Description:

Aluminum honeycomb-tubbed sister car to the Formula One Williams
that was Makes Champion in 1980. The car was run by Al Unser Sr. at
Indy in 1981. It also ran in the Can-Am single seat racing
series. It was rebuilt for club racing and ran in the SCCA, winning
a west coast divisional championship and setting a lap record at Laguna.
It is a full ground effects car and has the original body in
non-period livery.

History

The FW07 was Patrick Head's first ground effects design and after a late
introduction in 1979 was dominant in 1980, taking the championship.
Bobby Hillin Sr. built this car for Al
Unser Sr. for the 1981 500 Indy race. It was built by Longhorn
in Midland, Texas from plans and components supplied by Williams.
Bobby Hillin Sr. supplied the money. The owner has seen 2 other
Formula One Williams FW-07s and the tub and body work are the same. These are
hand built cars, so each one is a little different, but a lot of the parts
will interchange. The big difference in the Indy car to the F-1 seems to be
the 15" wheels required at Indy as compared to the 13" wheels that were in use
at that time in F-1. Also, the suspension rockers are at different angles to
allow for the different height of the wheels. The plans
which accompany the car are from Williams in England. Not a complete set, but pretty extensive.
Ed Zink did a lot of the detail work on many sets of additional Longhorn drawings.


Competition History

in storage since 1992

Engine

• small block Chevy
  
• dynoed at 565hp
  
• Brodix alum heads
  
• stainless steel valves
  
• S.S. roller rocker arms
  
• stud girdle
  
• roller cam with rev kit
  
• 4 bolt main caps with ARP stud kit
  
• torque plate honed on Sunnen
  
• align honed main
  
• decked
  
• balanced
  
• MSD ignition box with rev limiter
  
• rebuilt 3 stage dry sump pump
  
• 2 muffler systems (life in the 1990's)
  
• The triple-plate clutch has just 2 races on it
  

Fuel System

• fuel cell
  

Oil/Water System

• complete aeroquipped plumbing systems
  
• water and oil rads in sidepods
  

Electrical System

• rewired in 1988
  

Body

• original bodywork
  
• full ground effects underwings
  

Chassis

• honeycomb aluminum monocoque
  
• tbd
  
• rocker
  
• rocker
  
• rack
  
• vented rotors, all hydraulic systems were rebuilt in 1992
  
• Dymag
  

Interior

• fire suppression system (halon)
  
• front and rear cockpit adjustable swaybars
  
• cockpit adjustable brake bias
  
• gauges with alarm lites on dash
  

Spares
Spares in underlined color are pictured. Click on the description to view the photo.