I was going to replaced my Thermostat today and notice or I don't see
a bleeder to let air out of the system like the LT-1 had.

Or how do you get air out of the system.

Also how much coolent you take out before it make a mess in the garage.

 

there isn't.....you can drain enough off thru the drain **** to get the level down far enough....unbolt the stock stat and insert new one....refill and allow engine to cycle T-stat to open....add as necessary watching the overflow tank...probably need to cycle 3-4 times.....I have this write up on the old server...just can't get it now...


FWIW you can just loosen bolts on stat and it will drain without to much mess but I don't reccomend it.....its not that bad but it will require some mopping

this is an easy mod

 

Thanks for the info. I know I saw some were on the forum how to do it and been looking for it the past 2 days. Now I know I was not nuts Thanks again.

 

Heres my write up I did for a friend of mine...NOTE this also refers to using the DEXCOOL 50/50 they sell...if using straight DEXCOOL follow regular instructions

Flush procedure:

Run engine till thermostat opens

Stop engine

Follow the drain and fill procedure using only clean drinkable water, repeat if necessary until fluid is nearly colorless. Refer to drain and fill procedure. Fill cooling system. See drain and fill procedure.


Drain and fill procedure:

Make sure engine is cool, remove radiator fill cap

Open radiator drain ****

Allow to drain completely

Close drain ****.

Fill system thru surge tank opening

********Fill half the system with 100% Dex Cool

********Add clean water till it reaches the base of the neck.

Start engine and idle for 1 minute

Replace surge tank cap

Cycle engine RPM from idle to 3000 in 30 second intervals until coolant temp reaches 99 degrees

Shut off engine

Remove surge tank cap

Start engine

Idle for 1 minute and fill surge tank to ½ inch ABOVE Full Cold mark on tank

Install surge cap

Cycle engine again idle to 3000 RPM in 30 second intervals until temp reaches 99 degrees

Shut off engine

Top off coolant as necessary ½ inch ABOVE FULL COLD mark on tank


******************************Since you are using the 50/50 mix just fill it all the way

 

I change my stat twice a year. spring 160f stat....and fall stat 190f..
I takes less than five minutes to replace the stat.... I loose less than a pint of coolant... Ive done this ten times without any issues... no air and no other problems... The car is cold and there are no problems with heated coolant...
It's slide up the radiator hose clamp..
remove the radiator hose and tuck it under the heater hose
the stat is close (Cold Engine) so you will lose no water,
take one housing bolt out of the housing.. put some anti sieze on it...
Have the new housing and stat with the O ring greased in place.

Now press the stat towards the engine with one hand and remove the other housing bolt with the other..
grab the newe stat and with one motion remove the old stat and put on the new one applying pressure towards the engine block.. this is the only time you will lose any coolant.. the eachgange takes ten seconds.... now grab the bolt that you applied th anti sieze too and put it in and tighten it alittle.. this will hold the stat in place. put some anti sieze onthe other bolt . torque to spec and replace the hose and the clamp... run engine check coolant level..