| 1981 · 20th Annual 24 Hour Pepsi Challenge Camel GT race, Daytona Internati onal Speedway | 65 | 28 | 6. GTO | NTS Racing | Sam Posey · Fred Stiff | Datsun 280ZX | — | 29 | WSPR historical record |
| 1981 · Molson 1000 Camel GT, Mosport | 31 | 39 | 0. GTO | Z & W Enterprises | Fred Stiff · Pierre Honegger · Sam Posey | Mazda RX-7 | — | 34 | WSPR historical record |
| 1981 · Molson 1000 Camel GT, Mosport | entry_only | 28 | GTO | NTS Racing | Fred Stiff · Sam Posey | Datsun 280ZX Turbo | — | | WSPR historical record |
| 1981 · Pabst 500 Camel GT, Road America, Elkhart Lake | entry_only | 28 | GTO | NTS Racing | Fred Stiff · Sam Posey | Datsun 280ZX | — | | WSPR historical record |
| 1981 · Pabst 500 Camel GT, Road America, Elkhart Lake | 2 | 7 | 2. GTX | Kent-Cooke/Wood Racing | Brian Redman · Sam Posey | Lola T600 Chevrolet | — | 125 | WSPR historical record |
| 1981 · 29th Annual Coca-Cola 12 Hours of Sebring Camel GT race, Sebring Airp ort | 19 | 28 | 8. GTO | NTS Racing | Sam Posey · Fred Stiff | Datsun 280ZX | — | 187 | WSPR historical record |
| 1981 · Los Angeles Times/Toyota Grand Prix Camel GT, Riverside Int'l Raceway | 13 | 28 | 4. GTO | NTS Racing | Sam Posey · Fred Stiff | Datsun 280ZX | — | 172 | WSPR historical record |
| 1980 · Molson Canadian 1000 IMSA GT Series, Mosport Park | 29 | 95 | 7. GTU | NTS Racing | Fred Stiff · Sam Posey | Datsun 240Z | — | 58 | WSPR historical record |
| 1978 · 1978 24 Hours of Le Mans | 10 | 10 | Gr.6 S 3.0 | Grand Touring Cars Inc | Vern Schuppan · Jacques Laffite · Sam PoseyVern Schuppan Jacques Laffite Sam Posey | Mirage M9 | Renault 2.0L V6 turbo | 293 | Wikipedia contributors · CC BY-SA 4.0 |
| 1978 · 1978 24 Hours of Le Mans | DNF | 11 | Gr.6 S 3.0 | Grand Touring Cars | Sam Posey · Michel LeclèreSam Posey Michel Leclère | Mirage M9 | Renault 2.0L V6 turbo | 33 | Wikipedia contributors · CC BY-SA 4.0 |
| 1977 · 1977 24 Hours of Le Mans | DNF | 11 | Gr.6 S 3.0 | Grand Touring Cars Inc | Sam Posey · Michel LeclèreSam Posey Michel Leclère | Mirage M8 | Renault 1997cc V6 turbo | 58 | Wikipedia contributors · CC BY-SA 4.0 |
| 1977 · 24 Hours of Daytona, Daytona International Speedway | 40 | 2 | 8. GTO | BMW North America | David Hobbs · Ronnie Peterson · Sam Posey | BMW 320i Turbo | — | 177 | WSPR historical record |
| 1976 · 1976 24 Hours of Le Mans | 10 | 42 | Gp.5 SP | BMW Motorsport GmbH Alpina-Faltz | Harald Grohs · Sam PoseyHarald Grohs Sam Posey Baron Hughes de Fierlandt | BMW 3.0 CSL | BMW 3.5L S6 | 299 | Wikipedia contributors · CC BY-SA 4.0 |
| 1976 · March Trophy, Mugello 6 Hours | 10 | 3 | 7. Gr.5 | BMW Faltz Alpina Essen | Sam Posey · Harald Grohs · DNS - Hughes de Fierlant | BMW 3.5 CSL | — | 147 | WSPR historical record |
