LT1-LT4 Modifications 1993-97 Gen II Small Block V8

new motor,coolant overflowing??

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Old 11-12-2010, 02:12 PM
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Default new motor,coolant overflowing??

i just put a new motor in my 93 trans am and i was running and staying cool.i took it for a ride and it started to get hot so i went back home 3 min away.it is pushing all the cooant from the radiator into the over flow tank and over flowing out of the tank.Is it possible that i didnt get all the air out? any suggestion appreciated
Old 11-12-2010, 02:33 PM
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i think it needs to be bled more like you said it probably still has air in it or it created an air pocket while you were driving.

what shape was the radiator in? why did you replace the motor? do you know what shape the thermostat is in?
Old 11-12-2010, 03:15 PM
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Check and make sure you didn't get the lines on the passenger side of the radiator mixed up.on runs to the overflow and the other the crossover for the heads. Seen it done before.
Old 11-12-2010, 03:36 PM
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Radiator cap?
Old 11-12-2010, 04:12 PM
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leon was right that was why it was over flowing i figured that out just before i got back on here,it is still getting hot so i let it cool all the way off and now im going to try to bleed the air out again.previous motor ran flawless but when i went to put a hotcam in it i found that my cam bearings were worn so i pulled the motor and rebuilt it and had heads freshened up.
Old 11-12-2010, 04:16 PM
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Sweet. Easy fix. Ha. Now just get it bled and drive it.
Old 11-12-2010, 06:15 PM
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i got it to stop over heating but my fans dont shut off so when i start driving the temp goes way down any ideas guys?thanks for the help on the last one i just cant wait to get everything ironed out so when spring time comes i can beat the hell out of it lol




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