[Jack21]

Sounds like you went through with cooling systems like what I went through with front suspensions and brakes.

Since Cobras are so notorious for running hot, or overheating, I paid special attention to the cooling system.

The Griffin aluminum radiator is specially made by Griffin for CR and is (was) only available from CR. By know, Don and/or DV should have them. Rad also comes with new rad/frame/hood brackets.

Can use 180 deg thermostat year round. It's a Honeywell high flow unit available from Summit. There are several aluminum high volume water pumps available from Edelbrock, Wyand, Stewarts (Summit again). I used the Edelbrock. And it needed clearancing for the SFI front crank balancer, and PS pump. Rebuilt auto supply store water pump won't cut it with a Cobra.

Using March pulley set. It does look pretty, but mostly you take it out of the box, bolt it onto the motor and it fits, and works. A rareity with Cobra builds! What most don't know unless speaking with March sales/tech support, is that two pulley ratios are available; a HiPo ratio, and a Street Rod ratio. The Street Rod ratio uses a smaller diameter water pump pulley which spins the water pump a little faster at street, and stuck-in-traffic RPM.

For a lower radiator hose, I used 3 ea., 1 3/4" hose elbows, a 4", and a 11" piece of 1 3/4" stainless exhaust tubing.

As built with 180 deg thermostat and fan sender, at highway cruise, the water temp climbs to 180 and stabilizes, the fan never comes on. Around town, the temp climbs to 205 when the fan turns on, cools to 180 where the fan turns off, and continues to cycle. A fan override switch on the dash which leaves the fan on regardless of coolant temperature adds an extra margin of safety (more for the drivers benefit, than the engine).