Overheating 360 GLT

I have a '87 360 GLT that overheats on long journeys if the fan is not
blowing hot air at you. I have flushed out the radiator and changed
the thermostat neither of which did any good. Im prepared to live with
it like this because i mostly drive around town, but Ive read that the
engine running hot might be a sign of head gasket failure. Is this
likely to happen if i dont get it looked at?

Ed

 

I would have said a failed viscous fan coupling, but it would tend to
overheat in town when air speed is low rather than on a run.

Sounds like poor circulation usually caused by a blocked radiator though.
Feel over the rad when the engine is hot and see if there are any cool
areas. if so, then its still blocked.

Tim..

 

" Tim (Remove NOSPAM. Registry corupted, reformated HD and lost alot of

Definately doubt it, it barely needed unless towing or standing still.

The 360 is pretty fault tolerant and doesn't usually overheat even when the
radiator is half full unless you are attempting top speed on the motorway.
If it was the head gasket you would be losing water suddenly or there would
be alot of steam (thats why it runs hot).

Check circulation by spinning the pump by hand with the top hose off. Other
odd causes are slipped timing belt, loose drive belts, broken water pump
veins. Silt in radiator is common but you should have noticed alot of brown
water when you flushed it. If it was clean then no need to worry.