Photo: Mecca of Speed
Patrick Hogan of Littleton, Colorado has a fascinating
collection of vintage race cars that were originally owned by Roger Penske and
driven by championship racer, Mark Donohue. Among these are a ’67 Lola T70
Spyder, and the 1969 Sunoco Camaro Z28 that won many a victory at such
prestigious circuits as Watkins Glen and Laguna Seca.
The Penske-Sunoco Z28 is a very
hard car to miss, as decals from both sponsors are brightly-colored and adorn
the car throughout. The story behind this original Trans-Am racing piece is
that it took first place at Michigan International, Bridgehampton, Bryar
Motorsports Park, Mont-Tremblant, Watkins Glen, Laguna Seca, Sears Point and
Riverside during the 1969 racing season. Mark Donohue and the Penske Camaro Z28
won six out of twelve races to win for the Camaro a manufacturers’
Several modifications had to be made to the Camaro before it
became the championship Trans-Am racer that made the Camaro nameplate into a
road-racing legend. The most predominant of these was the acid-dipping process
in which the Z28 undertook before being delivered to Roger Penske. Acid-dipping
on race car bodies was a common practice for the time, and the purpose of
dipping a car body in acid was to lower overall mass while maintaining the
car’s strength and rigidity.
Photo: Mecca of Speed
Other track-oriented modifications to the Z28 included air
channels built-into the doors for increased airflow to the rear brakes,
quick-release brake pads and a custom-lube system in which oil could be added
to the engine once it reached racing temperatures. All of these modifications
are primitive, or so they seem, but the Penske team was the only one at that
time who was using them, which allowed Penske to be more competitive than any
other racing team at Trans-Am, winning more professional races at an
After the finish of the 1969 season, the Camaro was sent
over to Jim Hall of Chaparral, who used the Z28 as a template for the design of
the Camaro that would be raced during the 1970 Trans Am series. Roger Penske
eventually sold that car to Roy Woods, who had driver Milt Minter drive the car
to a victory in 1970 at the “Donnybrooke” race.
A championship, Trans Am racer with cutting-edge innovations
for the time, the Penske-Sunoco Z28 is one of America’s most significant pieces
of Trans Am racing history.
by Salvatore Alaimo
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