Riverside 5 Hours 1980 - Racing Sports Cars

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Event: Los Angeles Times/Toyota Grand Prix of Endurance		Date: 27.4.1980
Track: Riverside International Raceway (United States), 5.311 kms	Organiser: unknown
Riverside 5 Hours
IMSA GT Series (round 4) FIA World Challenge for Endurance Drivers (round 4) IMSA GTO (round 4) IMSA GTU (round 4) International Motor Sport Association (round 4)

Weather:	warm, dry
Start time:	13:00
Grid:	unknown
Distance:	5 hours
Attendance:	unknown

Entered:	83
Practiced:	72
Qualified:	60
Started:	60
Finished:	30

Classes:	Pract	Start
IMSA GTX	26	19
IMSA GTO	21	19
IMSA GTU	25	22

Photo Gallery Entered Cars Technical Data Appearance Race Results Grid Qualifying Heat

Pre-race sessions:
non-qualifying practice held on 24/4
qualifying held on 25/4
60 minute pre-race warm-up held
10 lap qualifying race for positions 41 and above held (called Toyota Pro-Celebrity Race)

Winners:
Overall:	6	Porsche 935 K3	Fitzpatrick / Barbour
IMSA GTO:	54	Porsche Carrera RSR	Garcia / Herman
IMSA GTU:	47	Mazda RX-7	Frisselle / Katayama
Fastest Laps:
Overall:	6	Porsche 935 K3	John Fitzpatrick (GB)	1:41.230	188.868 km/h	lap 3
IMSA GTO:	10	Chevrolet Camaro	Bob Raub (USA)	1:54.570	166.876 km/h	lap 4
IMSA GTU:	83	Datsun 280ZX	Don Devendorf (USA)	1:55.620	165.360 km/h	lap 4
Pole Positions:
Overall:	91	Porsche 935 K3	Don Whittington (USA)		192.545 km/h
IMSA GTO:	48	Chevrolet Corvette	Phil Currin (USA)		168.963 km/h
IMSA GTU:	7	Mazda RX-7	Walt Bohren (USA)		167.650 km/h
Notes of interest:
Top makes by numbers:	Porsche (33), Mazda (7), Datsun (7), Chevrolet (7), BMW (2)
Top engines by numbers:	Porsche (32), Chevrolet (8), Mazda (7), Datsun (7), Ferrari (2)
Top car types by numbers:	Porsche 935 (13), Porsche 911 (8), Porsche 911 Carrera RSR (7), Mazda RX-7 (7)
Driver nationalities:	USA (116), J (4), DR (2), GB (2)
Most used colours:	white (31%), red (22%), yellow (15%), blue (8%), black (7%), orange (6%)
Engine positions:	rear-engined (50%), front-engined (38%), mid-engined (12%)
Oldest known drivers:	Preston Henn (49), George Follmer (46), Jim Cook (43)
Youngest known drivers:	Bobby Rahal (27), Geoff Brabham (28), Takashi Yorino (30)
Woman drivers:	Claudia LaCava, Margie Smith-Haas

Official Race Programme:

Cover	Entry List	Schedule	Track Map

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