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Pontiacs are fairly notorious for running at higher temps. There are a few things you can do. First, make sure your cooling system is in good shape. Use an aftermarket high flow water pump and a 4 core radiator. If you don't have one, install a good fan shroud and a factory 7 blade fan with a temp/rpm sensitive fan clutch. Most flex fans are useless when it comes to cooling the engine....especially a daily driven Pontiac. Been there, done that. Also invest in the best thermostat you can find. The better (and higher priced) ones open closer to their advertised temp. There are anti-freeze performance additives that are supposed to help them cool better, but I've never used them and can't attest to whether or not they work.

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Q: How can you get your 1968 Pontiac firebird 400 motor to run below 190 degrees?
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