Radiator Coolant Fans
A '95 Camaro/Trans Am Radiator
coolant fans will fit into a C3 with a little work. I used a hack saw to trim
off areas of the fan to clear the upper control arms and sway bar. It will
take a few trial runs until you get it right. To mount the Fans I sandwiched the
top portion of the plastic fan assembly between a 1/4" thick x 3/4"
wide aluminum strip and 1/8" x 1" angle iron on top. The angle iron
then mounts to the top radiator support. The purpose for the aluminum is to give
support to the the plastic frame the fans are mounted to. I drilled and tapped
the aluminum to attach the angle iron easier. I used the existing lower mounts
originally used to attached the fan shroud to mount the bottom of the plastic
fan frame. The '95 Camaro relays operate the fans. GM uses 3 relays which
work together to turn on one fan under normal conditions or both fans when
either the temperature of the engine reaches 220 degrees or the A/C is turned
on. I wired the coil wires of the relays to a thermal switch located in the
cylinder head. When the engine reaches 200 degrees, the thermal switch grounds
the coil wires of
the relays, which turns the fans on. You can buy after market relays and thermal
switches through Mid America, Eckler's, Jeg's, or Summit. The thermal
switch will only fit '84 thru '96 Corvette or Camaro/Trams Am with aluminum
cylinder heads. You should use two separate relays for each fan. Below is
a very simple wiring diagram to operate two fans without using a PCM to control
them.
Click on diagram to make bigger