How to Install a Corvette Radiator

Chevrolet Corvettes are manufactured with a pressurized coolant system that uses a finned radiator core to stabilize the engine temperature. This radiator is typically made from aluminum and copper, and can corrode quickly, requiring replacement. Newer model Corvettes use the same procedure as older models, but have a tighter engine compartment. The average backyard mechanic can replace a Corvette radiator in about two hours.

Instructions

1

Drain the coolant by turning the radiator petcock in a counterclockwise direction, then allowing the coolant to drain into the pan. Relieve the pressure on the radiator by uncapping it at the top coolant fill opening. The petcock is on the lower passenger side of most Corvette radiators, but in early models, the lower radiator hose must be disconnected as there is no petcock.

2

Disconnect the lower and upper radiator hoses by pinching their hose clamp tabs together and working them off of the radiator nipples. Some models will have screw-type hose clamps, which can be disengaged by turning their screws counterclockwise. Allow the coolant to drain into the pan. The hoses can remain in place.

3

Remove the electric fan and fan shroud, if applicable, by turning the corner bolts counterclockwise. Unplug the fan at the adapter plug by pulling it apart after depressing the locking tab on it's side. Mechanical fan models will only require the shroud be disconnected and left leaning against the engine without attempting to work it out of the engine bay. It only needs to be out of the way, not entirely removed.

4

Disconnect any transmission cooling lines from twin-core radiators with a line wrench, turning the line bolts in a counterclockwise direction. Allow the fluid to drain into the pan.

5

Remove the top mount plate bolts by turning them counterclockwise, then remove the mount plate, if applicable.

6

Slide the radiator towards the top of the engine compartment and away from the car.

7

Replace the radiator with a new unit, and slide it back into position using the guide channels, if applicable.

8

Replace the mount plate and secure the top mount bolts by turning them clockwise.

9

Attach the fan shroud or complete fan assembly by turning the corner bolts clockwise into their original mounts.

10

Connect the transmission lines by turning the line bolts clockwise.

11

Restore the upper and lower cooling hoses by working them back onto the radiator nipples, then pinching or screwing their hose clamps tightly.

12

Turn the petcock clockwise, if applicable.

13

Refill the system with the proper mixture of coolant and water. For most models of Corvette this is 50 percent water to 50 percent coolant, for any coolant type.

14

Crank the Corvette and continue to pour the coolant mixture into the radiator until it does not take in any more. Check the reservoir tank often for low coolant levels as the air is worked out of the system.