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Event: Los Angeles Times/Toyota Grand Prix of Endurance RiversideDate: 26.4.1981
Track: Riverside International Raceway (United States), 5.311 kmsOrganiser: unknown

Riverside 6 Hours
Weather:warm, dry
Start time:unknown
Grid:2-2-2, PP left
Distance:6 hours
Attendance:unknown
Entered:76
Practiced:69
Qualified:65
Started:58
Finished:32
Classes:PractStart
IMSA GTX2420
IMSA GTU2319
IMSA GTO2219
Photo GalleryEntered CarsTechnical DataAppearanceRace ResultsGridQualifyingQualifying HeatLap Times
Pre-race sessions:
2 non-qualifying practice sessions held on 23-24/4
1 qualifying session held for a total of 75 minutes on 24/4
qualifying race for positions 41-60
Winners:
Overall:1Porsche 935 K3/80Fitzpatrick / Busby
IMSA GTU:25BMW M1Miller / Cowart
IMSA GTO:23Datsun 280ZXCarney / Davenport
Fastest Laps:
Overall:8Porsche 935 JLP-3John Paul, Jr. (USA)1:40.7100189.8414 km/hlap 178
IMSA GTU:25BMW M1Kenper Miller (USA)1:50.7000172.7100 km/hlap 3
IMSA GTO:82Mazda RX-7Jim Cook (USA)1:55.8400165.0463 km/hlap 30
Pole Positions:
Overall:8Porsche 935 JLP-3John Paul, Jr. (USA)194.9125 km/h
IMSA GTU:25BMW M1Dave Cowart (USA)175.8530 km/h
IMSA GTO:98Mazda RX-7Lee Mueller (USA)166.7747 km/h
Notes of interest:
Top makes by numbers:Porsche (30), Mazda (8), BMW (7), Chevrolet (4), Datsun (4)
Top engines by numbers:Porsche (29), BMW (8), Mazda (8), Chevrolet (4), Datsun (4)
Top car types by numbers:Porsche 935 (14), Mazda RX-7 (8), Porsche 911 Carrera (8)
Driver nationalities:USA (113), GB (4), CDN (4), D (4), ES (3)
Most used colours:white (34%), red (20%), blue (16%), yellow (11%), black (6%), silver (4%)
Engine positions:rear-engined (46%), front-engined (32%), mid-engined (22%)
Oldest known drivers:Paul Newman (56), Preston Henn (50), Jim Cook (44)
Youngest known drivers:John Paul, Jr. (21), Ted Field (28), Bobby Rahal (28)
Female drivers:Karen Erstad, Divina Galica, Claudia LaCava, Kathy Rude

Official Race Programme:

CoverEntry ListScheduleTrack Map
Programme Cover - Riverside 6 Hours 1981Entry list is not available.Schedule of events is not available.Track map is not available.