For 1973, further changes were made to 028.

The ugly modified body was discarded in favour of a new soft nose 1972-type Group 7 Spyder shell. A full five-litre normally aspirated engine was fitted and the white car was given a blue noseband and centre stripe.

Vasek Polak ran 028 for Steve Durst in 1973 whose best result was fifth in his first outing with the car at Mosport. However, unhappy with the old Porsche, Durst later switched to a McLaren M8F run by Motschenbacher Racing.

Before the end of the 1973 Can-Am season, Vasek Polak gave chassis 028 its final revamp.

Polak fitted a turbocharged engine and the full shovel nose bodywork that normally accompanied the forced induction engine.

Polak contracted Brian Redman to drive the plain white car in the last two races of 1973, but Redman failed to finish on either occasion.

In later years chassis 028 joined the Collier collection in Florida, since which time it has been restored to 1969 trim.

Notable History

Porsche (Porsche-Audi)

17/08/1969 CAM Mid-Ohio (J. Siffert) 4th oa (#0)
31/08/1969 CAM Road America (J. Siffert) DNF (#0)
14/09/1969 CAM Bridgehampton (J. Siffert) 3rd oa (#0)
28/09/1969 CAM Michigan (J. Siffert) 4th oa (#0)
12/10/1969 CAM Laguna Seca (J. Siffert) 5th oa (#0)
26/10/1969 CAM Riverside (J. Siffert) DNF (#0)
09/11/1969 CAM Texas (J. Siffert) 4th oa (#0)

Sold to Vasek Polak (Vasek Polak Racing Inc.), Hermos Beach, California

4.9-litre engine fitted

13/06/1971 CAM Mosport (M. Minter) DNS (#0)
27/06/1971 CAM St. Jovite (M. Minter) 8th oa (#0)
11/07/1971 CAM Road Atlanta (M. Minter) 5th oa (#0)
25/07/1971 CAM Watkins Glen (M. Minter) unused (#0)
22/08/1971 CAM Mid-Ohio (M. Minter) 6th oa (#0)
29/08/1971 CAM Road America (M. Minter) DNS (#0)
12/09/1971 CAM Donnybrooke (M. Minter) 7th oa (#0)
26/09/1971 CAM Edmonton (M. Minter) 5th oa (#0)
17/10/1971 CAM Laguna Seca (M. Minter) 9th oa (#0)
31/10/1971 CAM Riverside (M. Minter) 6th oa (#0)
28/11/1971 USC Road Atlanta (M. Minter) DNF (#10)

4.5-litre turbocharged engine fitted

15/10/1972 CAM Laguna Seca (S. Posey) 5th oa (#20)
29/10/1972 CAM Riverside (S. Posey) DNF gearbox (#20)

5-litre engine fitted

10/06/1973 CAM Mosport (S. Durst) 5th oa (#3)
08/07/1973 CAM Road Atlanta (S. Durst) 7th oa (#3)
22/07/1973 CAM Watkins Glen (S. Durst) 7th oa (#3)
12/08/1973 CAM Mid-Ohio (S. Durst) 10th oa (#3)
26/08/1973 CAM Road America (S. Durst) DNS (#3)

917-10 body and turbocharged engine fitted

14/10/1973 CAM Laguna Seca (B. Redman) DNF (#3)
28/10/1973 CAM Riverside (B, Redman) DNF (#3)

Later sold to the Collier Collection, Naples, Florida

Text copyright: Supercar Nostalgia
Photo copyright: Supercar Nostalgia & Porsche – https://www.porsche.com