
After many years of searching for trucks, history and information, we have
understandably been barraged with lots of theory, a considerable amount of fiction,
and some core fact. Even the best intentions can often lead you astray, but alas,
we have completed the paperwork trail that definitively gives us the history of the 4
RS700L's used as the Rubber Duck's truck in various scenes of the movie. Our
thanks to the Bruhn family and Mack Trucks Historical Museum for their help and
hard work. With the documents to prove it, the trucks are:
Truck 1 - 1977 Mack RS712LST35492
Truck 2 - 1973 Mack RS797LST13182
Truck 3 - 1970 Mack RS731LST6646
Truck 4 - 1970 Mack RS731LST6648
Truck 1 - Used for the bulk of the shots and movie promos, this truck was ordered
on 2/2/77 by Mack Corporate's Marketing Division on behalf of EMI Films
specifically for use in Convoy. The appearance of this truck was designed by EMI's
Art Department to capitalize on a number of themes, but most notably the public's
universal acceptance of the legendary toughness of the Mack truck brand. The
truck was equipped as follows:
-Mack 315 bhp inline 6 turbo charged "Tip Turbine" ETAZ673A engine, S/N 7A2214
-Fuller RT-1110 10 speed transmission S/N 50067515
-Mack Front Axle FAW536C 10500# rating with Ross Power Steering
-Mack 34K Rear Axles on Mack Camelback Suspension w/55" Axle Spacing
-Factory 224" wheelbase
The truck was shipped from the factory with the rear cut-out for a sleeper, but the
Able Body 60" sleeper and air deflector were installed after the truck left the factory
by the studio shops. The truck left the factory on 3/18/77 and was driven to Los
Angeles. After filming, the truck was a total wreck and was sent back to Mack
through its Los Angeles factory sales and service branch. The cab and hood were
replaced with a new day cab and hood, along with most all of the the other exterior
cosmetic features. The truck was sold on 9/8/78 to Les H. and made into a truck
and pup transfer dump. The truck still survives in its revised form today, although
subsequent owners have added dual exhaust, Peterbilt Air Leaf suspension and
numerous other changes. The truck has appeared on eBay and in truck sales
papers several times over the past few years.
Truck 2 - The 1973 Mack was purchased from the truck's second owner, B&E Inc.
of Hobbs, NM on 4/22/77 by EMI Films. The original motor would have been a
Mack ENDT866 375bhp V8 turbo charged engine. This truck, along with Truck 4
were gutted during filming and used as pull-props and stunt victims. Things like
doors, windows and other items were taken off to allow for in-cab scenes to be
shot. You'll notice this truck in particular on close-up shots as the black paint is
worn off of the door window sills near the rear of the door. This truck was
destroyed by the various modifications during filming and sold to Bruhn Enterprises
after filming for scrap value of $1,750.
Truck 3 and Truck 4 - The identical 1970 Mack RS731LST's were originally built
for and sold to Gillford Hill Portland Cement of Dallas, TX. EMI Films purchased
these two Macks, along with Widow's Brockway, from New Mexico Mack Sales, Inc.
of Albuquerque, NM on 4/28/77.
From the factory, these two 1970 Macks had Cummins NH230 Inline 6 diesel
engines. At some point between 1970 and 1977, Truck 3 was repowered with a
Cummins NTC335 turbo charged inline 6 diesel engine. During filming, Truck 4
was gutted and used as the ultimate stunt victim, taking a plunge into the shallow
Colorado river.
Truck 3, Truck 4 and the Brockway were all purchased by Bruhn Enterprises after
filming. Truck 3 was made into a concrete transit mixer and wrecked near Logan,
NM in 1986. This is the truck that we purchased and combined with several other
parts trucks to restore as you see on this website. Truck 4 was bought for scrap
value by Bruhn Enterprises and disposed of in the early 1980's.
Rubber Duck's Mack RS700L's
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