Over heating Pontiac 400

Old 11-05-2009, 11:26 AM
  #1  
chipper1644
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Default Over heating Pontiac 400

I have a over heating pontiac 400. I've went to a aluminum rad. Electric water pump electric fan flushed block removed water drains to make sure its not clogged. 10 to 1 compression, 525 lift cam 280 duration dont know whats left to do. runs up in the 230's.
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Old 11-05-2009, 11:32 AM
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DirkaDirka
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Does it have a thermostat in it? If so it may be staying closed. What I would do is take it out and run it to see if it over heats again.

Also are you sure that the water pump is turning? Or is it turning the right direction?
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Old 11-05-2009, 05:03 PM
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TheYellaBrick
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How many miles on the engine ?
How long to get that high of temps ?
230 while motating down the road or in traffic ?
Done a coolant system pressure check ? Could be a leaking head gasket.
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Old 11-07-2009, 06:06 AM
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oldandtired
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What's your timing set at?
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Old 11-07-2009, 03:05 PM
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TS1955
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Also are you sure that the water pump is turning? Or is it turning the right direction?[/quote]

Possible have the pump wired backwards?

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