1983 - Portland 3 Hours

31 July 1983 - Portland International Raceway, USA

Wayne Baker & Jim Mullen highest placed Porsche 5th in a Porsche 934

GTO - 3rd : GTU - 2nd

No.	Car	#	Class	Drivers	Entrant	Pos	Class	Grid	Notes
9	Porsche 934	009 00030	GTO	Wayne Baker (USA)/Jim Mullen (USA)	Wayne Baker Racing (USA)	5th	3rd	11th	141 laps
79	Porsche 924 Carrera GTR	WP0ZZZ93ZBS720006	GTU	Tom Winters (USA)/Bob Bergstrom (USA)	Whitehall/Promotion (USA)	7th	2nd	17th	138 laps
64	Porsche 911 Carrera		GTO	Parke Duff (USA)/John Gilson		13th	4th	34th	128 laps
31	Porsche 911 Carrera RSR		GTO	Tom Alan Marx (USA)/Bill Follmer (USA)	Marx-Lanfre Racing (USA)	14th	5th	33rd	128 laps
51	Porsche 911		GTU	Nick Feodorhoff (USA)/Bernie Neumann (CDN)	Performance Unlimited (USA)	16th	8th	36th	127 laps
54	Porsche 911 Carrera RSR		GTO	David Schroeder (USA)/Karl Durkheimer (USA)	Karl Durkheimer (USA)	18th	6th	16th	120 laps
30	Porsche 935/81	JR-001	GTP	Gianpiero Moretti (I)/Sarel van der Merwe (ZA)	Momo/Kreepy Krauly (I)	22nd	6th	8th	96 laps - DNF
08	Porsche 911 Carrera		GTO	Gary Auberlen (USA)/Peter Jauker (USA)		23rd	8th	35th	90 laps
81	Porsche 911		GTU	Gary Nylander (USA)/Don Bell (USA)	Apex Systems	26th	11th	32nd	69 laps - DNF
69	Porsche 911 Carrera		GTO	Terry Herman (USA)	Davin Motorsports	30th	10th	19th	61 laps - DNF
66	Porsche 914/6	914 143 0332	GTU	Will Swope (USA)/Scott Taylor (USA)		36th	12th	29th	26 laps - DNF