| 1976 · Trofeo Ignazio Giunti, Vallelunga 6 Hours | 2 | 5 | 2. Gr.5 | Faltz Alpina | Harald Grohs · Sam Posey · Hughes de Fierlant | BMW 3.5 CSL | — | 254 | WSPR historical record |
| 1975 · 1975 24 Hours of Le Mans | DNF | 93 | TS | H. Poulain (private entrant) | Sam Posey · Jean GuichetHervé Poulain Sam Posey Jean Guichet | BMW 3.0 CSL | BMW 3.5L S6 | 73 | Wikipedia contributors · CC BY-SA 4.0 |
| 1975 · Daytona 24 Hours | 33 | 24 | 3. GTO | BMW of America | Sam Posey · Hans-Joachim Stuck | BMW 3.0 CSL | — | 274 | WSPR historical record |
| 1975 · 6 Hours of Watkins Glen World Championship of Makes and SCCA Trans-Am Championship | 6 | 24 | 1. T | BMW Motorsport | Sam Posey · Brian Redman | BMW 3.0 CSL | — | 142 | WSPR historical record |
| 1974 · 6 Hours of Watkins Glen World Championship of Makes and SCCA Trans-Am Championship | 8 | 34 | 1. GT | Ted Trudon Porsche-Audi | Sam Posey · David Hobbs · Elliot Forbes-Robinson - DNP | Porsche Carrera RSR | — | 160 | WSPR historical record |
| 1973 · 1973 24 Hours of Le Mans | DNF | 6 | GTS 5.0 | North American Racing Team | Sam PoseySam Posey Milt Minter | Ferrari 365 GTB/4 | Ferrari 4.4L V12 | 254 | Wikipedia contributors · CC BY-SA 4.0 |
| 1973 · Watkins Glen 6 Hours | 14 | 8 | 6. GT | North American Racing Team | Sam Posey · François Migault | Ferrari 365 GTB/4 | — | 160 | WSPR historical record |
| 1972 · 1972 24 Hours of Le Mans | 6 | 74 (reserve) | GTS 5.0 | North American Racing Team | Sam Posey · Tony AdamowiczSam Posey Tony Adamowicz | Ferrari 365 GTB/4 | Ferrari 4.4L V12 | 304 | Wikipedia contributors · CC BY-SA 4.0 |
| 1972 · Watkins Glen 6 Hours | retired | 21 | GT+2.5 | North American Racing Team | Sam Posey · David Hobbs | Ferrari 365 GTB/4 | — | 117 | WSPR historical record |
| 1972 · Daytona 6 Hours | retired | 22 | GT+2.5 | North American Racing Team | Sam Posey · Ronnie Bucknum · Luigi Chinetti, Jr. | Ferrari 365 GT | — | 119 | WSPR historical record |
| 1972 · Sebring 12 Hours | 13 | 21 | 3. GT+2.5 | North American Racing Team | Tony Adamowicz · Sam Posey | Ferrari 365 GTB/4 | — | 199 | WSPR historical record |
| 1971 · 1971 24 Hours of Le Mans | 3 | 12 | S 5.0 | North American Racing Team | Sam Posey · Tony AdamowiczSam Posey Tony Adamowicz | Ferrari 512 M | Ferrari 5.0L V12 | 366 | Wikipedia contributors · CC BY-SA 4.0 |
| 1971 · Buenos Aires 1000 Kilometres | 8 | 22 | 6. S | North American Racing Team | Sam Posey · Nestor Garcia-Veiga · Luis di Palma | Ferrari 512S Spyder | — | 148 | WSPR historical record |
| 1971 · Watkins Glen 6 Hours | retired | 14 | S | North American Racing Team | Sam Posey · Ronnie Bucknum | Ferrari 512M | — | 126 | WSPR historical record |
