Can you guys tell me the correct way to bleed air out of the cooling system on a 90 model? Can anybody tell me where the air bleeds are? Thanks for any info!

 

If you have a purge valve it should be on the thermostat housing.

 

I will just fill the radiator up, put some down the upper radiator hose, and then start the car with the cap off. Wait until the engine reaches normal operating temperature, filling the radiator as necessary.

 

I had an Admiral Blue 94 that I always thought ran too hot. I changed thermostat and there were two different bleeder valves for the cooling system. Both were up front by the thermostat. I just filled it and ran it till it warmed up, opened each valve seperately until it flowed solid and stopped spitting air bubbles, then go back and make sure recovery tank is full. It still ran too hot but it helped to run the AC as it kicked on the cooling fans quicker. It would run 195 down the interstate and 200 to 205 in the city.At stop light it would easily climb to 215 to 220. Chevy dealer said it was ok, I think they were full of crap, Just TOO HOT.

 

vetterz06,

I'm with you but LT1s are built to run that hot. That's why the cooling fans don't kick on until the thing looks like it is about to overheat. It drives me crazy.