) | Ennio Bonomelli (I) | DNF | 27th | ||
| 50 | Porsche 911 | GT2.5 | Peter Kaiser (D)/Heinz Blind (D) | Stuttgart Sports Car Club | DNF | 29th | |||
| 44 | Porsche 911 | GT2.5 | Clemens Schickentanz (D)/Werner Zanders (D) | Peter Kersten (D) | DNF | 30th | |||
| 22 | Porsche 917 K | 917-016 | S5.0 | Pedro Rodríguez (MEX)/Leo Kinnunen (FI) | J. W. Automotive (GB) | DNF | 1st | 4 laps - Valves |
International Championship for Makes
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