| 1971 · 24 h Daytona Beach | retired | 22 | S | North American Racing Team | Peter Revson · Sam Posey · Chuck Parsons · Luigi Chinetti, Jr. | Ferrari 512M | — | 202 | WSPR historical record |
| 1971 · Sebring 12 Hours | 37 | 23 | S | North American Racing Team | Ronnie Bucknum · Sam Posey | Ferrari 512S | — | 114 | WSPR historical record |
| 1970 · 1970 24 Hours of Le Mans | 4 | 11 | S 5.0 | North American Racing Team | Ronnie Bucknum · Sam PoseyRonnie Bucknum Sam Posey | Ferrari 512 S | Ferrari 5.0L V12 | 313 | Wikipedia contributors · CC BY-SA 4.0 |
| 1970 · 1970 24 Hours of Le Mans | DNS | 39 | P 3.0 | North American Racing Team | Sam PoseyTony Adamowicz Sam Posey | Ferrari 312P Coupé | Ferrari 3.0L V12 | | Wikipedia contributors · CC BY-SA 4.0 |
| 1970 · 24 h Daytona Beach | 4 | 24 | 1. P | North American Racing Team | Sam Posey · Mike Parkes | Ferrari 312P Coupé | — | 647 | WSPR historical record |
| 1970 · Sebring 12 Hours | 42 | 24 | S5.0 | North American Racing Team | Sam Posey · Ronnie Bucknum · Bert Everett | Ferrari 512S Spyder | — | 92 | WSPR historical record |
| 1969 · 1969 24 Hours of Le Mans | DNS | 16 | S 5.0 | North American Racing Team | Sam PoseySam Posey Bob Grossman | Ferrari 365 GTB/4 Daytona | Ferrari 4.4L V12 | | Wikipedia contributors · CC BY-SA 4.0 |
| 1969 · 1969 24 Hours of Le Mans | 8 | 17 | S 5.0 | North American Racing Team | Sam PoseyTeodoro Zeccoli Sam Posey | Ferrari 275LM | Ferrari 3.3L V12 | 329 | Wikipedia contributors · CC BY-SA 4.0 |
| 1969 · 24 h Daytona | 23 | 41 | 1. GT5.0 | North American Racing Team | Sam Posey · Riccardo Rodriguez | Ferrari 275 GTB/C | — | 494 | WSPR historical record |
| 1969 · 12 h Sebring | 36 | 38 | 0. P2.0 | North American Racing Team | Sam Posey · Bob Dini · DNS - Riccardo Rodriguez | Ferrari Dino 206S | — | 166 | WSPR historical record |
| 1968 · 24 h Daytona | 21 | 78 | 5. TA+2.0 | — | Sam Posey · Jim Kauffman | Ford Mustang | — | 523 | WSPR historical record |
| 1968 · Sebring 12 Hours | 63 | 34 | TA5.0 | Mathews Racing Team | Sam Posey · Milt Minter | Ford Mustang | — | 16 | WSPR historical record |
| 1967 · 24 h Daytona | retired | 82 | T2.0 | Harry Theodoracopulos | Harry Theodoracopulos · Sam Posey · Jim Haynes | Alfa Romeo GTA Junior | — | 69 | WSPR historical record |
| 1966 · 1966 24 Hours of Le Mans | DSQ | 11 | P +5.0 | Prototipi Bizzarrini | Sam Posey · Massimo NatiliSam Posey Massimo Natili | Bizzarrini P538 Super America | Chevrolet 5.4L V8 | 39 | Wikipedia contributors · CC BY-SA 4.0 |
| 1966 · 24 h Daytona | 11 | 20 | 4. S2.0 | Sam Posey | Sam Posey · Jim Haynes · Harry Theodoracopulos | Porsche 904 GTS | — | 577 | WSPR historical record |
| 1966 · 12 h Sebring | 57 | 64 | S1.6 | Filippo Theodoli | Sam Posey · Harry Theodoracopulos - DND | Alfa Romeo Giulia TZ2 | — | 16 | WSPR historical record |